File sampleFile = new File(sampFilePath);
FileReader sampReader = new FileReader(sampleFile);
BufferedReader br = new BufferedReader(sampReader);
String sampledata=null;
StringBuilder sb = new StringBuilder();
while((sampledata = br.readLine( )) != null) {
    sb.append(sampledata + "\n");
}
sampReader.close();
String fullString = sb.toString();
System.out.println(fullString);