java - 如何保存变量供以后访问？

Question

我正在尝试制作一个基于文本的游戏，其中您有不同级别的生活不同方面和其他变量。我正在尝试将它们保存到某种文件中，以便稍后可以将它们取回。

到目前为止，这就是我对变量的了解:

public class baseLevels {
    public boolean gameOver = false;

    //100 is a normal level
    public int happyLevel = 100;
    public int sleepLevel = 100;
    public int angerLevel = 100;
    public int healthLevel = 100;
    public int popularityLevel = 100;
    public int smartLevel = 100;
    public int weight = 100;

    //0 = Single 1 = Not very close, but dating 2 = close and dating 3 = engaged 4 = married
    public int relationshipStatus = 0; 
    public boolean children = false;
    public int numberOfChildren = 0;

    //Tests if the player is injured, 1-5 on severeness
    public boolean injured = false;
    public int severity = 1;
    public boolean healthCare = false;

    //Money status: 1 is poor, 5 is rich
    public int money = 5000;
    public int wealthStatus = 1;  

    //Family is alive or dead
    public boolean momDead = false;
    public boolean dadDead = false;
    public boolean sisterDead = false;
    public boolean brotherDead = false;
    public boolean grandmaDead = false;
    public boolean grandpaDead = false;

    //Misc. variables
    public boolean car = false;
    public boolean house = false;
    public boolean dead = false;
    public boolean likeMusic = false;


}

看了某人发布的属性方法后，我喜欢它，但我需要一种将属性值设置为数字的方法。当我尝试这样做时，我收到一条错误消息，指出我不能拥有字符串和整数。

Answer 1

java.util.Properties对于这样简单的事情来说可能是最好的类(class)。它具有从文件加载和保存到文件的内置方法。

Properties props = new Properties();
props.load(new FileInputStream("data.props"));
String someProp = props.getProperty("myName");
props.setProperty("myName", "John Smith");
props.store(new PrintWriter("data.props"));