Here you can find the source of writeString(File file, String str)
public static void writeString(File file, String str) throws IOException
//package com.java2s; /* ************************************************************************** * * See the NOTICE file distributed with this work for additional information * regarding copyright ownership.//from w w w . j a v a 2 s. com * * This file is licensed to you 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.ByteArrayInputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; public class Main { public static void writeString(File file, String str) throws IOException { OutputStream output = new FileOutputStream(file); writeString(output, str); } public static void writeString(OutputStream out, String str) throws IOException { try { byte[] array = str.getBytes("UTF-8"); ByteArrayInputStream in = new ByteArrayInputStream(array); copy(in, out); } finally { out.close(); } } public static void copy(InputStream input, OutputStream output) throws IOException { try { try { byte[] buf = new byte[1024 * 10]; int len; while ((len = input.read(buf)) > 0) { output.write(buf, 0, len); } } finally { output.close(); } } finally { input.close(); } } }