（测试类） package com.badu; public class Tste {             public static void main(String[] args) {         Class5 sa=new Class5("周阿郎",3,2,24);         Class5 [] a=new Class5[5];         a[0]=new Class5("张扬",2,4,34);          a [1]=new Class5("刘禅",3,2,24);         a[2]=new Class5("张燕",4,23,78);         a [3]=new Class5("周少博",32,23,99);         a [4]=new Class5("张旭",24,13,100);         System.out.println(sa.toString());         double [] w={a[0].getSJava(),a[1].getSJava(),a[2].getSJava(),a[3].getSJava(),a[4].getSJava()};         int s=0;             double max=w[2];             double min=w[0];                 for(int i=0;i<5;i++){             s+=w[i]/5;             if(max
     
      w[0]){                 min=w[0];                             }                     }         System.out.println("java成绩的平均值为"+s+",最小值为"+min+",最大值为"+max);         } } （一） package com.badu; public class Class5 {   private String name;   private int age;   private int sno;   private int sJava;   public  Class5(String a,int w,int g,int l){            name=a;       age=w;       sno=g;       sJava=l;         }public  Class5(int b){       age=b;   }public Class5(int c,int d){           sno=c;       sJava=d;               }   public Class5(){}     public String getName(){         return name;             }     public int getAge(){         return age;     }     public int getNo(){         return sno;     }     public int getSJava(){         return sJava;     }     public String toString (){         String s="我叫"+name+",我今年"+age+"岁"+"我的java成绩是"+sJava;         return s;     }     public static void main(String[] args) {         } }