Java How to Program, Early Objects, 11th Edition

... line1 = String.format("Key typed: %s", event.getKeyChar());
53         setLines2and3(event); // set output lines two and three
54      }
55
56      // set second and third lines of output
57      private void setLines2and3(KeyEvent event)
58      {
59         line2 = String.format("This key is %san action key",
60           (event.isActionKey() ? "" : "not "));
61
62         String temp = KeyEvent.getKeyModifiersText(event.getModifiers());
63
64         line3 = String.format("Modifier keys pressed: %s",
65            (temp.equals("") ? "none" : temp)); // output modifiers
66
67         textArea.setText(String.format("%s\n%s\n%s\n",
68            line1, line2, line3)); // output three lines of text
69      }
70   }

Fig. 26.37 Testing KeyDemoFrame.

 1   // Fig. 26.37: KeyDemo.java
 2   // Testing KeyDemoFrame.
 3   import javax.swing.JFrame;
 4
 5