import java.io.FileDescriptor;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.LineNumberReader;
import java.util.Vector;

public class VectorEx1 {
	public static void main(String[] args) {
		LineNumberReader lnr;
		String line;
		Vector vec = new Vector();

		try {
			lnr = new LineNumberReader(new FileReader( FileDescriptor.in ) );

			while ( (line = lnr.readLine()).compareTo("exit")!=0 ) {
				vec.add(line);
			} //while
			lnr.close();

			for (int i=0; i<vec.size(); i++)
				System.out.println("element no. "+i+": "+vec.get(i) );
		} catch (FileNotFoundException fnfe) {
			System.out.println("cannot find stdin!");
		} catch (IOException ioe) {
			System.out.println("an IOException occurred\n+"+ioe.toString()+"\n"+ioe.getMessage() );
		} //catch
	} //main()
} //class VectorEx1