两个不同的变量得到相同的值 [英] Two different variables getting same value

问题描述

我目前正在研究一个小型Java应用程序，但我遇到了一个问题。我创建了两个不同的变量，但是在运行代码之后，第一个变量获得的值与第二个变量相同。它们应该是不同的。

I am currently working on a small Java application and I ran into a problem. I create two different variables, but after I run the code, the first variable is getting the same value as the second one. They should be different.

这是我的自定义文件类：

Here is my custom file class:

public class MyFile {

    private static String path;
    private static String name;

    private static final String FILE_SEPARATOR = "/";

    public MyFile(String path) {
        System.out.println(path);
        this.path = "";
        this.name = "";
        this.path = /*FILE_SEPARATOR*/path;
        String[] dirs = path.split(FILE_SEPARATOR);
        this.name = dirs[dirs.length - 1];
    }

    public static String getPath() {
        return path;
    }

    public static String getName() {
        return name;
    }

    public String toString() {
        return "Path: " + path + ", Name: " + name;
    }
}

这里我使用的是变量：

MyFile modelFile = new MyFile("res\\model.dae");
MyFile textureFile = new MyFile("res\\diffuse.png");
System.out.println(modelFile.toString());
System.out.println(textureFile.toString());

输出如下： http://imgur.com/a/Nu3N6

推荐答案

In MyFile 类，您将这些字段声明为 static 字段：

In MyFile class, you declare these fields as static fields :

private static String path;
private static String name;

因此您可以为它们分配一个值 static 字段在类的所有实例之间共享。

So you can assign to them a single value as a static field is shared among all instances of the class.

您应该将这些字段声明为实例字段，以便为每个设置不同的值MyFile 实例：

You should rather declare these fields as instance fields to have distinct values for each MyFile instance :

private String path;
private String name;

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