Java8 Programming Examples

Arithmetic Demo

java8

public class ArithmeticDemo {
    public static void main(String[] args) {
        
        int x=13;
        int y=5;
        int z=x+y;
        
        /*
        Here are some variable declarations.
        Each int is initialized with a value.
        This comment is pointless lmao it's
        just an example of this type of comment xD
        */
        
        //display sum, difference, product,
        //quotient, and remainder.
        System.out.println(z);
        System.out.println(x+y);
        System.out.println(x-y);
        System.out.println(x*y);
        System.out.println(x/y);
        System.out.println(x%y);
        
        System.out.println("abc" + "xyz");
        int sum = x+y;
        System.out.println(x + " plus " + y + " is " + sum);
    }
}

Arithmetic

java8

public class ArithmeticDemo {
    public static void main(String[ ] args) {
        
        int x = 13;
        int y = 5;
       
       // display sum, difference, product, quotient, and remainder.
       
        System.out.println(x + y);
        System.out.println(x - y);
        System.out.println(x * y);
        System.out.println(x / y);
        System.out.println(x % y);
        
        System.out.println("abc");
        System.out.println(2.3/8.76);
        //Different functions of println.
    }    
}

Compile and Execute Java8 Online

java8

import java.util.*;
public class HelloWorld
{
    public static void main(String []args)
    {
        Scanner scan = new Scanner(System.in);
        System.out.println("Enter the values of a and s");
        int a = scan.nextInt();
        String s = scan.next();
        System.out.printf("%15s%d",s,a);
    }
}

Compile and Execute Java8 Online

java8

public class HelloWorld{

     public static void main(String []args){
        System.out.println("Hello World");
     }
}

Assigment 2

java8

public class HelloWorld{

     public static void main(String []args){
        System.out.println("Hello World");
     }
}

Assignment 2 CSN_103 OOPS

java8

public class HelloWorld{

     public static void main(String []args){
        System.out.println("Hello World");
     }
}

SnakeTheBestGAmeIn tge wirkd

java8

package com.zetcode;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.ImageIcon;
import javax.swing.JPanel;
import javax.swing.Timer;

public class Board extends JPanel implements ActionListener {

    private final int B_WIDTH = 300;
    private final int B_HEIGHT = 300;
    private final int DOT_SIZE = 10;
    private final int ALL_DOTS = 900;
    private final int RAND_POS = 29;
    private final int DELAY = 140;

    private final int x[] = new int[ALL_DOTS];
    private final int y[] = new int[ALL_DOTS];

    private int dots;
    private int apple_x;
    private int apple_y;

    private boolean leftDirection = false;
    private boolean rightDirection = true;
    private boolean upDirection = false;
    private boolean downDirection = false;
    private boolean inGame = true;

    private Timer timer;
    private Image ball;
    private Image apple;
    private Image head;

    public Board() {

        addKeyListener(new TAdapter());
        setBackground(Color.black);
        setFocusable(true);

        setPreferredSize(new Dimension(B_WIDTH, B_HEIGHT));
        loadImages();
        initGame();
    }

    private void loadImages() {

        ImageIcon iid = new ImageIcon("dot.png");
        ball = iid.getImage();

        ImageIcon iia = new ImageIcon("apple.png");
        apple = iia.getImage();

        ImageIcon iih = new ImageIcon("head.png");
        head = iih.getImage();
    }

    private void initGame() {

        dots = 3;

        for (int z = 0; z < dots; z++) {
            x[z] = 50 - z * 10;
            y[z] = 50;
        }

        locateApple();

        timer = new Timer(DELAY, this);
        timer.start();
    }

    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);

        doDrawing(g);
    }
    
    private void doDrawing(Graphics g) {
        
        if (inGame) {

            g.drawImage(apple, apple_x, apple_y, this);

            for (int z = 0; z < dots; z++) {
                if (z == 0) {
                    g.drawImage(head, x[z], y[z], this);
                } else {
                    g.drawImage(ball, x[z], y[z], this);
                }
            }

            Toolkit.getDefaultToolkit().sync();

        } else {

            gameOver(g);
        }        
    }

    private void gameOver(Graphics g) {
        
        String msg = "Game Over";
        Font small = new Font("Helvetica", Font.BOLD, 14);
        FontMetrics metr = getFontMetrics(small);

        g.setColor(Color.white);
        g.setFont(small);
        g.drawString(msg, (B_WIDTH - metr.stringWidth(msg)) / 2, B_HEIGHT / 2);
    }

    private void checkApple() {

        if ((x[0] == apple_x) && (y[0] == apple_y)) {

            dots++;
            locateApple();
        }
    }

    private void move() {

        for (int z = dots; z > 0; z--) {
            x[z] = x[(z - 1)];
            y[z] = y[(z - 1)];
        }

        if (leftDirection) {
            x[0] -= DOT_SIZE;
        }

        if (rightDirection) {
            x[0] += DOT_SIZE;
        }

        if (upDirection) {
            y[0] -= DOT_SIZE;
        }

        if (downDirection) {
            y[0] += DOT_SIZE;
        }
    }

    private void checkCollision() {

        for (int z = dots; z > 0; z--) {

            if ((z > 4) && (x[0] == x[z]) && (y[0] == y[z])) {
                inGame = false;
            }
        }

        if (y[0] >= B_HEIGHT) {
            inGame = false;
        }

        if (y[0] < 0) {
            inGame = false;
        }

        if (x[0] >= B_WIDTH) {
            inGame = false;
        }

        if (x[0] < 0) {
            inGame = false;
        }
        
        if(!inGame) {
            timer.stop();
        }
    }

    private void locateApple() {

        int r = (int) (Math.random() * RAND_POS);
        apple_x = ((r * DOT_SIZE));

        r = (int) (Math.random() * RAND_POS);
        apple_y = ((r * DOT_SIZE));
    }

    @Override
    public void actionPerformed(ActionEvent e) {

        if (inGame) {

            checkApple();
            checkCollision();
            move();
        }

        repaint();
    }

    private class TAdapter extends KeyAdapter {

        @Override
        public void keyPressed(KeyEvent e) {

            int key = e.getKeyCode();

            if ((key == KeyEvent.VK_LEFT) && (!rightDirection)) {
                leftDirection = true;
                upDirection = false;
                downDirection = false;
            }

            if ((key == KeyEvent.VK_RIGHT) && (!leftDirection)) {
                rightDirection = true;
                upDirection = false;
                downDirection = false;
            }

            if ((key == KeyEvent.VK_UP) && (!downDirection)) {
                upDirection = true;
                rightDirection = false;
                leftDirection = false;
            }

            if ((key == KeyEvent.VK_DOWN) && (!upDirection)) {
                downDirection = true;
                rightDirection = false;
                leftDirection = false;
            }
        }
    }
}

Compile and Execute Java8 Online

java8

public class HelloWorld{

     public static void main(String []args){
        System.out.println("Hello World");
     }
}

Compile and Execute Java8 Online

java8

public class HelloWorld{

     public static void main(String []args){
        System.out.println("Hello World");
     }
}

testsadigvcbxkjkl<sgubjavdfhn

java8

public class HelloWorld{

     public static void main(String []args){
         
         boolean t = false;
         
         if(t){
             System.out.println("false");
         }else{
             System.out.println("true");
         }
         
         
     }
}

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