How do you convert a lowercase character to uppercase in Java?

Java isUpperCase(char ch) method is a part of Character class. This method is used to check whether the specified character is an uppercase character or not . This method does not support supplementary characters. A character is uppercase if its general category type, provided by Character.

Change character case

Change character case

The java. lang. Character. toLowerCase(char ch) converts the character argument to lowercase using case mapping information from the UnicodeData file.

Java isUpperCase(char ch) method is a part of Character class. This method is used to check whether the specified character is an uppercase character or not . This method does not support supplementary characters. A character is uppercase if its general category type, provided by Character.

To check whether a character is in Uppercase or not in Java, use the Character. isUpperCase() method .

To check whether a character is in Uppercase or not in Java, use the Character. isUpperCase() method .