Java contains multiple characters

Note that string contains() method is case sensitive , so “abc”. contains(“A”); will return false . The argument of String contains() method is java. lang.

Java String equalsIgnoreCase() Method The equalsIgnoreCase() method compares two strings, ignoring lower case and upper case differences. This method returns true if the strings are equal, and false if not. Tip: Use the compareToIgnoreCase() method to compare two strings lexicographically, ignoring case differences.

Yes, contains is case sensitive . You can use java. util.

Java String contains Ignore Case

use toUpperCase() or toLowerCase() method of String class . Show activity on this post. You ignore case when you treat the data, not when you retrieve/store it. If you want to store everything in lowercase use String#toLowerCase, in uppercase use String#toUpperCase.