第一周上机练习

1.输出学号班级和姓名

package Class;

public class Class1 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Student s1=new Student(193230304, 03, "杜鑫宇");
        s1.shuchu();
    }

}
class Student{
    int xuehao,banji;
    String xingming;
    public Student(int xuehao, int banji, String xingming) {
        super();
        this.xuehao = xuehao;
        this.banji = banji;
        this.xingming = xingming;
    }
    
    void shuchu(){
        System.out.println("学号："+xuehao+" "+"班级："+banji+" "+"姓名："+xingming);
    }
}

 

 

 2.输出以下图形

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

package Class;

public class Class1 {

    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 Class;

public class Class1 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
     Sum s1=new Sum(5, 8);
     s1.shuchu();
    }

}
class Sum{
    int a,b;
   
    public Sum(int a, int b) {
        super();
        this.a = a;
        this.b = b;
    }

    void shuchu(){
        int sum;
        sum=a*a+b*b;
        System.out.println(sum);
    }
}