JAVA编程，定义一个Customer类

Question

JAVA定义一个Customer类，包含姓名（name）、身高（height）、体重（weight），分数（score）以及speak（）方法，该方法的功能是，输出自己的相关信息。 Customer类实现Comparable接口，实现比较两个Customer对象的大小，比较规则是：身高占20%权重，体重占30%权重，分数占50%权重，以综合计算三项权重和之后的值作为判断对象大小的依据。

import java.util.Arrays;

class Customer implements Comparable {
private String name;
private float height, weight, score;

    public  Customer(String  name,  float  height,  float  weight,  float  score)  {
            super();
            this.name  =  name;
            this.height  =  height;
            this.weight  =  weight;
            this.score  =  score;
    }

    public  String  getName()  {
            return  name;
    }

    public  void  setName(String  name)  {
            this.name  =  name;
    }

    public  float  getHeight()  {
            return  height;
    }

    public  void  setHeight(float  height)  {
            this.height  =  height;
    }

    public  float  getWeight()  {
            return  weight;
    }

    public  void  setWeight(float  weight)  {
            this.weight  =  weight;
    }

    public  float  getScore()  {
            return  score;
    }

    public  void  setScore(float  score)  {
            this.score  =  score;
    }

    public  void  speak()  {
            System.out.println("I  am  "  +  name  +  ",my  height  "  +  height  +  ",my  weight  "  +  weight  +  ",my  score  "  +  score);
    }

    public  int  compareTo(Customer  o)  {
                            

float s1=this.height+this.weight;
float s2=o.height+o.weight;
if(s1>s2) {
return 1;
}
if(s1<s2) {
return -1;
}
return 0;
}

    }

    public  String  toString()  {
            

return "Customer [name="+name+",height="+height+",weight="+weight+"]";

    }

}

public class TestCompare {
public static void main(String[] args) {
int i;
Customer ps[] = new Customer[6];
ps[0] = new Customer("zhangsan", 170, 110, 95);
ps[1] = new Customer("lisi", 168, 120, 75);
ps[2] = new Customer("wangwu", 165, 115, 88);
ps[3] = new Customer("zhaoliu", 172, 121, 90);
ps[4] = new Customer("zhouqi", 160, 100, 85);
ps[5] = new Customer("zhengba", 166, 119, 70);
System.out.println("array sort before:");
for (i = 0; i < ps.length; i++) {
ps[i].speak();
}
Arrays.sort(ps); // call sort method
System.out.println("\narray sort after:");
for (i = 0; i < ps.length; i++) {
System.out.println(ps[i]);
}
}
}

TestCompare.java:65: error: class, interface, or enum expected

public String toString() {
 ^

1 error

怎么解决啊， public String toString() {

return "Customer [name="+name+",height="+height+",weight="+weight+"]";

    }

}
这一段错误

该如何正确得到结果

Answer 1

给你改好了，采纳一下，亲

import java.util.*;
import java.io.*;

public class Test {

    public static void main(String[] args) {
        int i;
        Customer ps[] = new Customer[6];
        ps[0] = new Customer("zhangsan", 170, 110, 95);
        ps[1] = new Customer("lisi", 168, 120, 75);
        ps[2] = new Customer("wangwu", 165, 115, 88);
        ps[3] = new Customer("zhaoliu", 172, 121, 90);
        ps[4] = new Customer("zhouqi", 160, 100, 85);
        ps[5] = new Customer("zhengba", 166, 119, 70);
        System.out.println("array sort before:");
        for (i = 0; i < ps.length; i++) {
            ps[i].speak();
        }
        Arrays.sort(ps); // call sort method
        System.out.println("\narray sort after:");
        for (i = 0; i < ps.length; i++) {
            System.out.println(ps[i]);
        }
    }




}

class Customer implements Comparable{
    private String name;
    private float height, weight, score;
    public  Customer(String  name,  float  height,  float  weight,  float  score)  {
        super();
        this.name  =  name;
        this.height  =  height;
        this.weight  =  weight;
        this.score  =  score;
    }

    public  String  getName()  {
        return  name;
    }

    public  void  setName(String  name)  {
        this.name  =  name;
    }

    public  float  getHeight()  {
        return  height;
    }

    public  void  setHeight(float  height)  {
        this.height  =  height;
    }

    public  float  getWeight()  {
        return  weight;
    }

    public  void  setWeight(float  weight)  {
        this.weight  =  weight;
    }

    public  float  getScore()  {
        return  score;
    }

    public  void  setScore(float  score)  {
        this.score  =  score;
    }

    public  void  speak()  {
        System.out.println("I  am  "  +  name  +  ",my  height  "  +  height  +  ",my  weight  "  +  weight  +  ",my  score  "  +  score);
    }

    public  int  compareTo(Customer  o)  {
        float s1=this.height+this.weight;
        float s2=o.height+o.weight;
        if(s1>s2) {
            return 1;
        }
        if(s1<s2) {
            return -1;
        }
        return 0;
    }


    public  String  toString()  {
        return "Customer [name="+name+",height="+height+",weight="+weight+"]";
    }

    @Override
    public int compareTo(Object o1) {
        float s1=this.height+this.weight;
        Customer o=(Customer)o1;
        float s2=o.height+o.weight;
        if(s1>s2) {
            return 1;
        }
        if(s1<s2) {
            return -1;
        }
        return 0;
    }
}