ADDING MORE ITEMS

Now its time to have a bit of fun. Lets add some other items and play with the logic.

Add some of these to your application:

1. JTextField:

   • JTextField is constructed the same way as others. Create an instance of JTextField, and set it's parameters.

      public static JTextField textField;
     
      //Under main method:
      textField = new JTextField();
      textField.setBounds(20,140,200,40);
     
      frame.add(textField);
     

   • You can get the text from your box as follows

      textField.getText();
     

   • ".getText" returns a String to be used however you like.

   • DIY: Try having your button print the text in your JTextField to console.

2. JCheckBox:

   • Again, constructed the same way.

      public static JCheckBox checkBox;
     
      //Under main method:
      checkBox = new JCheckBox();
      checkBox.setBounds(20,180,200,40);
     
      frame.add(checkBox);
     

   • You can find if the box is selected in two ways.

      if(checkBox.isSelected()){
          // Do Something
      }
     

     or

      checkBox.addActionListener(new ActionListener() {
     
        @Override
        public void actionPerformed(ActionEvent e) {
              //Do Something
        }
     
      });
     

   • DIY: Have your checkbox change the color of the button. You can change the buttons color with the following:

       button.setBackgroundColor(Color.RED);
     

     *Note - setting color to null sets back to default.

3. JLabel:

   • Labels are your standard text objects.

   • Constructed the same way. JLabel takes a String argument.

     public static JLabel label;
     
     //Under main method:
     label = new JLabel("Hello World!");
     label.setBounds(20,220,200,40);
     
     frame.add(label);
     

   • A label can be set by the following:

     label.setText("Some new text here!");
     

   • You can set the font like this:

     label.setFont(new Font("Comic Sans MS", Font.BOLD, 16));
     

   • DIY: Have your button, when pressed, set the label to the contents of your textField.

4. HAVE FUN: Have fun with your app. Make your button change position on click. Or change the colors of your objects. Experiment :D