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- mainFrame.java
- import java.awt.*;
- import java.awt.event.KeyEvent;
- import java.awt.event.KeyListener;
- import javax.swing.JFrame;
- public class mainFrame extends JFrame implements KeyListener{
- private mainDraw draw;
- public void keyPressed(KeyEvent e) {
- System.out.println("keyPressed");
- }
- public void keyReleased(KeyEvent e) {
- if(e.getKeyCode()== KeyEvent.VK_RIGHT)
- draw.moveRight();
- else if(e.getKeyCode()== KeyEvent.VK_LEFT)
- draw.moveLeft();
- else if(e.getKeyCode()== KeyEvent.VK_DOWN)
- draw.moveDown();
- else if(e.getKeyCode()== KeyEvent.VK_UP)
- draw.moveUp();
- }
- public void keyTyped(KeyEvent e) {
- System.out.println("keyTyped");
- }
- public mainFrame(){
- this.draw=new mainDraw();
- addKeyListener(this);
- setFocusable(true);
- setFocusTraversalKeysEnabled(false);
- }
- public static void main(String[] args) {
- javax.swing.SwingUtilities.invokeLater(new Runnable() {
- public void run() {
- mainFrame frame = new mainFrame();
- frame.setTitle("Square Move Practice");
- frame.setResizable(false);
- frame.setSize(600, 600);
- frame.setMinimumSize(new Dimension(600, 600));
- frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
- frame.getContentPane().add(frame.draw);
- frame.pack();
- frame.setVisible(true);
- }
- });
- }
- }
- //////
- import java.awt.Color;
- import java.awt.Graphics;
- import javax.swing.JComponent;
- public class mainDraw extends JComponent {
- public int x = 50;
- public int y = 50;
- public void paintComponent(Graphics g) {
- super.paintComponent(g);
- g.drawRect(x, y, 50, 50);
- g.fillRect(x, y, 50, 50);
- g.setColor(Color.BLACK);
- }
- public void moveRight() {
- x = x + 5;
- repaint();
- }
- public void moveLeft() {
- x = x - 5;
- repaint();
- }
- public void moveDown() {
- y = y + 5;
- repaint();
- }
- public void moveUp() {
- y = y - 5;
- repaint();
- }
- }
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