Building graphical user interfaces - Objects First with Java: A Practical Introduction Using BlueJ - page 412

Concept summary

■ components A GUI is built by arranging components on screen. Components are

represented by objects.

■ layout Arranging the layout of components is achieved by using layout managers.

■ event handling The term event handling refers to the task of reacting to user events, such as

mouse-button clicks or keyboard input.

■ image format Images can be stored in different formats. The differences primarily affect file

size and the quality of the image.

■ menu bar, content pane Components are placed in a frame by adding them to the frame's

menu bar, or content pane.

■ event listener An object can listen to component events by implementing an event-listener

interface.

■ anonymous inner classes Anonymous inner classes are a useful construct for implementing

event listeners.