Java Character toUpperCase() Method Tutorial

In this section, we will learn what the Character toUpperCase() method is and how to use it in Java.

What is Java Character toUpperCase() Method?

The `toUpperCase()` method is used to return the uppercased letter of the character that we set as the argument of the method.

Java toUpperCase() Method Syntax:

static char toUpperCase(char ch)

toUpperCase() Method Parameters:

The method takes one argument, and that is the character we want to uppercase.

toUpperCase() Method Return Value:

The return value of this method is the uppercase version of the character that we set as its argument.

Note: if the character is already an uppercase one, this method will return that with no changes.

Also, the type of the character is “char”.

Example: using Character toUpperCase() method

public class Simple {

    public static void main(String args[]) {

       String  s = "You Never Know What Will Happen Tomorrow!";
       char[] chars = new char[s.length()];
       int i = 0;
       for (char c: s.toCharArray()){
           chars[i] = Character.toUpperCase(c);
           i++;
       }
       String res = String.valueOf(chars);
        System.out.println(res);
    }
}

Output:

YOU NEVER KNOW WHAT WILL HAPPEN TOMORROW!

 

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