Java - finalizar programa al escribir *

import java.util.Scanner;

public class Ejercicio1_5{

	public static void main(String[] args){

		Scanner teclado=new Scanner(System.in);

		char c='*';

		String cadena="";

		while((cadena.indexOf(c)==-1)){

			cadena=teclado.nextLine();

		}

		System.out.println(cadena);

	}

}

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

String line = "";

while (line.equals("*") == false) {

    line = in.readLine();

}

in.close();