Question

How to insert a space before capital letters in a string with Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        String str = "JavaIsAHighLevelClassBasedObjectOrientedProgrammingLanguage";
        
        str = Character.toUpperCase(str.charAt(0)) + str.substring(1).replaceAll("(?<!_)(?=[A-Z])", " ");

        System.out.println(str);
    }
}




/*
run:

Java Is A High Level Class Based Object Oriented Programming Language

*/

 

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