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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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@ -0,0 +1,8 @@
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|||
# Default ignored files
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||||
/shelf/
|
||||
/workspace.xml
|
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# Editor-based HTTP Client requests
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||||
/httpRequests/
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# Datasource local storage ignored files
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/dataSources/
|
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/dataSources.local.xml
|
||||
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@ -0,0 +1,6 @@
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<?xml version="1.0" encoding="UTF-8"?>
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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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@ -0,0 +1,8 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="ProjectModuleManager">
|
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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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<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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</group>
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</project>
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|
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@ -0,0 +1,6 @@
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|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
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||||
<component name="VcsDirectoryMappings">
|
||||
<mapping directory="$PROJECT_DIR$" vcs="Git" />
|
||||
</component>
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||||
</project>
|
||||
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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||||
}
|
||||
|
||||
public static double average(short[] row) {
|
||||
short sum = 0;
|
||||
|
||||
for (short element : row) {
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||||
sum += element;
|
||||
}
|
||||
|
||||
double result = sum / row.length;
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||||
|
||||
return result;
|
||||
}
|
||||
|
||||
public static void main(String[] args) {
|
||||
short a, rows = 0, columns = 0, width;
|
||||
String format;
|
||||
|
||||
Scanner input = new Scanner(System.in);
|
||||
|
||||
do {
|
||||
try {
|
||||
System.out.println();
|
||||
System.out.print("Input a constant to multipy a matrix by: ");
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||||
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||||
a = input.nextShort();
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||||
break;
|
||||
} catch (Exception e) {
|
||||
System.out.println("A constant must be a short-data type integer, try again.");
|
||||
input.nextLine();
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||||
}
|
||||
} while (true);
|
||||
|
||||
System.out.println();
|
||||
System.out.println("Input size of the matrix.");
|
||||
|
||||
do {
|
||||
try {
|
||||
System.out.print("Rows: ");
|
||||
rows = input.nextShort();
|
||||
} catch (Exception e) {
|
||||
System.out.println("A number of rows must be a short-data type integer, try again.");
|
||||
input.nextLine();
|
||||
}
|
||||
} while (rows <= 0);
|
||||
|
||||
do {
|
||||
try {
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System.out.print("Columns: ");
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||||
columns = input.nextShort();
|
||||
} catch (Exception e) {
|
||||
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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||||
}
|
||||
} while (columns <= 0);
|
||||
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||||
short[][] matrix_B = new short[rows][columns];
|
||||
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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);
|
||||
|
||||
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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System.out.println("|");
|
||||
}
|
||||
|
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System.out.println();
|
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System.out.println("Matrix a×B:");
|
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|
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format = format(rows * columns * a);
|
||||
|
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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) (a);
|
||||
|
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System.out.printf(format, matrix_B[i][j]);
|
||||
}
|
||||
|
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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();
|
||||
}
|
||||
}
|
||||
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@ -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