Java setter和getters [英] Java setters and getters

问题描述

我已经在Java中苦苦挣扎了很长一段时间了。

I have been struggling with setters and getters in java for quite a long time now.

例如，如果我想用适当的set和get方法编写一个包含名称，性别，年龄等信息的类。然后在另一个课程中，我想以此为例测试我的集合和getter：

For instance, if I want to write a class with some information as name, sex, age etc with appropriate set and get methods. Then in a another class I want to test my set and getters with this as a example:

personInfo = myInfo() = new Personinfo("Anna", "female", "17");

我该怎么做？

我知道我可以打印输出：

I know that I can have a printout like:

public void printout() {
    System.out.printf("Your name is:  " + getName() + 
              " and you are a " + getSex());
}

推荐答案

这是一个简单的例子告诉你如何做到这一点：

This is a simple example to show you how to do it:

public class Person {
private String name;
private String gender;
private int age;
Person(String name, String gender, int age){
    this.name = name;
    this.gender = gender;
    this.age = age;
}
public void setName(String name){
    this.name = name;
}
public void setGender(String gender){
    this.gender = gender;
}
public void setAge(int age){
    this.age = age;
}
public String getName(){
    return this.name;
}
public String getGender(){
    return this.gender;
}
public int getAge(){
   return this.age;
}
public static void main(String[] args)
{
    Person me = new Person("MyName","male",20);
    System.out.println("My name is:" + me.getName());
    me.setName("OtherName");
    System.out.println("My name is:" + me.getName());
}
}

这将打印出来：

我的名字是：MyName

My name is:MyName

我的名字是：OtherName

My name is:OtherName

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