用java输出一个三角形

public class TestDemo01 {
    public static void main(String[] args) {
        //三角形   五行
         for (int i = 1;i<=5;i++){
             for (int j = 5;j>=i;j--){
                 System.out.print(" ");
             }
             for (int j = 1;j<=i;j++){
                 System.out.print("*");
             }
             for (int j =1;j<i;j++){
                 System.out.print("*");
             }

             System.out.println( );
         }
    }
}