The source code looks like:

import java.applet.*;
import java.awt.*;

public class TextFieldDemo extends Applet {

	public void init() {
		resize(200, 100);
		setLayout(new FlowLayout(FlowLayout.LEFT));
		add(new Label("Username: "));
		add(new TextField(30));
		add(new Label("Password: "));
		TextField passwordField = new TextField(30);
		passwordField.setEchoCharacter('¥');
		add(passwordField);
		
	}

}