Java Utililty Methods FileInputStream Copy

List of utility methods to do FileInputStream Copy

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Description

The list of methods to do FileInputStream Copy are organized into topic(s).

Method

voidcopyFileToDir(File oldFile, File outputDir)
Copies a file into a specified directory 
FileInputStream in = new FileInputStream(oldFile);
File destFile = new File(outputDir, oldFile.getName());
FileOutputStream out = new FileOutputStream(destFile);
copyStream(in, out);
in.close();
out.close();
destFile.setLastModified(oldFile.lastModified());
voidcopyFileToDir(File sourceFile, File destDir)
copy File To Dir 
FileInputStream in = new FileInputStream(sourceFile);
FileOutputStream out = new FileOutputStream(
        destDir.getAbsolutePath() + File.separator + sourceFile.getName());
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = in.read(buffer)) > -1) {
    out.write(buffer, 0, bytesRead);
out.flush();
out.close();
voidcopyFileToDir(String targetDir, String[] filePath)
Copy many files to one directory 
File targetFile = new File(targetDir);
if (!targetFile.exists()) {
    targetFile.mkdirs();
} else {
    if (!targetFile.isDirectory()) {
        return;
for (String path : filePath) {
    File file = new File(path);
    if (file.isDirectory()) {
        copyFileToDir(targetDir + File.separator + file.getName(), listFile(file));
    } else {
        copyFileToDir(targetDir, file);
voidCopyFileToDirectory(String file_name, String from_directory, String to_directory)
Copy File To Directory 
InputStream inStream = null;
OutputStream outStream = null;
try {
    File afile = new File(from_directory + "/" + file_name);
    File bfile = new File(to_directory + "/" + file_name);
    inStream = new FileInputStream(afile);
    outStream = new FileOutputStream(bfile);
    byte[] buffer = new byte[1024];
...
voidcopyFileToFile(File file, File destFile, boolean overwrite)
Copy a file to another file. 
if ((!overwrite) && destFile.isFile()) {
    throw new IllegalStateException("Destination file " + destFile + " already exists");
if (destFile.isDirectory()) {
    throw new IllegalStateException("Destination file is an existing directory");
try (FileInputStream in = new FileInputStream(file);
        FileOutputStream out = new FileOutputStream(destFile)) {
...
FilecopyFileToFile(File input, String outputPath, String exportName)
copy File To File 
File file = new File(outputPath, exportName);
try {
    DataOutputStream out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(file)));
    FileInputStream is = new FileInputStream(input);
    byte[] buf = new byte[1024];
    int len;
    while ((len = is.read(buf)) > 0) {
        out.write(buf, 0, len);
...
voidcopyFileToOutputStream(File file, OutputStream stream)
Write a file to an output stream 
copyInputStream(new FileInputStream(file), stream);
voidcopyFileToOutputStream(String fileLocation, OutputStream os)
copy File To Output Stream 
FileInputStream fis = new FileInputStream(fileLocation);
copyStream(fis, os);
voidcopyFileToStream(File currentFile, OutputStream outputStream)
copy File To Stream 
int read = 0;
byte[] buffer = new byte[8192];
FileInputStream in = new FileInputStream(currentFile);
while (-1 != (read = in.read(buffer))) {
    outputStream.write(buffer, 0, read);
in.close();
voidcopyFileToStream(File file, OutputStream stream)
Copies the data from file into the stream. 
FileInputStream input = new FileInputStream(file);
long longLength = file.length();
final int fiveMegabytes = 5 * 1024 * 1024;
while (longLength > 0) {
    int chunk = (int) Math.min(longLength, fiveMegabytes);
    byte[] data = new byte[chunk];
    input.read(data, 0, chunk);
    stream.write(data, 0, chunk);
...