为什么我在调试或运行时看到的是空白屏幕而不是黑色?我到处都看过,也做了很多尝试!请帮忙。我只是想让我的屏幕变黑,因为我是所有这些 java 编码的初学者。我不认为代码有任何问题,因为我没有收到任何错误。我正在使用 Eclipse。
package com.techon.rain;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferStrategy;
import javax.swing.JFrame;
public class Game extends Canvas implements Runnable {
private static final long serialVersionUID = 1L;
public static int width =300;
public static int height = width / 16 * 9;
public static int scale =3;
private JFrame frame;
private Thread thread;
private boolean running = false;
public Game() {
Dimension size = new Dimension(width*scale, height*scale);
setPreferredSize(size);
frame = new JFrame();
}
public synchronized void start() {
running = true;
thread = new Thread(this, "Display");
thread.start();
}
public synchronized void stop() {
running = false;
try {
thread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public void run() {
while(running);{
update();
render();
}
}
public void update() {
}
public void render() {
BufferStrategy bs = getBufferStrategy();
if(bs == null) {
createBufferStrategy(3);
return;
}
Graphics g = bs.getDrawGraphics();
g.setColor(Color.BLACK);
g.fillRect(0,0,getWidth(),getHeight());
g.dispose();
bs.show();
}
public static void main(String[] args) {
Game game = new Game();
game.frame.setResizable(false);
game.frame.setTitle("Rain");
game.frame.add(game);
game.frame.pack();
game.frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
game.frame.setLocationRelativeTo(null);
game.frame.setVisible(true);
game.start();
}
}
最佳答案
替换
public void run() {
while(running);{
update();
render();
}
由
public void run() {
while(running){
update();
render();
}
由于 while(running);它没有在循环内执行其他语句。
关于java - JFrame Java setColor 和 fillRect 保持空白?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/21366919/