Normalize file system path in java.

NormalizePathSnippet.java

import java.lang.System;
import java.util.regex.Matcher;

class NormalizePathSnippet {

    public static void main(String[] args) {
        // tests
        System.out.println(normalizePath("foo\\abc"));
        System.out.println(normalizePath("foo/abc"));
        System.out.println(normalizePath("\\foo/abc"));
        System.out.println(normalizePath("\\foo/abc"));
        System.out.println(normalizePath("\\foo\\abc"));
        System.out.println(normalizePath("\\foo/abc/"));
        System.out.println(normalizePath("\\foo\\abc//"));
        System.out.println(normalizePath("/foo/abc"));
        System.out.println(normalizePath("/foo/abc"));
        System.out.println(normalizePath("/foo\\abc"));
        System.out.println(normalizePath("/foo/abc/"));
        System.out.println(normalizePath("/foo\\abc//"));
        System.out.println(normalizePath("/\\foo/abc"));
        System.out.println(normalizePath("/\\foo/abc"));
        System.out.println(normalizePath("/\\foo\\abc"));
        System.out.println(normalizePath("/\\foo/abc/"));
        System.out.println(normalizePath("/\\foo\\abc//"));
        System.out.println(normalizePath("/foo/abc"));
        System.out.println(normalizePath("/foo/abc"));
        System.out.println(normalizePath("/foo\\abc"));
        System.out.println(normalizePath("/foo/abc/"));
        System.out.println(normalizePath("/foo\\abc//"));
    }

    public static String normalizePath(String path) {
        // replace both types of slash
        return path.replaceAll("(\\\\|/){1,}", Matcher.quoteReplacement(System.getProperty("file.separator")));
    }
}