14 May String toUpperCase() method in Java

The toUpperCase()  method in Java converts all of the characters in this String to upper case using the rules of the default locale.

Syntax

Let us see the syntax,

String toUpperCase()

Parameters

The method has no parameters.

Example

The following is an example of toUpperCase(),

import java.util.*;

public class StudyopediaDemo {

   public static void main(String args[]) {
	 
      String message1 = new String("Studyopedia provides free learning content!");
      System.out.println("String: "+message1);

      String message2 = new String("STUDYOPEDIA provides free learning content!");
      System.out.println("String: "+message2);
	 
      System.out.print("Result = ");
      System.out.println(message1.toUpperCase());
	  
      System.out.print("Result = ");
      System.out.println(message2.toUpperCase());
  } 
}

Output

The following is the output,