Changing the Current Directory
February 5th, 2009
- Basic Thread Advice
- Dealing with NullPointerExceptions
- Changing the Current Directory
- String Concatenation Options
- String Concatenation Revisited
One of the more common requests I see online from beginners (and from a not-so-beginner just now) is how to change the current directory. This one is really simple, so here’s a quick snippet and the output.
System.out.println(new File(“.”).getAbsolutePath());
System.setProperty(“user.dir”, System.getProperty(“java.io.tmpdir”));
System.out.println(new File(“.”).getAbsolutePath());
And the output:
/Users/jlee/.
/tmp/.
See? Simple.
Categories: Java
Does this change pwd, or just how File’s string constructors build FS paths? I can see this producing weird and confusing results if you have native code that handles paths that’s not aware of the System property.
I’m not sure how it’d affect JNI. People who use JNI deserve whatever pain they get.