Java.lang.Character.isValidCodePoint() Method



The java.lang.Character.isValidCodePoint(int codePoint) determines whether the specified code point is a valid Unicode code point value.


Following is the declaration for java.lang.Character.isValidCodePoint() method

public static boolean isValidCodePoint(int codePoint)


codePoint − the Unicode code point to be tested

Return Value

This method returns true if the specified code point value is between MIN_CODE_POINT and MAX_CODE_POINT inclusive, false otherwise.




The following example shows the usage of lang.Character.isValidCodePoint() method.

package com.tutorialspoint;

import java.lang.*;

public class CharacterDemo {

   public static void main(String[] args) {

      // create 2 int primitives cp1, cp2
      int cp1, cp2;

      // assign values to cp1, cp2
      cp1 = 0x0123;
      cp2 = 0x123fff;

      // create 2 boolean primitives b1, b2
      boolean b1, b2;

       *  check if cp1, cp2 are valid Unicode code points 
       *  and assign results to b1, b2
      b1 = Character.isValidCodePoint(cp1);
      b2 = Character.isValidCodePoint(cp2);

      String str1 = "cp1 is a valid Unicode code point is " + b1;
      String str2 = "cp2 is a valid Unicode code point is " + b2;

      // print b1, b2 values
      System.out.println( str1 );
      System.out.println( str2 );

Let us compile and run the above program, this will produce the following result −

cp1 is a valid Unicode code point is true
cp2 is a valid Unicode code point is false