Here you can find the source of copyFile(File src, File destination)
public static void copyFile(File src, File destination) throws IOException
//package com.java2s; /*/*from w w w .ja va2 s.c o m*/ * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file 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.*; import java.nio.channels.FileChannel; public class Main { public static void copyFile(File src, File destination) throws IOException { FileChannel in = null; FileChannel out = null; try { in = new FileInputStream(src).getChannel(); out = new FileOutputStream(destination).getChannel(); in.transferTo(0, in.size(), out); } finally { try { if (in != null) in.close(); } catch (IOException e) { } try { if (out != null) out.close(); } catch (IOException e) { } } } }