Here you can find the source of toBytes(final String str)
public static byte[] toBytes(final String str)
//package com.java2s; /*// w w w . j a va 2 s. c om * 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.io.UnsupportedEncodingException; public class Main { public static final String CHARSET_NAME_UTF8 = "UTF-8"; public static byte[] toBytes(final String str) { if (str == null) { return null; } try { return str.getBytes(CHARSET_NAME_UTF8); } catch (final UnsupportedEncodingException e) { throw new RuntimeException(e.getMessage(), e); } } }