Is JComponent a Swing class?

The class JComponent is the base class for all Swing components except top-level containers. To use a component that inherits from JComponent, you must place the component in a containment hierarchy whose root is a top-level SWING container.

What is the use of JComponent class in Swing?

The JComponent class provides: The base class for both standard and custom components that use the Swing architecture. A “pluggable look and feel” (L&F) that can be specified by the programmer or (optionally) selected by the user at runtime.

What is JComponent class in Java?

The JComponent class extends the Container class, which itself extends Component . The Component class includes everything from providing layout hints to supporting painting and events. The Container class has support for adding components to the container and laying them out.

What is a JComponent?

JComponent is an abstract class that almost all Swing components extend; it provides much of the underlying functionality common throughout the Swing component library. Just as the java. awt. Component class serves as the guiding framework for most of the AWT components, the javax.

How do you use JComponent?

To use JComponent, the procedure is usually as follows:

  1. create a subclass of JComponent;
  2. override the paintComponent() method to draw whatever graphics are required;
  3. override getPreferredSize(), getMinimumSize() and getMaximumSize() to make your new component “behave” properly.

What is Nimbus look and feel?

Nimbus is a polished cross-platform look and feel introduced in the Java SE 6 Update 10 (6u10) release. The following screen capture, from SwingSet3 shows the Nimbus look and feel.

How do you change the look and feel in a Swing?

Swing Examples – Change the look and feel of a window

  1. UIManager. getCrossPlatformLookAndFeelClassName() − To get the Look and Feel of Java.
  2. UIManager. setLookAndFeel() − To set the look and feel of UI components.
  3. JFrame. setDefaultLookAndFeelDecorated(true); − To change the look and feel of the frame.

How do you use JApplet?

Now we can use JApplet that can have all the controls of swing….JApplet class in Applet

  1. import java. applet. *;
  2. import javax. swing. *;
  3. import java. awt. event. *;
  4. public class EventJApplet extends JApplet implements ActionListener{
  5. JButton b;
  6. JTextField tf;
  7. public void init(){
  8. tf=new JTextField();

What is Swing JComponent?

The JComponent class is the base class of all Swing components except top-level containers. Swing components whose names begin with “J” are descendants of the JComponent class. For example, JButton, JScrollPane, JPanel, JTable etc.