java.lang.Character.offsetByCodePoints(CharSequence seq, int index, int codePointOffset) java.lang.Character.isWhitespace(int codePoint) java.lang.Character.reverseBytes(char ch) java.lang.Character.offsetByCodePoints(CharSequence seq, int index, int codePointOffset) package com.codingdict; import java.lang.*; public class CharacterDemo { public static void main(String[] args) { // create a CharSequence seq and assign value CharSequence seq = "Hello World"; // create an int primitive res int res; // assign result of offsetByCodePoints on seq to res res = Character.offsetByCodePoints(seq, 3, 8); String str = "The index within the char sequence seq is " + res; // print res value System.out.println( str ); } } java.lang.Character.isWhitespace(int codePoint) java.lang.Character.reverseBytes(char ch)