package test; public class pp { private String name=""; private String addreass=""; public pp(String name2, String address) { // TODO Auto-generated constructor stub } public void pp (String name , String addreass) { this.name=name; this.addreass=addreass; } } public abstract class Employee extends pp{ private String ID=""; private double wage=0; private int age =0; public Employee(String name, String address, String ID, double wage, int age) { super(name, address); this.ID = ID; this.wage = wage; this.age = age; } public abstract void add (String position); } 帮我改错

在pp类中，您需要将构造函数的参数名称与类变量名称匹配。修改后的代码如下：

package test;

public class pp {

    private String name = "";
    private String address = "";

    public pp(String name, String address) {
        this.name = name;
        this.address = address;
    }

}

在Employee类中，您需要添加一个具体的构造函数来调用父类的构造函数。修改后的代码如下:

package test;

public abstract class Employee extends pp {

    private String ID = "";
    private double wage = 0;
    private int age = 0;

    public Employee(String name, String address, String ID, double wage, int age) {
        super(name, address);
        this.ID = ID;
        this.wage = wage;
        this.age = age;
    }

    public abstract void add(String position);

}

相关问题

package com.unit2.test; public class Test4 { public static void main(String[] args) { Salary s=new Salary("员工A","北京",3,3600.00); Employee e=new Salary("员工B","上海",2,2400.00); System.out.println("使用Salary的引用调用mailcheck--"); s.mailCheck(); System.out.println("\n使用employee的引用调用mailcheck--"); e.mailCheck(); } public class Employee{ private String name; private String address; private int number; public Employee(String name,String address,int number) { System.out.println("Employee 构造函数"); this.name=name; this.address=address; this.number=number; } public void mailCheck() { System.out.println("邮寄支票给："+this.name+" "+this.address); } public String toString() { return name+" "+address+" "+number; } public String getName() { return name; } public String getAddress(String newAddress) { return address; } public void setAddress(String newAddress) { address=newAddress; } public int getNumber() { return number; } } public static class Salary extends Employee { private double salary;//全年工资 public Salary(String name,String address,int number,double salary) { super(name,address,number); setSalary(salary); } public void mailCheck() { System.out.println("Salary类的mailcheck方法"); System.out.println("邮寄支票给："+getName()+",工资为"+salary); } public double getSalary() { return salary; } public void setSalary(double newSalary) { if(newSalary>=0.0) { salary=newSalary; } } public double computePay() { System.out.println("计算工资，付给："+getName()); return salary/52; } } }更正以上代码错误

以下是更正后的代码：

package com.unit2.test;

public class Test4 {
    public static void main(String[] args) {
        Salary s = new Salary("员工A", "北京", 3, 3600.00);
        Employee e = new Salary("员工B", "上海", 2, 2400.00);
        System.out.println("使用Salary的引用调用mailcheck--");
        s.mailCheck();
        System.out.println("\n使用employee的引用调用mailcheck--");
        e.mailCheck();
    }

    public static class Employee {
        private String name;
        private String address;
        private int number;

        public Employee(String name, String address, int number) {
            System.out.println("Employee 构造函数");
            this.name = name;
            this.address = address;
            this.number = number;
        }

        public void mailCheck() {
            System.out.println("邮寄支票给：" + this.name + " " + this.address);
        }

        public String toString() {
            return name + " " + address + " " + number;
        }

        public String getName() {
            return name;
        }

        public String getAddress() {
            return address;
        }

        public void setAddress(String newAddress) {
            address = newAddress;
        }

        public int getNumber() {
            return number;
        }
    }

    public static class Salary extends Employee {
        private double salary;// 全年工资

        public Salary(String name, String address, int number, double salary) {
            super(name, address, number);
            setSalary(salary);
        }

        public void mailCheck() {
            System.out.println("Salary类的mailcheck方法");
            System.out.println("邮寄支票给：" + getName() + ",工资为" + salary);
        }

        public double getSalary() {
            return salary;
        }

        public void setSalary(double newSalary) {
            if (newSalary >= 0.0) {
                salary = newSalary;
            }
        }

        public double computePay() {
            System.out.println("计算工资，付给：" + getName());
            return salary / 52;
        }
    }
}

更正说明：

1. 将 `Employee` 类和 `Salary` 类都声明为静态内部类，以便在 `main` 方法中使用。

2. `Employee` 类中的 `getAddress` 方法声明错误，应该是 `public String getAddress()`。

3. 在 `Salary` 类中重写了 `mailCheck` 方法，输出的信息更具体，同时也调用了 `getName` 方法来获取员工名字。

4. 在 `Salary` 类中新增了 `computePay` 方法，用于计算每周的工资。

package com.unit2.test; public class Test4 { public static void main(String[] args) { Salary s=new Salary("员工A","北京",3,3600.00); Employee e=new Salary("员工B","上海",2,2400.00); System.out.println("使用Salary的引用调用mailcheck--"); s.mailCheck(); System.out.println("\n使用employee的引用调用mailcheck--"); e.mailCheck(); } public class Employee{ private String name; private String address; private int number; public Employee(String name,String address,int number) { System.out.println("Employee 构造函数"); this.name=name; this.address=address; this.number=number; } public void mailCheck() { System.out.println("邮寄支票给："+this.name+" "+this.address); } public String toString() { return name+" "+address+" "+number; } public String getName() { return name; } public String getAddress() { return address; } public void setAddress(String newAddress) { address=newAddress; } public int getNumber() { return number; } } public class Salary extends Employee { private double salary;//全年工资 public Salary(String name,String address,int number,double salary) { super(name,address,number); setSalary(salary); } public void mailCheck() { System.out.println("Salary类的mailcheck方法"); System.out.println("邮寄支票给："+getName()+",工资为"+salary); } public double getSalary() { return salary; } public void setSalary(double newSalary) { if(newSalary>=0.0) { salary=newSalary; } } public double computePay() { System.out.println("计算工资，付给："+getName()); return salary/52; } } }更正代码错误

根据代码格式，你应该是在一个文件中定义了两个类Test4和Employee以及一个子类Salary，但是在Test4类中定义了Employee类，这是不正确的。应该将Employee类定义在Test4类的外部，例如：

package com.unit2.test;

public class Test4 {
    public static void main(String[] args) {
        Salary s = new Salary("员工A", "北京", 3, 3600.00);
        Employee e = new Salary("员工B", "上海", 2, 2400.00);
        System.out.println("使用Salary的引用调用mailcheck--");
        s.mailCheck();
        System.out.println("\n使用employee的引用调用mailcheck--");
        e.mailCheck();
    }
}

class Employee {
    private String name;
    private String address;
    private int number;

    public Employee(String name, String address, int number) {
        System.out.println("Employee 构造函数");
        this.name = name;
        this.address = address;
        this.number = number;
    }

    public void mailCheck() {
        System.out.println("邮寄支票给：" + this.name + " " + this.address);
    }

    public String toString() {
        return name + " " + address + " " + number;
    }

    public String getName() {
        return name;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String newAddress) {
        address = newAddress;
    }

    public int getNumber() {
        return number;
    }
}

class Salary extends Employee {
    private double salary;// 全年工资

    public Salary(String name, String address, int number, double salary) {
        super(name, address, number);
        setSalary(salary);
    }

    public void mailCheck() {
        System.out.println("Salary类的mailcheck方法");
        System.out.println("邮寄支票给：" + getName() + ",工资为" + salary);
    }

    public double getSalary() {
        return salary;
    }

    public void setSalary(double newSalary) {
        if (newSalary >= 0.0) {
            salary = newSalary;
        }
    }

    public double computePay() {
        System.out.println("计算工资，付给：" + getName());
        return salary / 52;
    }
}