Java FileInputStream Copy copyFile(File src, File dest)

Description

copy File

License

Apache License

Declaration

public static void copyFile(File src, File dest) throws IOException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class Main {
    public static void copyFile(File src, File dest) throws IOException {
        byte[] bytes = readFile(src);
        createFile(bytes, dest);//from   w  w w .ja v a 2 s. c  o  m
    }

    public static byte[] readFile(File file) throws IOException {
        int length = (int) file.length();
        FileInputStream fis = new FileInputStream(file);
        byte[] result = new byte[length];
        int pos = 0;
        while (pos < length) {
            pos += fis.read(result, pos, length - pos);
        }
        fis.close();
        return result;
    }

    public static void createFile(byte[] src, File outFile) throws IOException {
        FileOutputStream fout = new FileOutputStream(outFile);
        fout.write(src);
        fout.close();
    }

    public static void createFile(String src, File outFile) throws IOException {
        createParentDirs(outFile);
        createFile(src.getBytes(), outFile);
    }

    public static void createParentDirs(File file) {
        String prefix = file.getAbsolutePath().substring(0, file.getAbsolutePath().lastIndexOf(File.separator));
        new File(prefix).mkdirs();
    }
}

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