name.java

用Java实现的模板可以在上面划各种矩形的源码 推荐

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class name{
	public static void main(String args[]){
		shapesframe sf=new shapesframe();
		sf.show();
	}
}
class shapesframe extends JFrame{
	public shapesframe(){
		setTitle("draws!");
		setSize(300,200);
		addWindowListener(new WindowAdapter(){
	public void windowClosing(WindowEvent e){
	System.exit(0);
	}
});
Container contentPane=getContentPane();
contentPane.add(new ShapesPanel());   //获得面板
	}
	}
	
	class ShapesPanel extends JPanel{
		public void paintComponent(Graphics g){
			super.paintComponent(g);
			g.drawLine(0,0,100,100);//划线
			g.drawRect(10,10,60,30);//绘制矩形
			g.drawRoundRect(90,80,80,80,20,20);//绘制圆角矩形
//			g.drawPolygon(xpoints,ypoints,5);	// 绘制多边形
			g.setColor(Color.red);
			g.fillRect(90,10,80,30);//绘制填充矩形 
			g.fillRoundRect(180,50,100,80,15,15);//绘制填充圆角矩形
			g.fillOval(10,100,80,30);//绘制填充椭圆
	}
	}