Get entire substring after 2nd occurrences of a delimiter including delimiter-CodePudding

I have a string(s) ( NOT Path or File-path ) like below:

String str1 = "/first/second/third/fourth/fifth";
String str2 = "/foo/bar/blah";

GIVEN: The string will always start with leading slash and there are guaranteed minimum two slashes (can be more too, as above) and some substring after that.

Now I am trying to capture the entire substring "after-first-two-slashes". So that my output becomes:

Output:
str1_becomes = /second/third/fourth/fifth
str2_becomes = /bar/blah

Please note that I want to retain the leading slash too. What efficient approach should I follow to achieve it? Need some directions/clues as feeling lost here. Preferably java 1.8 based.

CodePudding user response：

You can easily do this using simple string operations.

If the string always begins with a slash and has two slashes, you could just use indexOf for finding the second slash's position:

str1.indexOf('/',1);

This looks for the first slash starting with the second character.

After that, you can use substring for getting tje resulting string (starting with the index you just found out):

str1.substring(str1.indexOf('/',1));

If the first slash is not necessarily the first character, you can search for the first slash using indexOf and use that result 1 as the start index for searching the second slash:

str1.substring(str1.indexOf('/',str1.indexOf('/')));