Java Utililty Methods FileInputStream Copy

InputStream inputStream = null;
FileOutputStream fileOutputStream = null;
try {
    int byteRead;
    File srcFile = new File(srcPath);
    File dstFile = new File(dstPath);
    if (dstFile.exists() && !replace) {
        return false;
...

try {
    File f1 = new File(srFile);
    File f2 = new File(dtFile);
    InputStream in = new FileInputStream(f1);
    OutputStream out = new FileOutputStream(f2);
    byte[] buf = new byte[1024];
    int len;
    while ((len = in.read(buf)) > 0) {
...

try {
    File f1 = new File(srFile);
    File f2 = new File(dtFile);
    copyFile(f1, f2);
} catch (FileNotFoundException ex) {
    System.out.println(ex.getMessage() + " in the specified directory.");
    System.exit(0);
} catch (IOException e) {
...

boolean ok = false;
try {
    File f1 = new File(srFile);
    File f2 = new File(dtFile);
    InputStream in = new FileInputStream(f1);
    OutputStream out = new FileOutputStream(f2);
    byte[] buf = new byte[1024];
    int len;
...

try {
    File srFile = new File(srFilePath);
    File dtFile = new File(dtFilePath);
    InputStream in = new FileInputStream(srFile);
    OutputStream out = new FileOutputStream(dtFile);
    byte[] buf = new byte[1024];
    int len;
    while ((len = in.read(buf)) > 0) {
...

byte[] bytes = getFileInBytes(source);
try {
    writeBytes(bytes, target);
} catch (IOException e) {
    e.printStackTrace();

(new File(destPath)).mkdirs();
File file = new File(srcPath + srcFile);
if (file.exists()) {
    FileInputStream input = new FileInputStream(file);
    FileOutputStream output = new FileOutputStream(destPath + "/" + destFile);
    byte[] b = new byte[1024 * 5];
    int len;
    while ((len = input.read(b)) != -1) {
...

FileInputStream fis = new FileInputStream(srcFilePathName);
FileOutputStream fos = new FileOutputStream(dstFilePathName);
byte[] buf = new byte[1024];
int i = 0;
while ((i = fis.read(buf)) != -1) {
    fos.write(buf, 0, i);
fis.close();
...

boolean deltas = (targetFile.lastModified() != sourceFile.lastModified());
if (!deltas) {
    deltas = deltas || (targetFile.length() != sourceFile.length());
if (deltas) {
    if (!targetFile.exists()) {
        File parentDir = targetFile.getParentFile();
        if (!parentDir.isDirectory()) {
...

FileInputStream readSource = new FileInputStream(source);
FileOutputStream outputDestination = new FileOutputStream(destination);
byte read[] = new byte[1024];
int count = 0;
while ((count = readSource.read(read, 0, 1024)) != -1) {
    outputDestination.write(read, 0, count);
outputDestination.flush();
...