Joining paths in Java

Question

In Python I can join two paths with os.path.join:

os.path.join(\"foo\", \"bar\") # => \"foo/bar\"

I\'m trying to

Answer 1

The most reliable, platform-independent way to join paths in Java is by using Path::resolve (as noted in the JavaDoc for Paths::get). For an arbitrary-length array of Strings representing pieces of a path, these could be joined together using a Java Stream:

private static final String[] pieces = {
    System.getProperty("user.dir"),
    "data",
    "foo.txt"};
public static void main (String[] args) {
    Path dest = Arrays.stream(pieces).reduce(
    /* identity    */ Paths.get(""),
    /* accumulator */ Path::resolve,
    /* combiner    */ Path::resolve);
    System.out.println(dest);
}