Java第一周作业

1.输出学号班级和姓名

public class xuehao {

 /**
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  System.out.println("193230519");
  System.out.println("计算机1905");
  System.out.println("石红岩");
 }

}

 

 

2.输出以下图形

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

public class tuxing {

    /**
     * @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

public class qiuhe {

    /**
     * @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);
    }
}