Java GroupLayout Example

Chapter: Swing Last Updated: 27-09-2016 18:30:43 UTC

Program:

            /* ............... START ............... */
                
import java.awt.Container;
import javax.swing.GroupLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class JavaGroupLayoutExample {

	public static void main(String[] args) {
		JFrame frame = new JFrame("GroupLayout");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container contentPane = frame.getContentPane();

		GroupLayout groupLayout = new GroupLayout(contentPane);
		contentPane.setLayout(groupLayout);
		JLabel label = new JLabel("Label");
		JButton b2 = new JButton("Second Button");
		groupLayout.setHorizontalGroup(groupLayout.createSequentialGroup().addComponent(label).addComponent(b2));

		groupLayout.setVerticalGroup(
				groupLayout.createParallelGroup(GroupLayout.Alignment.BASELINE).addComponent(label).addComponent(b2));

		frame.pack();
		frame.setVisible(true);
	}
}
                /* ............... END ............... */
        

Output


Java GroupLayout Example

Notes:

  • A GroupLayout uses the concept of a group. A group consists of elements. An element of a group may be a component, a gap, or another group.
  • The GroupLayout class contains three inner classes: Group, SequentialGroup, and ParallelGroup.
  • Group is an abstract class and the other two classes are inherited from the Group class.
  • The GroupLayout class provides two separate methods to create groups: createSequentialGroup()and createParallelGroup().

Tags

GroupLayout, Java, Swing

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