[b]（测试类） [/b]   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]){                  max=w[2];              }              if(min>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);          } }  [b]（一） [/b]   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) {        } }