Key Differences between JFrame and JPanel in Swing

In Swing, a JFrame is a top-level container that represents a window with decorations such as borders, title bar, and buttons for closing, maximizing, and minimizing. On the other hand, a JPanel is a lightweight container used to organize and group components within a JFrame or another container like JDialog or JApplet.

When to Use JFrame:

• Use a JFrame when you need a standalone window for your Swing application.
• JFrame is ideal for creating the main application window that contains menus, toolbars, and other components.
• You can set the defaultCloseOperation of a JFrame to specify the behavior when the close button is clicked.

When to Use JPanel:

• Use a JPanel when you want to group components together within a container.
• JPanel is commonly used for organizing and layout management within a JFrame or other containers.
• You can nest multiple JPanels within a JFrame to create a complex UI with different sections.

Both JFrame and JPanel play essential roles in creating user interfaces in Swing, with JFrame providing the main window frame and JPanel facilitating component organization and configuration.