public class Student {
private String Name;
private double English;
private double Math;

public Student(){

}

public Student(String Name,double English,double Math){
this.Name=name;
this.English=English;
this.Math=Math;

}

}

------解决方案--------------------
Java code

public class Student
{
    private String name;
    private double english;
    private double math;
    
    //封装变量
    public String getName()
    {
        return name;
    }

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

    public double getEnglish()
    {
        return english;
    }

    public void setEnglish(double english)
    {
        this.english = english;
    }

    public double getMath()
    {
        return math;
    }

    public void setMath(double math)
    {
        this.math = math;
    }

    //无参构造函数
    public Student(){}
    
    //重载构造函数
    public Student(String name , double english , double math){
        this.name= name;
        this.english =english;
        this.math   = math;
        
    }
    
    
}

------解决方案--------------------

Java code

public class Student {
    private String name; //姓名
    private double english;//英语成绩
    private double math;//数学成绩

    //getter and setter 方法
    public String getName() {
        return name;
    }

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

    public double getEnglish() {
        return english;
    }

    public void setEnglish(double english) {
        this.english = english;
    }

    public double getMath() {
        return math;
    }

    public void setMath(double math) {
        this.math = math;
    }

    /**
     * 默认构造函数
     */
    public Student() {

    }

    /**
     * 3个参数构造函数
     * @param name
     * @param english
     * @param math
     */
    public Student(String name, double english, double math) {
        this.name = name;
        this.english = english;
        this.math = math;
    }

    /**
     * 重写toString方法
     */
    @Override
    public String toString() {
        return "Student [name=" + name + ", english=" + english + ", math="
                + math + "]";
    }
    
    /**
     * 测试main方法 
     * @param args
     */
    public static void main(String[] args) {
        System.out.println(new Student("张三 " ,85.5, 90).toString()) ;
    }

}