java代码数组求平均值，最大值，最小值

（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]){ 
                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);     
    }
 
} 
（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) { 
    

    }
 
}