Java Utililty Methods File to String

InputStream is = ClassLoader.getSystemResourceAsStream(path);
InputStreamReader inputStreamREader = null;
BufferedReader br = null;
StringBuilder sb = new StringBuilder();
try {
    inputStreamREader = new InputStreamReader(is);
    br = new BufferedReader(inputStreamREader);
    String content = br.readLine();
...

StringBuffer sb = new StringBuffer();
InputStream in = new FileInputStream(path);
BufferedReader reader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
String line = "";
while ((line = reader.readLine()) != null) {
    line = line.trim();
    if (line == null || "".equals(line)) {
        continue;
...