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@ -1,58 +0,0 @@
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public class Lab1 {
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public static void main(String[] args) {
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// char c = 'a' + '1';
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char c = 97;
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// char c = '1';
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System.out.println(c);
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System.out.println((int) c);
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c++;
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System.out.println(c);
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System.out.println((int) c);
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System.out.println((double)'1'/'3');
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// System.out.println( (double) 0 / 0 );
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// System.out.println( Math.sqrt(-1) );
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double s = 0;
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/*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>,
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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
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// s = s + i;
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s += i;
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}*/
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/*int[] array = new int[2];
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for (int i = 0; i < array.length; i++) {
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}*/
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final int A = -3;
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final int B = 0;
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final int N = 2;
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final int M = 2;
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final int C = 1;
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// boolean wasDivisionByZero = false;
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// todo char
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// todo[clear code] think about avoiding brackets
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if ((A <= -C && -C <= N) || (B <= 0 && 0 <= M)) {
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System.out.println("Division by zero!");
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return;
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}
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/*myLabel:*/for (int i = A; i <= N /*&& !wasDivisionByZero*/; i++) {
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/*if (i + C == 0) { // todo optimize
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System.out.println("Division by zero!");
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wasDivisionByZero = true;
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break; //todo flag vs return;
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}*/
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for (int j = B; j <= M; j++) {
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/*if (j == 0) {
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System.out.println("Division by zero!");
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return;
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// wasDivisionByZero = true;
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// break myLabel;
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}*/
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s += (double) (i / j) / (i + C);
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}
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}
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// if (!wasDivisionByZero) {
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System.out.println("s = " + s);
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// }
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}
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}
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public class Lab2 {
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public static void main(String[] args) {
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int[] array = {1, 2, 3};
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/*for (int i = 0; i < array.length; i++) {
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if (i % 2 == 0) {
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System.out.println("!" + array[i]);
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} else {
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System.out.println("?" + array[i]);
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}
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}*/
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for (int i = 0; i < array.length; i+=2) {
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System.out.println("!" + array[i]);
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}
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for (int i = 1; i < array.length; i+=2) {
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System.out.println("?" + array[i]);
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}
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// зубчасті матриці
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int[][] matrix = {
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{1, 2},
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{3}
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};
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}
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}
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public class Main {
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public static void main(String[] args) {
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System.out.println(args[2]);
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System.out.println("Hello world!");
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// System.out.println(1);
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int a = 1;
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int b = 2;
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int c = 1;
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int d = 1;
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System.out.println(2&1);
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System.out.println(2|1);
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int aa = 2;
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/*if (aa) {
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}*/
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// System.out.println("a"&"b");
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System.out.println('a'&'b');
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if ((a > b) & MyBooleanMethod()) {
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System.out.println("?????????????????????????");
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}
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}
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static boolean MyBooleanMethod() {
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System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
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return true;
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}
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void myFunction() {
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}
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int myFunction2() {
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return 1;
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}
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}
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package encapsulationInheritancePolymorphism;
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public class Encapsulation {
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/*private*/ int field;
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private int field2;
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// int a = 1;
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public void myMethodForTheField () {
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System.out.println(field);
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}
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public void myMethodForTheField2 () {
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System.out.println(field);
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}
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public void myMethodForTheFieldAndTheField2 () {
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System.out.println(field);
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}
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}
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package encapsulationInheritancePolymorphism;
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public class EncapsulationInheritancePolymorphism {
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public static void main(String[] args) {
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int a = 1;
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// var b = 2;
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// System.out.println(b);
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}
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}
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package encapsulationInheritancePolymorphism;
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public class Main {
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public static void main(String[] args) {
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Student student = new Student();
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//...
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student.setFaculty("FPM", "MO-22");
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}
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}
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package encapsulationInheritancePolymorphism;
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public class Student {
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private String name;
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private String surname;
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private String group;
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private String faculty;
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public String getName() {
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return name;
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}
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public void setFaculty(String faculty, String group) {
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this.faculty = faculty;
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this.group = group;
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}
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}
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package encapsulationInheritancePolymorphism.inheritance;
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public class ElectricEngine extends Engine {
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private String batteryType;
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/*private class Engine {
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private int power;
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}*/
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}
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package encapsulationInheritancePolymorphism.inheritance;
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public class Engine {
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private int power;
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}
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package encapsulationInheritancePolymorphism.inheritance;
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public class FuelEngine extends Engine {
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private String fuelType;
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}
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package encapsulationInheritancePolymorphism.inheritance;
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public class Main {
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public static void main(String[] args) {
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ElectricEngine electricEngine = new ElectricEngine(); // створення нового об'єкту (екземпляру) класу ElectricEngine
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FuelEngine fuelEngine = new FuelEngine();
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}
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}
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package encapsulationInheritancePolymorphism.polymorphism;
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public class ElectricEngine extends Engine {
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private String batteryType;
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@Override
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public int getPower() {
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return 20;
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}
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/*private class Engine {
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private int power;
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}*/
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}
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@ -1,9 +0,0 @@
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package encapsulationInheritancePolymorphism.polymorphism;
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public class Engine {
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private int power;
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public int getPower() {
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return power;
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}
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}
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package encapsulationInheritancePolymorphism.polymorphism;
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public class FuelEngine extends Engine {
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private String fuelType;
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@Override
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public int getPower() {
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return 50;
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}
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}
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package encapsulationInheritancePolymorphism.polymorphism;
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/*import encapsulationInheritancePolymorphism.inheritance.ElectricEngine;
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import encapsulationInheritancePolymorphism.inheritance.FuelEngine;*/
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public class Main {
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public static void main(String[] args) {
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/*encapsulationInheritancePolymorphism.inheritance.*/ElectricEngine electricEngine = new ElectricEngine(); // створення нового об'єкту (екземпляру) класу ElectricEngine
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/*encapsulationInheritancePolymorphism.inheritance.*/FuelEngine fuelEngine = new FuelEngine();
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Engine engine1 = fuelEngine;
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Engine[] engines = {
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electricEngine,
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fuelEngine
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};
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for (Engine engine : engines) {
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System.out.println(engine.getPower());
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}
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/*for (int i = 0; i < engines.length; i++) {
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System.out.println(engines[i].getPower());
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}*/
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// +
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int a = 1;
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int b = 1;
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int c = a + b;
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System.out.println(c);
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String sA = "1";
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String sB = "1";
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String sC = sA + sB;
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System.out.println(sC);
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}
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}
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package encapsulationInheritancePolymorphism.polymorphism.enhanced;
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public class ElectricEngine extends Engine {
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private String batteryType;
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private int chargeLevel = 9;
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private int criticalChargeLevel = 10;
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private float coefficientCriticalPowerCut = 0.1f;
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@Override
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public int getPower() {
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return chargeLevel > criticalChargeLevel
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? super.getPower()
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: (int) (super.getPower() * coefficientCriticalPowerCut);
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}
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/*private class Engine {
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private int power;
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}*/
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}
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package encapsulationInheritancePolymorphism.polymorphism.enhanced;
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public class Engine {
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private int power = 100;
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public int getPower() {
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return power;
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}
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}
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package encapsulationInheritancePolymorphism.polymorphism.enhanced;
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public class FuelEngine extends Engine {
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private String fuelType;
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/*public int getPower() {
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return 50;
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}*/
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}
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package encapsulationInheritancePolymorphism.polymorphism.enhanced;
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/*import encapsulationInheritancePolymorphism.inheritance.ElectricEngine;
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import encapsulationInheritancePolymorphism.inheritance.FuelEngine;*/
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public class Main {
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public static void main(String[] args) {
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/*encapsulationInheritancePolymorphism.inheritance.*/
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ElectricEngine electricEngine = new ElectricEngine(); // створення нового об'єкту (екземпляру) класу ElectricEngine
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/*encapsulationInheritancePolymorphism.inheritance.*/
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FuelEngine fuelEngine = new FuelEngine();
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Engine engine1 = fuelEngine;
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Engine[] engines = {
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electricEngine,
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fuelEngine
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};
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for (Engine engine : engines) {
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System.out.println(engine.getPower());
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}
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/*for (int i = 0; i < engines.length; i++) {
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System.out.println(engines[i].getPower());
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}*/
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}
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}
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package encapsulationInheritancePolymorphism.polymorphism.overload;
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public class MyClassForOverloadExample {
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void myMethod(int a) {
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System.out.println("Integer: " + a);
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}
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void myMethod(double a) {
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System.out.println("Double: " + a);
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}
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public static void main(String[] args) {
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MyClassForOverloadExample overload = new MyClassForOverloadExample();
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overload.myMethod(1);
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overload.myMethod(0.1);
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}
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}
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package test;
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public class A {
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/*private*/ int f/* = 3*/;
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public int getF() {
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return f;
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}
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public void setF(int f) {
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this.f = f;
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}
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}
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@ -1,15 +0,0 @@
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package test;
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public class Main {
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public static void main(String[] args) {
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A a = new A();
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System.out.println(a.getF());
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a.setF(1);
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System.out.println(a.getF());
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System.out.println(a.f);
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int[] array = {1, 2, 1};
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System.out.println(array.length);
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}
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}
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