Question 1 : 1.1 The default layout manager for JFrame class is_________________

Question

Question 1:

1.1 The default layout manager for JFrame class is_____________________.

1.2 The default layout manager for JPanel class is ____________________.

1.3 In order to create an action listener class, we must implement _________________interface and implement __________________method.

Question 2:

Assume we have created a button control, and we want to add it to the south area of the frame. Please implement it by using the add method of the frame.

          JButton btnSubmit = new JButton("Submit");

          JFrame frame = new JFrame();

          // add the btnSubmit to the south area of the frame.

Question 3:

Create a desktop application in which the user can enter 5 numbers, and once the button is clicked, the maximum number will be displayed in a message box.

Explanation / Answer

Dear,

1.1 The default layout manager for JFrame class is BorderLayout.

1.2 The default layout manager for JPanel class is FlowLayout.

1.3 In order to create an action listener class, we must implement ActionListener interface and implement actionPerformed method.

2.

         JPanel panel1 = new JPanel();//Creata a panel

         panel1.add(btnSubmit);//add button to panel

        add(panel1, BorderLayout.SOUTH);

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