關(guān)于java的paint()方法

呵呵 這個(gè)源沒其實(shí)是很簡單的，你在GUI中要捕捉鍵盤的輸入就雹亮納應(yīng)該增加一個(gè)鍵盤的監(jiān)聽器。

public void addKeyListener(KeyListener l)利用這個(gè)方鍵巧法捕捉。

import java.awt.*;

import javax.swing.*;

public class Test extends JFrame implements addKeyListener {

int sign = 0;

public static void main(String[] args){

Test sl = new Test();

}

Test(){

addKeyListener(this);

...

}

public void paint(Graphics g) { //這里就要分情況繪制了

if(sign == 0){

}else if(sign == 1){}

}

void keyPressed(KeyEvent e)

{

if(e.getKeyCode() == KeyEvent.VK_0){

sign = 0;

repaint();

}else if(e.getKeyCode() == KeyEvent.VK_0){

sign = 1;

repaint();

}

}

void keyReleased(KeyEvent e) {}

void keyTyped(KeyEvent e) {}

}