Java Certification Question 0038

Which of the following statements are true?
1) Code must be written to cause a frame to close on selecting the system close menu
2) The default layout for a Frame is the BorderLayout Manager
3) The layout manager for a Frame cannot be changed once it has been assigned
4) The GridBagLayout manager makes extensive use of the the GridBagConstraints class.



Answer :
1) Code must be written to cause a frame to close on selecting the system close menu
2) The default layout for a Frame is the BorderLayout Manager
4) The GridBagLayout manager makes extensive use of the the GridBagConstraints class.
You can change the layout manager for a Frame or any other container whenever you like.