Try this . It worked for me .

import java.io.BufferedReader;

import java.io.DataInputStream;

import java.io.FileInputStream;

import java.io.InputStreamReader;

public class Sample {

public static void main(String[] args) {

try {

        FileInputStream fstream = new FileInputStream("C:\\java\\prop\\message.properties");
        DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
        String strLine;
        String key[] = null;
        // Read File Line By Line
        while ((strLine = br.readLine()) != null) {
            if (strLine.contains("=")) {
                key = strLine.split("=");
                System.out.println(key[0]);


            } else {
                System.out.println(strLine);
            }
        }
        in.close();
    } catch (Exception e) {
        System.err.println("Error: " + e.getMessage());
    }