This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I have a big problem I have a window that extends Jframe fenetere
contains two panels panel1 contains 2 buttons and panel2 is empty and I have two other panel extends JPanel panel3 panel4 and I like when I click button 1 i want to add 3 to the panel panel2 empty and when I click the button2 I want to add a panel4 panel2 and disappear the panel3 knowing that I work on netbeans: