How to Check if String contains Substring in Java

Question – How do I check If a String contains another substring in Java? In our previous article, you learned to compare two strings in Java programming language. This tutorial will help you to check if the main string contains another substring in it.

Syntax

Example 1 – Check with Case Sensitive

This will be case sensitive check. As per the below example, Welcome is different than welcome as we know java is a case sensitive programming language.

Example 2 – Check with Ignoring Case

Using this string will be checked with ignoring the case. The function change string to lower case and check if one string contains another case.