convert file to string

public static String readFile(String filePath){
BufferedReader br = null;
FileReader fr = null;
StringBuilder sb = new StringBuilder();
try {
fr = new FileReader(filePath);
br = new BufferedReader(fr);
String sCurrentLine;
br = new BufferedReader(new FileReader(filePath));
while ((sCurrentLine = br.readLine()) != null) {
sb.append(sCurrentLine);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (br != null)
br.close();
if (fr != null)
fr.close();

} catch (IOException ex) {
ex.printStackTrace();
}
}
return sb.toString();
}