java.lang.Character.isDefined(int codePoint) java.lang.Character.isDefined(char ch) java.lang.Character.isDigit(char ch) java.lang.Character.isDefined(int codePoint) package com.codingdict; import java.lang.*; public class CharacterDemo { public static void main(String[] args) { // create a int primitive cp int cp; // assign values to cp cp = 0x012345; // create a boolean primitives b boolean b; // assign isDefined result of cp to b b = Character.isDefined(cp); String str = "cp has defined meaning in Unicode is " + b; // print b value System.out.println( str ); } } java.lang.Character.isDefined(char ch) java.lang.Character.isDigit(char ch)