用java打印的一个五角星

//杨辉三角
public class Test1{ 
public int count(int x,int y){ 
return (y==1||x==y)?1:count(x-1,y-1)+count(x-1,y); 
} 
public void list(int len){ 
for(int i=1;i<=len;i++) 
for(int j=1;j<=i;j++) 
System.out.print(count(i,j)+(j==i?"\n":" ")); 
} 
public static void main(String args[]){ 
new Test1().list(10); 
} 
}

//五角星
import   java.awt.*;   
  import   javax.swing.*;   
    
  public   class   Test1   extends   JPanel   {   
    
  private   JFrame   frame   =   null;   
    
  private   int   r   =   50;   //   半径   
    
  private   int[]   x   =   new   int[5];   //   5个X顶点坐标   
    
  private   int[]   y   =   new   int[5];   //   5个Y顶点坐标   
    
  public   Test1()   {