Shorthand to create a path in Java?

I have a code example which creates paths like this :

    String path = System.getProperty("user.dir") + File.separator + "games" + File.separator + "game.exe";

It is irritating and difficult to type File.separator repeatedly. Is there a shorter way to create the path ? I created a custom function to do that, but I am not sure if it is the right way. Please advise.

//Ex. getPath("downloads", "games", "racing.exe") ---> \downloads\games\racing.exe
public static String getPath(String...pathFragments){
    StringBuilder sb = new StringBuilder(File.separator);

    for(int i = 0; i < pathFragments.length-1; i++){
        sb.append(pathFragments[i] + File.separator);
    }

    //Append last pathFragment.
    sb.append(pathFragments[pathFragments.length-1]);

    return sb.toString();
}

First thought: Why do you bother with File.separator? Use the cross-platform system-independent file separator character / instead.

String path = System.getProperty("user.dir") + "/games/game.exe";

The only use for File.separator is if you are constructing a file path for a user interface, and want to show the path string to the user, and don't want to confuse Windows users by mixing / and \ in the path.

Second thought: Unless you have a compelling reason to work with Strings, use Paths.get. Compelling reasons include staying backwards compatible with ancient versions of Java or libraries.

// You probably don't need to add System.getProperty("user.dir")
// Relative paths are resolved against current working directory
Path path = Paths.get("games/game.exe");

Third thought: Use String.join instead of StringBuilder.append

public static String getPath(String... pathFragments) {
    return File.separator + String.join(File.separator, pathFragments);
}

String[] leafs = { "games", "game.exe" };
String path = makePath("user.dir", File.separator, leafs);
// or
String path = makePath("user.dir", File.separator, "games", "game.exe");
System.out.println(path);
	
	
public static String makePath(String property,String separator, String... leafs) {
	    return System.getProperty(property) + File.separator 
	            + String.join(File.separator, leafs);
}
	

</details>



# 答案3
**得分**: 1

你不需要一个函数，一旦你使用了 `File` 或者 `Path`，那么 `File.separator` 应该很少被使用。例如，`Path.of()` 是你所需要的全部：

```java
Path path = Path.of(System.getProperty("user.dir"), "games", "game.exe");
System.out.println("path=" + path);

一些示例使用 Paths.get()，但实际上它只是调用了 Path.of()。注意，Paths.of() 适用于 JDK11+，而 Paths.get() 适用于 JDK7+。

Path path = Path.of(System.getProperty("user.dir"), "games", "game.exe");
System.out.println("path="+path);