jave第一周作业

1.输出学号班级和姓名

public class test1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("计算机1905叶鑫宇");
        System.out.println("193230534");
    }

}

 

2..输出以下图形

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

package class1;

public class test2 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        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

package class1;

public class test3 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
int a=5;
int b=8;
System.out.println(a+b);
System.out.println(a*a+b*b);
    }

}