Convert char to uppercase java

You can use Charater class’s touppercase method to convert char to uppercase in java.

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Method signature

public static char touppercase(char ch)

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Parameters

ch is primitive character type.

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Return type

return type is char. If char is already uppercase then it will return same.

package org.arpit.java2blog;

public class JavaToUpperCaseMain {

public static void main(String[] args) {

      System.out.println(Character.toUpperCase('a'));
      System.out.println(Character.toUpperCase('Y'));
      System.out.println(Character.toUpperCase('f'));
      System.out.println(Character.toUpperCase('u'));

   }

}

When you run above program, you will get below output:

That’s all about how to convert char to uppercase in java.