Here you can find the source of isLatinString(final String str)
public static boolean isLatinString(final String str)
//package com.java2s; /******************************************************************************* * Copyright (c) 2016, 2017 Trig Chen.//ww w .jav a2 s.c o m * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Trig Chen - initial API and implementation *******************************************************************************/ import java.io.UnsupportedEncodingException; public class Main { public static boolean isLatinString(final String str) { try { return str.equals(new String(str.getBytes("ISO-8859-1"), "ISO-8859-1")); } catch (final UnsupportedEncodingException e) { return false; } } }