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The java.lang.Character.isSupplementaryCodePoint(int codePoint) is an inbuilt method in java that determines whether the specified character (Unicode code point) is in the supplementary character range. Syntax:

public static boolean isSupplementaryCodePoint(int codePoint)

Parameters: The codePoint of integer type refers to the character (Unicode code point) that is to be tested. Return Value: This method returns true if the specified code point is between MIN_SUPPLEMENTARY_CODE_POINT and MAX_CODE_POINT inclusive, false otherwise. Below programs illustrate the Character.isSupplementaryCodePoint() method: Program 1:

Java

// Code to illustrate the isSupplementaryCodePoint() method
import java.lang.*;

public class gfg {

    public static void main(String[] args)
    {

        // Create 2 int primitives c1, c2 and assign values
        int c1 = 0x10ffd, c2 = 0x154ca;

        boolean bool1 = Character.isSupplementaryCodePoint(c1);
        boolean bool2 = Character.isSupplementaryCodePoint(c2);

        String str1 = "c1 represents a supplementary code point is " + bool1;
        String str2 = "c2 represents a supplementary code point is " + bool2;

        // Displaying the result
        System.out.println(str1);
        System.out.println(str2);
    }
}

Output:

c1 represents a supplementary code point is true
c2 represents a supplementary code point is true

Program 2:

Java

// Code to illustrate the isSupplementaryCodePoint() method
import java.lang.*;

public class gfg {

    public static void main(String[] args)
    {

        // Creates 2 int primitives c1, c2 and assign values
        int c1 = 0x45ffd, c2 = 0x004ca;

        boolean bool1 = Character.isSupplementaryCodePoint(c1);
        boolean bool2 = Character.isSupplementaryCodePoint(c2);

        String str1 = "c1 represents a supplementary code point is " + bool1;
        String str2 = "c2 represents a supplementary code point is " + bool2;
       
        // Displaying the result
        System.out.println(str1);
        System.out.println(str2);
    }
}

Output:

c1 represents a supplementary code point is true
c2 represents a supplementary code point is false

Reference: https://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#isSupplementaryCodePoint(int)

Character.isSupplementaryCodePoint() Method in Java

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