Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

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

public class Main {
    public static boolean copyFilesTo(File srcDir, File destDir) throws IOException {
        if (srcDir == null || destDir == null) {
            return false;
        }

        if (!srcDir.exists()) {
            return false;
        }
        if (!destDir.exists()) {
            createFolder(destDir.getAbsolutePath());
        }

        if (!srcDir.isDirectory() || !destDir.isDirectory())
            return false;

        File[] srcFiles = srcDir.listFiles();
        for (int i = 0; i < srcFiles.length; i++) {
            if (srcFiles[i].isFile()) {
                File destFile = new File(destDir.getPath() + "//" + srcFiles[i].getName());
                copyFileTo(srcFiles[i], destFile);
            } else if (srcFiles[i].isDirectory()) {
                File theDestDir = new File(destDir.getPath() + "//" + srcFiles[i].getName());
                copyFilesTo(srcFiles[i], theDestDir);
            }
        }
        return true;
    }

    public static File createFolder(String path) {
        if (notEmptyOrNull(path)) {
            File dir = new File(path);
            if (dir.exists()) {
                if (dir.isDirectory()) {
                    return dir;
                }
            }
            dir.mkdirs();
            return dir;
        } else {
            return null;
        }
    }

    public static boolean copyFileTo(File srcFile, File destFile) throws IOException {
        if (srcFile == null || destFile == null) {
            return false;
        }
        if (srcFile.isDirectory() || destFile.isDirectory())
            return false;
        if (!srcFile.exists()) {
            return false;
        }
        if (!destFile.exists()) {
            createFile(destFile.getAbsolutePath());
        }
        FileInputStream fis = new FileInputStream(srcFile);
        FileOutputStream fos = new FileOutputStream(destFile);
        int readLen = 0;
        byte[] buf = new byte[1024];
        while ((readLen = fis.read(buf)) != -1) {
            fos.write(buf, 0, readLen);
        }
        fos.flush();
        fos.close();
        fis.close();
        return true;
    }

    public static boolean copyFileTo(InputStream inputStream, File destFile) throws IOException {
        if (inputStream == null || destFile == null) {
            return false;
        }
        if (destFile.isDirectory())
            return false;

        if (!destFile.exists()) {
            createFile(destFile.getAbsolutePath());
        }
        FileOutputStream fos = new FileOutputStream(destFile);
        int readLen = 0;
        byte[] buf = new byte[1024];
        while ((readLen = inputStream.read(buf)) != -1) {
            fos.write(buf, 0, readLen);
        }
        fos.flush();
        fos.close();
        inputStream.close();
        return true;
    }

    public static boolean notEmptyOrNull(String string) {
        if (string != null && !string.equalsIgnoreCase("null") && string.trim().length() > 0) {
            return true;
        } else {
            return false;
        }
    }

    public static File createFile(String path) throws IOException {
        if (notEmptyOrNull(path)) {
            File file = new File(path);
            if (!file.exists()) {
                int lastIndex = path.lastIndexOf(File.separator);
                String dir = path.substring(0, lastIndex);
                if (createFolder(dir) != null) {
                    file.createNewFile();
                    return file;
                }
            } else {
                file.createNewFile();
                return file;
            }
        }
        return null;
    }
}