import java.io.*;
import java.util.*;

public class ReadProperty{
	String str, key;
	public static void main(String[] args) {
		ReadProperty r = new ReadProperty();
	}
	public ReadProperty(){
		try{
			int check = 0;
			while(check == 0){
				check = 1;
				BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
				System.out.print("Enter file name which has properties extension :");
				str = bf.readLine();
				File f = new File(str + ".properties");
				if(f.exists()){
					Properties pro = new Properties();
					FileInputStream in = new FileInputStream(f);
					pro.load(in);
					System.out.println("All key are given: " + pro.keySet());
					System.out.print("Enter Key : ");
					key = bf.readLine();
					String p = pro.getProperty(key);
					System.out.println(key + " : " + p);
				}
				else{
					check = 0;
					System.out.println("File not found!");
				}
			}
		}
		catch(IOException e){
		System.out.println(e.getMessage());
		}
	}
}