Question

fill in the blanks with java code

The following code implements a Java timer that looks like the application below. . Once the application starts it keeps counting seconds until it is terminated. Timer (sec): 20 You are given a partial implementation of the program. Fill out the missing code to complete the program. import java.awt.*; import java.awt.event.; import java.util."; import javax.swing. *; import javax.swing. Timer; * This program shows a timer that is updated once per second. public class JavaTimer private static int numSeconds = 0; private static void createAndShowGUI() { JFrame frame - 1 Create a textfield of width 20 characters final int FIELD_WIDTH = 20; Final TextField textField =

Answer 1

Solution => Please do comment in case of any query.

1. Set a flow layout to a frame

JFrame frame = new JFrame(""); frame.setLayout(new FlowLayout());

2. Add the textfield to the frame.

//JTextField textfield = new JTextField( );

  frame.add(textfield);

3 and 4

Implement Action Listener

ActionListener listener = new ActionListener() { public void actionPerformed(ActionEvent evt) { //code.... } };

5

Make it visible

 frame.setVisible(true);

6.

SwingUtilities.invokeLater(new Runnable() {                       @Override                       public void run() {                                             createAndShowGUI();                     }                                       });

Thanks.