java.lang.Character isSupplementaryCodePoint(int codePoint)


The Character.isSupplementaryCodePoint(int codePoint) java method determines whether the character is mirrored according to the Unicode specification. Mirrored characters should have their glyphs horizontally mirrored when displayed in text that is right-to-left. For example, ‘u0028’ LEFT PARENTHESIS is semantically defined to be an opening parenthesis. This will appear as a “(” in text that is left-to-right but as a “)” in text that is right-to-left.

The isSupplementaryCodePoint(int codePoint) method of Character class is static thus it should be accessed statically which means the we would be calling this method in this format:

Character.isSupplementaryCodePoint(int codePoint)

Non static method is usually called by just declaring method_name(argument) however in this case since the method is static, it should be called by appending the class name as suffix. We will be encountering a compilation problem if we call the java isSupplementaryCodePoint() method non statically.

Method Syntax

public static boolean isSupplementaryCodePoint(int codePoint)

Method Argument

Data Type Parameter Description
int codePoint the character (Unicode code point) to be tested

Method Returns

The isSupplementaryCodePoint(int codePoint) method of Character class returns true if the specified code point is between MIN_SUPPLEMENTARY_CODE_POINT and MAX_CODE_POINT inclusive; false otherwise.


Requires Java 1.5 and up

Java Character isSupplementaryCodePoint(int codePoint) Example

Below is a simple java example on the usage of isSupplementaryCodePoint(int codePoint) method of Character class.


 * This example source code demonstrates the use of 
 * isSupplementaryCodePoint(int codePoint) method of Character class.

public class CharacterIsSupplementaryCodePointExample {

	public static void main(String[] args) {
		// initialize codepoints
		int codepoint1 = 12;
		int codepoint2 = 75492;
		// check the codepoints if it is in the supplementary character range
		boolean result1 = Character.isSupplementaryCodePoint(codepoint1);
		boolean result2 = Character.isSupplementaryCodePoint(codepoint2);
		// print the result
		System.out.println("Is codepoint "+codepoint1 +
				" is in the supplementary character range?"+result1);
		System.out.println("Is codepoint "+codepoint2 +
				" is in the supplementary character range?"+result2);

		// for readers reference
		// print the range of supplementary codepoint
		System.out.println("Minimum Supplementary codepoint:" 
		System.out.println("Maximum Supplementary codepoint:" 
				+ Character.MAX_CODE_POINT);


Sample Output

Below is the sample output when you run the above example.

java Character isSupplementaryCodePoint(int codePoint) example output