What is Character.isLowerCase() in Java?

The isLowerCase() function returns true if the character sent as a parameter is lowercase; otherwise, it returns false.

Figure 1 shows a visual representation of the isLowerCase() function.

Figure 1: Visual representation of isLowerCase() function

Syntax

boolean isLowerCase(char character)

Parameter

The isLowerCase() function takes the character as a parameter.

Return value

The isLowerCase() function returns true if the character sent as a parameter is lowercase; otherwise, it returns false.

Code

class JAVA {
    public static void main( String args[] ) {
        //uppercase character
        System.out.println("Character.isLowerCase('E'):");
        System.out.println(Character.isLowerCase('E'));
        //lowercase character
        System.out.println("Character.isLowerCase('e'):");
        System.out.println(Character.isLowerCase('e'));
        //not a letter
        System.out.println("Character.isLowerCase('6'):");
        System.out.println(Character.isLowerCase('6'));
    }
}
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