Java第一次作业

1.输出学号班级和姓名

package homework;

public class Test {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("193230313,计算机1903,刘广");
    }

}

 

2.输出以下图形

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

package homework;

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 homework;

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*a+b*b);
    }

}