我只能看到一空的框 什么都没有 why?代码还是从csdn上来的呢!import java.awt.*;public class Test extends Frame{
Graphics g; Test() {
this.setSize(400, 400);
this.setVisible(true);
g = this.getGraphics();
// g.drawLine(50,50,50,50);
paint(g); } public void paint(Graphics g) {
g.drawLine(50, 50, 50, 50);
} public static void main(String args[]) {
new Test();
}}
Graphics g; Test() {
this.setSize(400, 400);
this.setVisible(true);
g = this.getGraphics();
// g.drawLine(50,50,50,50);
paint(g); } public void paint(Graphics g) {
g.drawLine(50, 50, 50, 50);
} public static void main(String args[]) {
new Test();
}}
哎呀 我的神啊
这不是什么都没有是
g.drawLine(50, 50, 50, 50); //在 (50,50)这个地方有个点 你没看到
用这个代替
g.drawLine(50, 50, 100, 100); //从(50,50 )到 (100,100) 画线