Sort an array of String based on a name pattern

Question

I want to sort an array of strings by whether they contain a custom pattern or not.

I have tried custom sort using comparator, but they all sort based on ascending or descending order. My requirement is as follows:

String[] strArr = { "maven", "maven_apache", "java", "multithreading", "java_stream" };
String patternToMatch = "java";

Then output should be a sorted array with strings containing the pattern java first, followed by the others:

String[] strArr = { "java", "java_stream", "maven", "maven_apache", "multithreading" };

Answer 1

As simple as defining a Comparator and sorting the elements based on it:

Arrays.sort(strArr, Comparator.comparing(x -> !x.startsWith("java")));