import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;
 
public class test{ 
public static void main(String[] args) {
	 java.util.Scanner scanner = new Scanner(System.in);
	 System.out.println("Introduce una cadena de texto a buscar: ");
	 String request = scanner.next();
	 	try {
			final BufferedReader reader = new BufferedReader(new FileReader("PATH"));
			String line = "";
			while((line = reader.readLine())!= null){
				if(line.indexOf(request)!= -1){
					System.out.println(""+line);
				}
			}reader.close();
	 	} catch (FileNotFoundException e) {e.printStackTrace();
		} catch (IOException           e) {e.printStackTrace();
		}
	}
}