jiandande.java

编写一个应用程序

import java.awt.*;
import javax.swing.JPanel;
public class jiandande extends JPanel
{
	private final int x=10,y=10,dia=20;
	private  int a,b,c,aa,bb,cc,aaa,bbb,ccc;
	public jiandande()
	{
			setBackground(Color.pink);
		setPreferredSize(new Dimension(200,200));
	
	}

	public void paintComponent(Graphics page)
	{
		super.paintComponent(page);

		Color co=new Color(a,b,c);
		page.setColor(co);
		page.fillOval(x,y,dia,dia);
	
		Color co2=new Color(aa,bb,cc);
		page.setColor(co2);
		page.fillOval(x+30,y,dia,dia);
	
		Color co3=new Color(aaa,bbb,ccc);
		page.setColor(co3);
		page.fillOval(x+60,y,dia,dia);
	}

	public void set1(int a1,int b1,int c1)
	{
		a=a1;
		b=b1;
		c=c1;
	
	}

	public void set2(int a2,int b2,int c2)
	{
		aa=a2;
		bb=b2;
		cc=c2;
		
	}

	public void set3(int a3,int b3,int c3)
	{
		aaa=a3;
		bbb=b3;
		ccc=c3;
	
	}
	
}