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For example, you could provide gray versions of the images used in the left and right buttons. However, you could provide an image to be substituted for the normal image. When a button is disabled, the look and feel automatically generates the button's disabled appearance. For example, Alt-M would click the Middle button in ButtonDemo. In most look and feels, the user can click a button by pressing the Alt key and the mnemonic. The underlined letter in each button's text shows the mnemonic — the keyboard alternative — for each button. In ButtonDemo, each button has its text in a different place, relative to its image.

It enables the middle button and the left button, and disables itself.Īs the ButtonDemo example shows, a Swing button can display both text and an image. It disables the middle button (and itself, since it is no longer useful) and enables the right button. Alternatively, to compile and run the example yourself, consult the example index. Java™ Web Start ( download JDK 7 or later). Click the Launch button to run the Button Demo using.