写一段java代码，【问题描述】 定义一个Student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。 Student类实现Comparable接口，实现比较两个Student对象的大小，比较规则是：身高和体重各占30%权重，分数占40%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。 最后，定义一个测试类，生成一个数组，该数组有6个元素，每个元素类型是Student，调用Arrays.sort方法对该数组排序。 按照以上描述，以及输出样例的结果，完成程序代码的填写。 【输入形式】 无 【输出形式】 数组排序前以及排序后的结果。 【样例输入】 无 【样例输出】 array sort before: I am zhangsan,my height 170.0,my weight 110.0,my score 95.0 I am lisi,my height 168.0,my weight 120.0,my score 75.0 I am wangwu,my height 165.0,my weight 115.0,my score 88.0 I am zhaoliu,my height 172.0,my weight 121.0,my score 90.0 I am zhouqi,my height 160.0,my weight 100.0,my score 85.0 I am zhengba,my height 166.0,my weight 119.0,my score 70.0 array sort after: Student [name=zhouqi,height=160.0,weight=100.0,score=85.0] Student [name=zhengba,height=166.0,weight=119.0,score=70.0] Student [name=lisi,height=168.0,weight=120.0,score=75.0] Student [name=wangwu,height=165.0,weight=115.0,score=88.0] Student [name=zhangsan,height=170.0,weight=110.0,score=95.0] Student [name=zhaoliu,height=172.0,weight=121.0,score=90.0]

import java.util.Arrays;

public class Student implements Comparable<Student>{
    private String name;
    private double height;
    private double weight;
    private double score;
    
    public Student(String name, double height, double weight, double score) {
        this.name = name;
        this.height = height;
        this.weight = weight;
        this.score = score;
    }
    
    public void speak() {
        System.out.println("I am " + name + ",my height " + height + ",my weight " + weight + ",my score " + score);
    }
    
    @Override
    public int compareTo(Student o) {
        double weightSum = height * 0.3 + weight * 0.3 + score * 0.4;
        double oWeightSum = o.height * 0.3 + o.weight * 0.3 + o.score * 0.4;
        if(weightSum > oWeightSum) {
            return 1;
        } else if(weightSum < oWeightSum) {
            return -1;
        } else {
            return 0;
        }
    }
    
    public static void main(String[] args) {
        Student[] students = new Student[6];
        students[0] = new Student("zhangsan", 170.0, 110.0, 95.0);
        students[1] = new Student("lisi", 168.0, 120.0, 75.0);
        students[2] = new Student("wangwu", 165.0, 115.0, 88.0);
        students[3] = new Student("zhaoliu", 172.0, 121.0, 90.0);
        students[4] = new Student("zhouqi", 160.0, 100.0, 85.0);
        students[5] = new Student("zhengba", 166.0, 119.0, 70.0);
        
        System.out.println("array sort before:");
        for(Student student : students) {
            student.speak();
        }
        
        Arrays.sort(students);
        
        System.out.println("\narray sort after:");
        for(Student student : students) {
            System.out.println(student.toString());
        }
    }
    
    @Override
    public String toString() {
        return "Student [name=" + name + ",height=" + height + ",weight=" + weight + ",score=" + score + "]";
    }
}