import java.awt.BorderLayout;
import java.awt.ComponentOrientation;
import java.awt.Container;
import java.awt.BorderLayout;
import java.awt.ComponentOrientation;
import java.awt.Container;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
* behaviour. The J2S transpiler should generate an html entry point for this
* class, allowing comparison between Java and Javascript execution.
*/
* behaviour. The J2S transpiler should generate an html entry point for this
* class, allowing comparison between Java and Javascript execution.
*/