import java.awt.Compon ent;
import java.awt.GridLa yout;
import java.awt.Keyboa rdFocusManager;
import java.util.Colle ctions;
import javax.swing.JBu tton;
import javax.swing.JFr ame;
import javax.swing.JPa nel;
public class MainFrame{
public MainFrame(){
}
public MainFrame(Strin g name){
show(name);
}
Component component=null;...