InputStream to String using Java

public String stringValue(InputStream inputStream) {
BufferedReader br = null;
StringBuffer buffer = null;
try {
br = new BufferedReader(new InputStreamReader(inputStream));
String line = null;
buffer = new StringBuffer();
while ((line = br.readLine()) != null) {
buffer.append(line);
}
return buffer.toString();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (br != null)
try {
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return buffer.toString();
}