You could use
Leading:
System.out.println("//test/me".replaceAll("^/+", ""));
Trailing:
System.out.println("//test/me//".replaceAll("/+$", ""));
You could use
Leading:
System.out.println("//test/me".replaceAll("^/+", ""));
Trailing:
System.out.println("//test/me//".replaceAll("/+$", ""));