Java.lang.String.toUpperCase() Method

Description

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

Declaration

Following is the declaration for java.lang.String.toUpperCase() method

public String toUpperCase()

Parameters

• NA

Return Value

This method returns the String, converted to uppercase.

Exception

• NA

Example

The following example shows the usage of java.lang.String.toUpperCase() method.

package com.tutorialspoint;

import java.lang.*;

public class StringDemo {

  public static void main(String[] args) {
  
    // converts all lower case letters in to upper case letters
    String str1 = "This is TutorialsPoint";
    System.out.println("string value = " + str1.toUpperCase());
    
    str1 = "www.tutorialspoint.com";
    System.out.println("string value = " + str1.toUpperCase());
  }
}

Let us compile and run the above program, this will produce the following result:

string value = THIS IS TUTORIALSPOINT
string value = WWW.TUTORIALSPOINT.COM