Java Utililty Methods URL Load

InputStream stream = null;
InputStreamReader reader = null;
try {
    stream = input.openStream();
    reader = new InputStreamReader(stream);
    return readStreamIntoString(reader);
} finally {
    if (reader != null)
...

final char[] buffer = new char[0x10000];
StringBuilder str = new StringBuilder();
Reader in = new InputStreamReader(url.openStream(), "UTF-8");
int read;
do {
    read = in.read(buffer, 0, buffer.length);
    if (read > 0) {
        str.append(buffer, 0, read);
...

try {
    final StringBuffer sb = new StringBuffer();
    final char buf[] = new char[4096];
    int numRead;
    final InputStreamReader isr = new InputStreamReader(fileName.openStream(), "utf-8");
    do {
        numRead = isr.read(buf, 0, buf.length);
        if (numRead > 0)
...

char[] chars = new char[4092];
InputStreamReader contentsReader = null;
StringBuffer buffer = new StringBuffer();
if (!new java.io.File(source.getFile()).exists()) {
    throw new FileNotFoundException(
            TemplateEngineMessages.getString("ProcessHelper.fileNotFound") + source.getFile()); 
} else {
    contentsReader = new InputStreamReader(source.openStream());
...

InputStream is = new URL(url).openStream();
StringBuilder sb = null;
try {
    BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
    String line;
    while ((line = br.readLine()) != null) {
        if (sb == null)
            sb = new StringBuilder();
...

return new Scanner(new URL(urlString).openStream(), "UTF-8").useDelimiter("\\A").next();

InputStream inputStream = null;
BufferedReader bufferedReader = null;
StringBuilder result = new StringBuilder();
try {
    if (urlText.startsWith("file://")) {
        urlText = urlText.replace("file://", "");
        try {
            inputStream = new FileInputStream(urlText);
...

InputStream is = url.openStream();
InputStreamReader inputStreamReader = new InputStreamReader(is, "UTF-8");
StringBuffer buffer = new StringBuffer();
char[] cbuf = new char[256];
int len;
do {
    len = inputStreamReader.read(cbuf);
    if (len > 0) {
...

ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[8192];
int i;
try (InputStream is = url.openStream()) {
    while ((i = is.read(buffer)) != -1) {
        baos.write(buffer, 0, i);
return baos.toByteArray();