Java Utililty Methods InputStreamReader Read

List<File> files = new ArrayList<File>();
String path = file.getParentFile().getAbsolutePath();
BufferedReader content = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
String line = content.readLine();
while (line != null) {
    files.add(new File(path + "/" + line));
    line = content.readLine();
return files;

File f = new File(filename);
if (!f.exists())
    return null;
FileInputStream fis = null;
InputStreamReader fsr = null;
BufferedReader reader1 = null;
String line;
try {
...

Stream<Function<String, InputStream>> suppliers = Stream.of((path) -> {
    try {
        return new FileInputStream(path);
    } catch (FileNotFoundException e) {
        return null;
}, (path) -> Thread.currentThread().getContextClassLoader()
        .getResourceAsStream("org/openqa/grid/common/" + path),
...

StringBuffer buffer = new StringBuffer();
for (String pathname : files) {
    File file = new File(pathname);
    buffer.append(readFile(file, encoding));
return buffer.toString();

InputStream in = new FileInputStream(f);
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuffer sb = new StringBuffer();
try {
    readFile(reader, sb);
} finally {
    reader.close();
return sb;

BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
ArrayList<String> lines = new ArrayList<>();
String line;
while ((line = reader.readLine()) != null) {
    lines.add(line);
return lines;

List<String> list = new ArrayList<String>();
try {
    BufferedReader reader = new BufferedReader(
            new InputStreamReader(new FileInputStream(fileName), codeing));
    String data = null;
    do {
        data = reader.readLine();
        if (data == null)
...

if (fileEncoding == null) {
    fileEncoding = "utf-8";
File file = new File(filePath);
BufferedReader br = null;
String line = null;
Set<String> lineSet = new HashSet<String>();
try {
...

if (file.isAccessible()) {
    InputStream inputStream = file.getContents(true);
    try {
        return readStringUtf8(inputStream);
    } finally {
        inputStream.close();
return null;

InputStream contents = in.getContents();
return readStream(contents);