Java Utililty Methods URL Copy

InputStream in = null;
OutputStream out = null;
try {
    in = fromUrl.openStream();
    out = new FileOutputStream(toFile);
    byte[] bytes = new byte[16384];
    while (true) {
        int bytesRead = in.read(bytes);
...

InputStream is = in.openStream();
OutputStream os = new FileOutputStream(out);
byte[] buffer = new byte[4096];
int len;
while ((len = is.read(buffer)) != -1) {
    os.write(buffer, 0, len);
os.close();
...

InputStream in = null;
FileOutputStream out = null;
try {
    in = source.openStream();
    out = new FileOutputStream(destination);
    int c;
    byte[] buffer = new byte[2048];
    int read = in.read(buffer);
...

URL u = new URL(url);
InputStream is = u.openStream();
copy_stream_to_file(is, filename);

byte[] buffer = new byte[4096];
InputStream inputStream = null;
FileOutputStream fileOutputStream = null;
try {
    File destFile = new File(destFilePath);
    fileOutputStream = new FileOutputStream(destFile);
    inputStream = url.openStream();
    int bytesRead = inputStream.read(buffer);
...

final URL url = new URL(query);
final InputStream in = url.openStream();
final OutputStream fous = new FileOutputStream(target);
final byte buff[] = new byte[0x3FF];
int sz = 0;
try {
    while ((sz = in.read(buff)) >= 0) {
        fous.write(buff, 0, sz);
...

if (url == null || localFile == null)
    return;
if (url.getFile() == "" || url.getFile() == null)
    return;
if (localFile.isDirectory()) {
    localFile = new File(localFile.getPath() + File.separator + url.getFile());
if (!localFile.exists()) {
...

if (from == null) {
    System.out.printf("Resource could not be copied to: %s%n", to);
    return;
System.out.printf("Copring resource: %s to: %s%n", from, to);
try {
    OutputStream fos = new BufferedOutputStream(new FileOutputStream(to));
    InputStream in = new BufferedInputStream(from.openStream());
...

if (resource == null) {
    throw new IllegalArgumentException("URL must not be null.");
if (destination == null) {
    throw new IllegalArgumentException("URL must not be null.");
try (InputStream inStream = resource.openStream()) {
    File parent = destination.getParentFile();
...

try {
    File temp = new File(destPath + fileName);
    if (temp.exists())
        return;
    URL url = new URL(sourceUrlPath + fileName);
    BufferedInputStream bis = new BufferedInputStream(url.openStream(), 10240);
    BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(destPath + fileName), 10240);
    byte[] buffer = new byte[1024];
...