Here you can find the source of writeFileToFile(File inFile, File toFile)
public static void writeFileToFile(File inFile, File toFile) throws IOException
//package com.java2s; /* Copyright 2009-2010 the original author or authors. * * 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./*from w w w .ja v a 2s . co m*/ */ import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; public class Main { public static void writeFileToFile(File inFile, File toFile) throws IOException { OutputStream os = null; InputStream is = null; try { is = new FileInputStream(inFile); os = new FileOutputStream(toFile); byte[] buffer = new byte[4096]; for (int n; (n = is.read(buffer)) != -1;) { os.write(buffer, 0, n); } } finally { if (os != null) { os.close(); } if (is != null) { is.close(); } } } }