java.lang.Character.codePointAt(char[ ] a, int index, int limit) Java.lang.Character.codePointAt() 方法 java.lang.Character.codePointAt(CharSequence seq, int index) java.lang.Character.codePointAt(char[ ] a, int index, int limit) package com.codingdict; import java.lang.*; public class CharacterDemo { public static void main(String[] args) { // create a char array c and assign values char[] c = new char[] { 'a', 'b', 'c', 'd', 'e' }; // create and assign value to inetgers index, limit int index = 1, limit = 3; // create an int res int res; // assign result of codePointAt on array c at index to res using limit res = Character.codePointAt(c, index, limit); String str = "Unicode code point is " + res; // print res value System.out.println( str ); } } Java.lang.Character.codePointAt() 方法 java.lang.Character.codePointAt(CharSequence seq, int index)