Here you can find the source of isMessageEnglish(String msg)
public static boolean isMessageEnglish(String msg)
//package com.java2s; /*/*ww w . java 2s . co m*/ * Copyright 1999-2101 Alibaba Group. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * http://www.apache.org/licenses/LICENSE-2.0 * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.util.regex.Pattern; public class Main { public static boolean isMessageEnglish(String msg) { if (Pattern.matches("^[\\x00-\\x7F]*$", msg)) { return true; } else { return false; } } }