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Jin Kwon
Jin Kwon

Reputation: 21978

Should I care about File#separator for Path#resolve(String)

I'm writing a method copies files from HDFS to local disk.

String pathString = ".../.../..."; slash-separated HDFS path string
Path directory = ...;

Path target = directory.resolve(pathString);

Now should I replace all slashes with File#separator with pathString?

In other words,

Can I do following even with Windows?

Path base = Path.get(a, b);
String pathname = "c/d";
Path target = base.resolve(pathname); // Will work as a\b\c\d?

Upvotes: 0

Views: 222

Answers (2)

Jin Kwon
Jin Kwon

Reputation: 21978

I'm adding my own answer.

// event with Windows
final Path directory = Paths.get("a", "b");
final String pathname = "c/d";
final Path resolved = directory.resolve(pathname);
log.debug("resolved: {}", resolved.toAbsolutePath());

I got .:\...\a\b\c\d.

Upvotes: 0

Ken Wayne VanderLinde
Ken Wayne VanderLinde

Reputation: 19339

File#separator is not necessary if you want to keep your path logic platform-agnostic. An easier way to do it is to build the child path with Paths.get() and resolve that. E.g.,:

Path path = Paths.get("a", "b", "c");
Path directory = ...;

Path target = directory.resolve(path);

Upvotes: 2

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