请高手解释一下这代码是啥意思
我主要想知道为啥打印菱形要用这样的语句
求解释一下
public class Var_02 {   
    public static void main(String args[]){            
        for(int i=1;i<=7;i+=2){
            for(int kong=7;kong>i-1;kong--){
                System.out.print(" ");
            }
            for(int xing=1;xing<=i;xing++){
                System.out.print("* ");
            }
               System.out.println();
        }
        for(int j=1;j<=5;j+=2){
                for(int kong1=1;kong1<j+3;kong1++){
                    System.out.print(" ");
                }
                for(int xing1=5;xing1>=j;xing1--){
                    System.out.print("* ");
                }
            System.out.println();
        }
    }
}

你一点都不坑