Java BufferedReader Copy copyFile(File original, File copy)

Description

This method copies the provided file.

License

Open Source License

Parameter

Parameter	Description
original	File that is the original file.
copy	File that is the copy of the original file.

Exception

Parameter	Description
Exception	an exception

Declaration

public static void copyFile(File original, File copy) throws Exception 

Method Source Code

//package com.java2s;
/**/*  w w w.j a v a2 s  . com*/
* Hub Miner: a hubness-aware machine learning experimentation library.
* Copyright (C) 2014  Nenad Tomasev. Email: nenad.tomasev at gmail.com
* 
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
* 
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Stack;

public class Main {
    /**
     * This method copies the provided file.
     *
     * @param original File that is the original file.
     * @param copy File that is the copy of the original file.
     * @throws Exception
     */
    public static void copyFile(File original, File copy) throws Exception {
        if (!original.exists()) {
            return;
        }
        createFile(copy);
        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(original)));
        PrintWriter pw = new PrintWriter(new FileWriter(copy));
        try {
            String line = br.readLine();
            while (line != null) {
                pw.println(line);
                line = br.readLine();
            }
        } catch (Exception e) {
            System.err.println(e.getMessage());
            throw e;
        } finally {
            br.close();
            pw.close();
        }
    }

    /**
     * Creates the target file, regardless of whether its parent directories
     * exist. It creates them if they don't.
     *
     * @param targetFile File that is the target to create.
     * @throws IOException
     */
    public static void createFile(File targetFile) throws IOException {
        if (!targetFile.exists()) {
            File targetParent;
            Stack parents = new Stack();
            targetParent = targetFile.getParentFile();
            while (targetParent != null) {
                parents.push(targetParent);
                targetParent = targetParent.getParentFile();
            }
            while (!parents.empty()) {
                targetParent = (File) parents.pop();
                if (!targetParent.exists()) {
                    targetParent.mkdir();
                }
            }
            targetFile.createNewFile();
        } else {
            targetFile.delete();
            targetFile.createNewFile();
        }
    }
}

Related

1. copyFile(BufferedReader in, BufferedWriter out)
2. copyFile(File from, File to)
3. copyFile(File orgFile, File dstFile)
4. copyFile(File source, File dest)
5. copyFile(File src, File dst)
6. copyFile(String orig, String dest)
7. copyFile(String source, String dest)