java第一周作业

1.输出学号班级和姓名

public class TestHello {
    public static void main(String[]args){
        System.out.println("193230504计算机1905董颜赫");
    }
}

2.输出以下图形

     *
    ***
   *****
    ***
     *

public class CopyOfTestHello1 {
    public static void main(String[]args){
        System.out.println("  *");
        System.out.println(" ***");
        System.out.println("*****");
        System.out.println(" ***");
        System.out.println("  *");
    }
}

3.定义两个整型变量a=5  b=8  求平方和并输出

public class CopyOfTestHello2 {
    public static void main(String[]args){
        int a=5;
        int b=8;
        System.out.println(a*a+b*b);
    }
}