把九九乘法表放进图形用户界面java
用图形界面编写九九乘法表的Java程序如下:
import java.awt.Graphics;import javax.swing.JFrame;
public class BBD extends JFrame{
BBD(){
super("九九乘法表");
setSize(550, 300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setVisible(true);
}
public void paint(Graphics g){
super.paint(g);
g.drawString("九九乘法表", 50, 50);
for(int i=1;i<=9;i++)
for(int j=1;j<=i;j++){
String s=i+"*"+j+"="+(i*j);
g.drawString(s, j*50, i*20+80);
}
}
public static void main(String[] args) {
new BBD();
}
}
运行结果:
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