LabelTest.java

// Fig. 12.7: LabelTest.java
// JLabels with text and icons.
import java.awt.FlowLayout; // specifies how components are arranged
import javax.swing.JFrame; // provides basic window features
import javax.swing.JLabel; // displays text and images
import javax.swing.SwingConstants; // common constants used with Swing
import javax.swing.Icon; // interface used to manipulate images
import javax.swing.ImageIcon; // loads images

class LabelFrame extends JFrame 
{
   private final JLabel label1; // JLabel with just text
   private final JLabel label2; // JLabel constructed with text and icon
   private final JLabel label3; // JLabel with added text and icon

   // LabelFrame constructor adds JLabels to JFrame
   public LabelFrame()
   {
      super("Testing JLabel");
      setLayout(new FlowLayout()); // set frame layout

      // JLabel constructor with a string argument
      label1 = new JLabel("Label with text");
      label1.setToolTipText("This is label1");
      add(label1); // add label1 to JFrame

      // JLabel constructor with string, Icon and alignment arguments
      Icon bug = new ImageIcon(getClass().getResource("bug1.png"));
      label2 = new JLabel("Label with text and icon", bug, 
         SwingConstants.LEFT);
      label2.setToolTipText("This is label2");
      add(label2); // add label2 to JFrame

      label3 = new JLabel(); // JLabel constructor no arguments
      label3.setText("Label with icon and text at bottom");
      label3.setIcon(bug); // add icon to JLabel
      label3.setHorizontalTextPosition(SwingConstants.CENTER);
      label3.setVerticalTextPosition(SwingConstants.BOTTOM);
      label3.setToolTipText("This is label3");
      add(label3); // add label3 to JFrame
   } 
} // end class LabelFrame


public class LabelTest 
{
   public static void main(String[] args)
   { 
      LabelFrame labelFrame = new LabelFrame(); 
      labelFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      labelFrame.setSize(260, 180); 
      labelFrame.setVisible(true); 
   } 
} // end class LabelTest