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:
// Code to illustrate the isSupplementaryCodePoint() methodimport 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:
// Code to illustrate the isSupplementaryCodePoint() methodimport 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)
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