Would anyone be able to assist?

Example 1:

// 1. What are the following import statements for?

// 2. Why do we need each one?

import javax.swing.*;                          // Why do we need this?
import java.awt.*;                               // Why do we need this?
import java.awt.event.*;                     // Why do we need this?
import java.util.*;                                // Why do we need this?
import java.math.*;                             // Why do we need this?

Example 2:

// Test field

// 1. What is a JLabel?

// 2. How do you create a JLabel?

// 3. What does “SwingConstants.RIGHT” mean?
t1L = new JLabel("Test score 1: ", SwingConstants.RIGHT);
t2L = new JLabel("Test score 2: ", SwingConstants.RIGHT);
t3L = new JLabel("Test score 3: ", SwingConstants.RIGHT);
t4L = new JLabel("Test score 4: ", SwingConstants.RIGHT);

Example 3:

// Text field

// 1. What is a JTextField?

// 2. How do you create a JTextField?

// 3. What does “setHorizontalAlignment(JTextField.CENTER);” mean?

t1TF = new JTextField(“0”, 5);
t1TF.setHorizontalAlignment(JTextField.CENTER);
t2TF = new JTextField(“0”, 5);
t2TF.setHorizontalAlignment(JTextField.CENTER);
t3TF = new JTextField(“0”, 5);
t3TF.setHorizontalAlignment(JTextField.CENTER);
t4TF = new JTextField(“0”, 5);
t4TF.setHorizontalAlignment(JTextField.CENTER);

 Example 4:

// Calc button.

// 1. What is a JButton?

// 2. How do you create a JButton?

// 3. What is a CalculateButtonHandler()?

// 4. How do you create a CalculateButtonHandler()?

// 5. What is an ActionListener? Where is it in our textbook?
 calculateB = new JButton("Calculate");
 cbHandler = new CalculateButtonHandler();
 calculateB.addActionListener(cbHandler);

ComputerScienceExpert

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Status NEW Posted 27 May 2017 05:05 AM My Price 8.00

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