Question

How to match Upper Cased Characters with Lower Cased Characters without using ToUpper/ToLower, is that possible?

Example:

String content = "are";
String keyword = "ARE";
if(content==keyword ){
    System.out.println("Working!");
}else{
    System.out.println("Not Working!");
}

The code above will print Not Working!.

Example 2:

String content = "how are you?";
String keyword = "ARE";
if(content.matches("(.*)(\\b)"+keyword+"(\\b)(.*)"))){
    System.out.println("Working!");
}else{
    System.out.println("Not Working!");
}

Answer 1

Rule 1: Use string1.equals(string2) instead of string1 == string2 to compare strings.

You’ll find .equalsIgnoreCase(...) for your purpose.