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80de92fa1e
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# Project exclude paths
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/out/
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||||||
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# Default ignored files
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||||||
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/shelf/
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||||||
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/workspace.xml
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# Editor-based HTTP Client requests
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||||||
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/httpRequests/
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||||||
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# Datasource local storage ignored files
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||||||
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/dataSources/
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||||||
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/dataSources.local.xml
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||||||
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||||||
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<?xml version="1.0" encoding="UTF-8"?>
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||||||
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<project version="4">
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||||||
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<component name="ProjectRootManager" version="2" languageLevel="JDK_18" default="true" project-jdk-name="openjdk-18" project-jdk-type="JavaSDK">
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||||||
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<output url="file://$PROJECT_DIR$/out" />
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||||||
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</component>
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||||||
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</project>
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||||||
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||||||
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<?xml version="1.0" encoding="UTF-8"?>
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||||||
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<project version="4">
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||||||
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<component name="ProjectModuleManager">
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||||||
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<modules>
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||||||
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<module fileurl="file://$PROJECT_DIR$/OOP_IO-2x_2023.iml" filepath="$PROJECT_DIR$/OOP_IO-2x_2023.iml" />
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||||||
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</modules>
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||||||
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</component>
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||||||
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</project>
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||||||
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||||||
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<?xml version="1.0" encoding="UTF-8"?>
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||||||
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<project version="4">
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||||||
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<component name="Palette2">
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||||||
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<group name="Swing">
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||||||
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<item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
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||||||
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<default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
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||||||
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||||||
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||||||
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||||||
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||||||
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||||||
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||||||
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<initial-values>
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<property name="text" value="Button" />
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||||||
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||||||
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<item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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||||||
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<default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
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||||||
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<initial-values>
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||||||
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<property name="text" value="RadioButton" />
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||||||
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</initial-values>
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||||||
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<item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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||||||
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<default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
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||||||
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<initial-values>
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<property name="text" value="CheckBox" />
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||||||
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</initial-values>
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</item>
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<item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.svg" removable="false" auto-create-binding="false" can-attach-label="false">
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<default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
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<initial-values>
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<property name="text" value="Label" />
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</initial-values>
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</item>
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<item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
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<preferred-size width="150" height="-1" />
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</default-constraints>
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
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<preferred-size width="150" height="-1" />
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</default-constraints>
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</item>
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<item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
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||||||
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<preferred-size width="150" height="-1" />
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||||||
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</default-constraints>
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||||||
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</item>
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<item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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||||||
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<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
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||||||
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<preferred-size width="150" height="50" />
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</default-constraints>
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<item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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||||||
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<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
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||||||
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<preferred-size width="150" height="50" />
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||||||
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</default-constraints>
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||||||
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</item>
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||||||
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<item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
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||||||
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<preferred-size width="150" height="50" />
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</default-constraints>
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||||||
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</item>
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||||||
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<item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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<default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
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</item>
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||||||
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<item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
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||||||
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<preferred-size width="150" height="50" />
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||||||
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</default-constraints>
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||||||
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</item>
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<item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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||||||
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<default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
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||||||
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<preferred-size width="150" height="50" />
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||||||
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</default-constraints>
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</item>
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<item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
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||||||
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<preferred-size width="150" height="50" />
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</default-constraints>
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</item>
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<item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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<default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
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||||||
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<preferred-size width="200" height="200" />
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||||||
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<item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.svg" removable="false" auto-create-binding="false" can-attach-label="false">
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||||||
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<default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
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||||||
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<preferred-size width="200" height="200" />
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||||||
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</default-constraints>
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||||||
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</item>
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||||||
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<item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
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||||||
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</item>
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<item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
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</item>
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<item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
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<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
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</item>
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<item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
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||||||
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</item>
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||||||
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<item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
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||||||
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
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||||||
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<preferred-size width="-1" height="20" />
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</default-constraints>
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||||||
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</item>
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||||||
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<item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
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||||||
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<default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
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||||||
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</item>
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||||||
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<item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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||||||
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<default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
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||||||
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</item>
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||||||
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</group>
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||||||
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</component>
|
||||||
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</project>
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||||||
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@ -0,0 +1,6 @@
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||||||
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<?xml version="1.0" encoding="UTF-8"?>
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||||||
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<project version="4">
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||||||
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<component name="VcsDirectoryMappings">
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||||||
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<mapping directory="$PROJECT_DIR$" vcs="Git" />
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||||||
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</component>
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||||||
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</project>
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||||||
108
Lab 2/Lab_2.java
108
Lab 2/Lab_2.java
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@ -1,108 +0,0 @@
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import java.util.Scanner;
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import java.util.Arrays;
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||||||
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public class Lab_2 {
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||||||
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||||||
public static String format(int number) {
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int width = String.valueOf(number).length() + 1;
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String format = "|%" + width + "d ";
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||||||
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return format;
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||||||
}
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||||||
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public static double average(short[] row) {
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short sum = 0;
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for (short element : row) {
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sum += element;
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||||||
}
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||||||
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double result = sum / row.length;
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return result;
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||||||
}
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||||||
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public static void main(String[] args) {
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short a, rows = 0, columns = 0, width;
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String format;
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Scanner input = new Scanner(System.in);
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do {
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try {
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System.out.println();
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System.out.print("Input a constant to multipy a matrix by: ");
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a = input.nextShort();
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break;
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} catch (Exception e) {
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System.out.println("A constant must be a short-data type integer, try again.");
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input.nextLine();
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}
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||||||
} while (true);
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System.out.println();
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System.out.println("Input size of the matrix.");
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do {
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try {
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System.out.print("Rows: ");
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rows = input.nextShort();
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} catch (Exception e) {
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||||||
System.out.println("A number of rows must be a short-data type integer, try again.");
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input.nextLine();
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}
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||||||
} while (rows <= 0);
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||||||
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do {
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||||||
try {
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System.out.print("Columns: ");
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columns = input.nextShort();
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} catch (Exception e) {
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||||||
System.out.println("A number of columns must be a short-data type integer, try again.");
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||||||
input.nextLine();
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||||||
}
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||||||
} while (columns <= 0);
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||||||
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||||||
short[][] matrix_B = new short[rows][columns];
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||||||
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|
||||||
System.out.println();
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|
||||||
System.out.println("Matrix B:");
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||||||
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format = format(rows * columns);
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||||||
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|
||||||
for (short i = 0; i < rows; i++) {
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||||||
for (short j = 0; j < columns; j++) {
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||||||
matrix_B[i][j] = (short) ((i + 1) * (j + 1));
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|
||||||
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|
||||||
System.out.printf(format, matrix_B[i][j]);
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|
||||||
}
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|
||||||
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|
||||||
System.out.println("|");
|
|
||||||
}
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|
||||||
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|
||||||
System.out.println();
|
|
||||||
System.out.println("Matrix a×B:");
|
|
||||||
|
|
||||||
format = format(rows * columns * a);
|
|
||||||
|
|
||||||
for (short i = 0; i < rows; i++) {
|
|
||||||
for (short j = 0; j < columns; j++) {
|
|
||||||
matrix_B[i][j] *= (short) (a);
|
|
||||||
|
|
||||||
System.out.printf(format, matrix_B[i][j]);
|
|
||||||
}
|
|
||||||
|
|
||||||
System.out.println("|");
|
|
||||||
}
|
|
||||||
|
|
||||||
System.out.println();
|
|
||||||
System.out.println("Averages of each row:");
|
|
||||||
|
|
||||||
for (short[] row : matrix_B) {
|
|
||||||
System.out.println(average(row));
|
|
||||||
}
|
|
||||||
|
|
||||||
input.close();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
@ -0,0 +1,11 @@
|
||||||
|
<?xml version="1.0" encoding="UTF-8"?>
|
||||||
|
<module type="JAVA_MODULE" version="4">
|
||||||
|
<component name="NewModuleRootManager" inherit-compiler-output="true">
|
||||||
|
<exclude-output />
|
||||||
|
<content url="file://$MODULE_DIR$">
|
||||||
|
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
|
||||||
|
</content>
|
||||||
|
<orderEntry type="inheritedJdk" />
|
||||||
|
<orderEntry type="sourceFolder" forTests="false" />
|
||||||
|
</component>
|
||||||
|
</module>
|
||||||
|
|
@ -0,0 +1,58 @@
|
||||||
|
public class Lab1 {
|
||||||
|
public static void main(String[] args) {
|
||||||
|
// char c = 'a' + '1';
|
||||||
|
char c = 97;
|
||||||
|
// char c = '1';
|
||||||
|
System.out.println(c);
|
||||||
|
System.out.println((int) c);
|
||||||
|
c++;
|
||||||
|
System.out.println(c);
|
||||||
|
System.out.println((int) c);
|
||||||
|
System.out.println((double)'1'/'3');
|
||||||
|
|
||||||
|
// System.out.println( (double) 0 / 0 );
|
||||||
|
// System.out.println( Math.sqrt(-1) );
|
||||||
|
double s = 0;
|
||||||
|
/*for (int i = 1; i <= 3; i++) { // 1) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> i = 1, 2) <EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <= 3, 3) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 䳿 <EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,
|
||||||
|
System.out.println(i); // 4) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD> 1, 5) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 2
|
||||||
|
// s = s + i;
|
||||||
|
s += i;
|
||||||
|
}*/
|
||||||
|
/*int[] array = new int[2];
|
||||||
|
for (int i = 0; i < array.length; i++) {
|
||||||
|
|
||||||
|
}*/
|
||||||
|
final int A = -3;
|
||||||
|
final int B = 0;
|
||||||
|
final int N = 2;
|
||||||
|
final int M = 2;
|
||||||
|
|
||||||
|
final int C = 1;
|
||||||
|
// boolean wasDivisionByZero = false;
|
||||||
|
// todo char
|
||||||
|
// todo[clear code] think about avoiding brackets
|
||||||
|
if ((A <= -C && -C <= N) || (B <= 0 && 0 <= M)) {
|
||||||
|
System.out.println("Division by zero!");
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
/*myLabel:*/for (int i = A; i <= N /*&& !wasDivisionByZero*/; i++) {
|
||||||
|
/*if (i + C == 0) { // todo optimize
|
||||||
|
System.out.println("Division by zero!");
|
||||||
|
wasDivisionByZero = true;
|
||||||
|
break; //todo flag vs return;
|
||||||
|
}*/
|
||||||
|
for (int j = B; j <= M; j++) {
|
||||||
|
/*if (j == 0) {
|
||||||
|
System.out.println("Division by zero!");
|
||||||
|
return;
|
||||||
|
// wasDivisionByZero = true;
|
||||||
|
// break myLabel;
|
||||||
|
}*/
|
||||||
|
s += (double) (i / j) / (i + C);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
// if (!wasDivisionByZero) {
|
||||||
|
System.out.println("s = " + s);
|
||||||
|
// }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,26 @@
|
||||||
|
public class Lab2 {
|
||||||
|
public static void main(String[] args) {
|
||||||
|
int[] array = {1, 2, 3};
|
||||||
|
/*for (int i = 0; i < array.length; i++) {
|
||||||
|
if (i % 2 == 0) {
|
||||||
|
System.out.println("!" + array[i]);
|
||||||
|
} else {
|
||||||
|
System.out.println("?" + array[i]);
|
||||||
|
}
|
||||||
|
}*/
|
||||||
|
|
||||||
|
for (int i = 0; i < array.length; i+=2) {
|
||||||
|
System.out.println("!" + array[i]);
|
||||||
|
}
|
||||||
|
|
||||||
|
for (int i = 1; i < array.length; i+=2) {
|
||||||
|
System.out.println("?" + array[i]);
|
||||||
|
}
|
||||||
|
|
||||||
|
// зубчасті матриці
|
||||||
|
int[][] matrix = {
|
||||||
|
{1, 2},
|
||||||
|
{3}
|
||||||
|
};
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,42 @@
|
||||||
|
public class Main {
|
||||||
|
public static void main(String[] args) {
|
||||||
|
System.out.println(args[2]);
|
||||||
|
System.out.println("Hello world!");
|
||||||
|
// System.out.println(1);
|
||||||
|
|
||||||
|
int a = 1;
|
||||||
|
int b = 2;
|
||||||
|
int c = 1;
|
||||||
|
int d = 1;
|
||||||
|
|
||||||
|
System.out.println(2&1);
|
||||||
|
System.out.println(2|1);
|
||||||
|
int aa = 2;
|
||||||
|
|
||||||
|
/*if (aa) {
|
||||||
|
|
||||||
|
}*/
|
||||||
|
|
||||||
|
// System.out.println("a"&"b");
|
||||||
|
System.out.println('a'&'b');
|
||||||
|
|
||||||
|
if ((a > b) & MyBooleanMethod()) {
|
||||||
|
System.out.println("?????????????????????????");
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
static boolean MyBooleanMethod() {
|
||||||
|
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
void myFunction() {
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
int myFunction2() {
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,20 @@
|
||||||
|
package encapsulationInheritancePolymorphism;
|
||||||
|
|
||||||
|
public class Encapsulation {
|
||||||
|
/*private*/ int field;
|
||||||
|
private int field2;
|
||||||
|
// int a = 1;
|
||||||
|
|
||||||
|
public void myMethodForTheField () {
|
||||||
|
System.out.println(field);
|
||||||
|
}
|
||||||
|
|
||||||
|
public void myMethodForTheField2 () {
|
||||||
|
System.out.println(field);
|
||||||
|
}
|
||||||
|
|
||||||
|
public void myMethodForTheFieldAndTheField2 () {
|
||||||
|
System.out.println(field);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
@ -0,0 +1,10 @@
|
||||||
|
package encapsulationInheritancePolymorphism;
|
||||||
|
|
||||||
|
public class EncapsulationInheritancePolymorphism {
|
||||||
|
|
||||||
|
public static void main(String[] args) {
|
||||||
|
int a = 1;
|
||||||
|
// var b = 2;
|
||||||
|
// System.out.println(b);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,14 @@
|
||||||
|
package encapsulationInheritancePolymorphism;
|
||||||
|
|
||||||
|
public class Main {
|
||||||
|
public static void main(String[] args) {
|
||||||
|
Student student = new Student();
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
//...
|
||||||
|
|
||||||
|
student.setFaculty("FPM", "MO-22");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,18 @@
|
||||||
|
package encapsulationInheritancePolymorphism;
|
||||||
|
|
||||||
|
public class Student {
|
||||||
|
private String name;
|
||||||
|
private String surname;
|
||||||
|
private String group;
|
||||||
|
private String faculty;
|
||||||
|
|
||||||
|
|
||||||
|
public String getName() {
|
||||||
|
return name;
|
||||||
|
}
|
||||||
|
|
||||||
|
public void setFaculty(String faculty, String group) {
|
||||||
|
this.faculty = faculty;
|
||||||
|
this.group = group;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,9 @@
|
||||||
|
package encapsulationInheritancePolymorphism.inheritance;
|
||||||
|
|
||||||
|
public class ElectricEngine extends Engine {
|
||||||
|
private String batteryType;
|
||||||
|
|
||||||
|
/*private class Engine {
|
||||||
|
private int power;
|
||||||
|
}*/
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,5 @@
|
||||||
|
package encapsulationInheritancePolymorphism.inheritance;
|
||||||
|
|
||||||
|
public class Engine {
|
||||||
|
private int power;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,5 @@
|
||||||
|
package encapsulationInheritancePolymorphism.inheritance;
|
||||||
|
|
||||||
|
public class FuelEngine extends Engine {
|
||||||
|
private String fuelType;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,8 @@
|
||||||
|
package encapsulationInheritancePolymorphism.inheritance;
|
||||||
|
|
||||||
|
public class Main {
|
||||||
|
public static void main(String[] args) {
|
||||||
|
ElectricEngine electricEngine = new ElectricEngine(); // створення нового об'єкту (екземпляру) класу ElectricEngine
|
||||||
|
FuelEngine fuelEngine = new FuelEngine();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,14 @@
|
||||||
|
package encapsulationInheritancePolymorphism.polymorphism;
|
||||||
|
|
||||||
|
public class ElectricEngine extends Engine {
|
||||||
|
private String batteryType;
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public int getPower() {
|
||||||
|
return 20;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*private class Engine {
|
||||||
|
private int power;
|
||||||
|
}*/
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,9 @@
|
||||||
|
package encapsulationInheritancePolymorphism.polymorphism;
|
||||||
|
|
||||||
|
public class Engine {
|
||||||
|
private int power;
|
||||||
|
|
||||||
|
public int getPower() {
|
||||||
|
return power;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,10 @@
|
||||||
|
package encapsulationInheritancePolymorphism.polymorphism;
|
||||||
|
|
||||||
|
public class FuelEngine extends Engine {
|
||||||
|
private String fuelType;
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public int getPower() {
|
||||||
|
return 50;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,38 @@
|
||||||
|
package encapsulationInheritancePolymorphism.polymorphism;
|
||||||
|
|
||||||
|
/*import encapsulationInheritancePolymorphism.inheritance.ElectricEngine;
|
||||||
|
import encapsulationInheritancePolymorphism.inheritance.FuelEngine;*/
|
||||||
|
|
||||||
|
public class Main {
|
||||||
|
public static void main(String[] args) {
|
||||||
|
/*encapsulationInheritancePolymorphism.inheritance.*/ElectricEngine electricEngine = new ElectricEngine(); // створення нового об'єкту (екземпляру) класу ElectricEngine
|
||||||
|
/*encapsulationInheritancePolymorphism.inheritance.*/FuelEngine fuelEngine = new FuelEngine();
|
||||||
|
|
||||||
|
Engine engine1 = fuelEngine;
|
||||||
|
|
||||||
|
Engine[] engines = {
|
||||||
|
electricEngine,
|
||||||
|
fuelEngine
|
||||||
|
};
|
||||||
|
|
||||||
|
for (Engine engine : engines) {
|
||||||
|
System.out.println(engine.getPower());
|
||||||
|
}
|
||||||
|
|
||||||
|
/*for (int i = 0; i < engines.length; i++) {
|
||||||
|
System.out.println(engines[i].getPower());
|
||||||
|
}*/
|
||||||
|
|
||||||
|
// +
|
||||||
|
int a = 1;
|
||||||
|
int b = 1;
|
||||||
|
int c = a + b;
|
||||||
|
System.out.println(c);
|
||||||
|
|
||||||
|
|
||||||
|
String sA = "1";
|
||||||
|
String sB = "1";
|
||||||
|
String sC = sA + sB;
|
||||||
|
System.out.println(sC);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,19 @@
|
||||||
|
package encapsulationInheritancePolymorphism.polymorphism.enhanced;
|
||||||
|
|
||||||
|
public class ElectricEngine extends Engine {
|
||||||
|
private String batteryType;
|
||||||
|
private int chargeLevel = 9;
|
||||||
|
private int criticalChargeLevel = 10;
|
||||||
|
private float coefficientCriticalPowerCut = 0.1f;
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public int getPower() {
|
||||||
|
return chargeLevel > criticalChargeLevel
|
||||||
|
? super.getPower()
|
||||||
|
: (int) (super.getPower() * coefficientCriticalPowerCut);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*private class Engine {
|
||||||
|
private int power;
|
||||||
|
}*/
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,9 @@
|
||||||
|
package encapsulationInheritancePolymorphism.polymorphism.enhanced;
|
||||||
|
|
||||||
|
public class Engine {
|
||||||
|
private int power = 100;
|
||||||
|
|
||||||
|
public int getPower() {
|
||||||
|
return power;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,10 @@
|
||||||
|
package encapsulationInheritancePolymorphism.polymorphism.enhanced;
|
||||||
|
|
||||||
|
public class FuelEngine extends Engine {
|
||||||
|
private String fuelType;
|
||||||
|
|
||||||
|
/*public int getPower() {
|
||||||
|
return 50;
|
||||||
|
}*/
|
||||||
|
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,28 @@
|
||||||
|
package encapsulationInheritancePolymorphism.polymorphism.enhanced;
|
||||||
|
|
||||||
|
/*import encapsulationInheritancePolymorphism.inheritance.ElectricEngine;
|
||||||
|
import encapsulationInheritancePolymorphism.inheritance.FuelEngine;*/
|
||||||
|
|
||||||
|
public class Main {
|
||||||
|
public static void main(String[] args) {
|
||||||
|
/*encapsulationInheritancePolymorphism.inheritance.*/
|
||||||
|
ElectricEngine electricEngine = new ElectricEngine(); // створення нового об'єкту (екземпляру) класу ElectricEngine
|
||||||
|
/*encapsulationInheritancePolymorphism.inheritance.*/
|
||||||
|
FuelEngine fuelEngine = new FuelEngine();
|
||||||
|
|
||||||
|
Engine engine1 = fuelEngine;
|
||||||
|
|
||||||
|
Engine[] engines = {
|
||||||
|
electricEngine,
|
||||||
|
fuelEngine
|
||||||
|
};
|
||||||
|
|
||||||
|
for (Engine engine : engines) {
|
||||||
|
System.out.println(engine.getPower());
|
||||||
|
}
|
||||||
|
|
||||||
|
/*for (int i = 0; i < engines.length; i++) {
|
||||||
|
System.out.println(engines[i].getPower());
|
||||||
|
}*/
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,17 @@
|
||||||
|
package encapsulationInheritancePolymorphism.polymorphism.overload;
|
||||||
|
|
||||||
|
public class MyClassForOverloadExample {
|
||||||
|
void myMethod(int a) {
|
||||||
|
System.out.println("Integer: " + a);
|
||||||
|
}
|
||||||
|
|
||||||
|
void myMethod(double a) {
|
||||||
|
System.out.println("Double: " + a);
|
||||||
|
}
|
||||||
|
|
||||||
|
public static void main(String[] args) {
|
||||||
|
MyClassForOverloadExample overload = new MyClassForOverloadExample();
|
||||||
|
overload.myMethod(1);
|
||||||
|
overload.myMethod(0.1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,13 @@
|
||||||
|
package test;
|
||||||
|
|
||||||
|
public class A {
|
||||||
|
/*private*/ int f/* = 3*/;
|
||||||
|
|
||||||
|
public int getF() {
|
||||||
|
return f;
|
||||||
|
}
|
||||||
|
|
||||||
|
public void setF(int f) {
|
||||||
|
this.f = f;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,15 @@
|
||||||
|
package test;
|
||||||
|
|
||||||
|
public class Main {
|
||||||
|
public static void main(String[] args) {
|
||||||
|
A a = new A();
|
||||||
|
System.out.println(a.getF());
|
||||||
|
a.setF(1);
|
||||||
|
System.out.println(a.getF());
|
||||||
|
|
||||||
|
System.out.println(a.f);
|
||||||
|
|
||||||
|
int[] array = {1, 2, 1};
|
||||||
|
System.out.println(array.length);
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue