Java第一周作业

1.输出学号班级和姓名

package homework;

public class Home1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("193230533 计算机1905 杨振艺");
    }

}

 

2.

输出以下图形

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

package homework;

public class Home2 {

    /**
     * @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 homework;

public class Home3 {

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

}