第一次Java作业

1.输出学号班级和姓名

public class a {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("193230220计算机1902潘业铭");
    }

}

22.输出以下图形

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

public class a {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("  *\n" + " ***\n" + "*****\n" + " ***\n" + "  *\n");
    }

}

3.定义两个整型变量a=5  b=8  求平方和并输出

public class a {

    /**
     * @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);
    }

}