What is the difference between panel and frame in Java?

The main difference between Panel and Frame in Java is that the Panel is an internal region of a frame or other panel that helps to group multiple components together whereas a frame is an independent and resizable window with a title bar that contains all of them. the other components.

Java is a general-purpose, high-level programming language that is designed to have as few dependencies as possible. Java source code is converted into intermediate code called byte code. Any platform that has a JVM can execute the bytecode. Therefore, it is a platform independent language. One of the main advantages of Java is that it provides APIs for developing powerful graphical user interfaces (GUIs). AWT, which stands for Abstract Window Toolkit, is one such API. Panel and frame are two components in AWT.

Key Areas Covered

1. What is panel
     – Definition, Functionality
2. What is frame
     – Definition, Functionality
3. What is the relationship between panel and frame in Java?
     – Association scheme
4. What is the difference between panel and frame in Java?
     – Comparison of key differences

what is panel

The panel is a component that allows you to place multiple components on it. It is created using the Panel class. This class inherits the Container class. See the following program.

In the above program, f is a Frame object while panel is a Panel object. The panel object is positioned according to the location specified using the setBounds method. Panel color is gray. The b1 is a button object that is placed according to the specified location. The button color is blue. Then the button b1 is added to the panel and the panel is added to the Frame f1. Finally, the f1 frame is visible with the components.

what is frame

Frame is a component that functions as the top-level main window of the GUI application. It is created using the Frame class. For any GUI application, the first step is to create a framework. There are two methods to create a frame: by extending the Frame class or by creating an object of the Frame class.

According to the above program (Figure 1), f is a Frame object. Other GUI components are added to it. Finally, the frame is displayed. The frame is a resizable window and a movable window. It has the title bar. The default visibility of a frame is hidden. The programmer must make it visible by using the setVisible method and supplying it with the value “true”.

Relationship between panel and frame in Java

  • Panel requires a frame to display it. A frame can consist of one panel or a set of panels.

Difference Between Panel and Frame in Java

Definition

Panel in Java is an AWT component that represents a simple container that can attach other GUI components, including other panels. Frame in Java is an AWT component which is a top level window with a border and title. Thus, this explains the fundamental difference between Panel and Frame in Java.

class hierarchy

The main difference between Panel and Frame in Java is that Panel is a subclass of Container while Frame is a subclass of Window. Meanwhile, Window is a subclass of Container.

Class Declaration

Also, the class declaration for Panel is public. Class The Panel extends the Accessible Containers implements. In contrast, the class declaration for Frame is public. Frame class extends Window implements MenuContainer.

Title bar

Also, the Dashboard does not have a title bar. Since Frame is a top-level window, it has a title bar.

Border

Another difference between Panel and Frame in Java is that Panel does not have a border while Frame has a border.

Adding to another

Also, it is possible to add another panel to an existing panel. However, it is not possible to add a frame to another frame. So, this is also a significant difference between Panel and Frame in Java.

Dependence

Also, the panel depends on the frame. However, Frame is a separate output window.

Default Layout Manager

Panel uses FlowLayout as the default layout manager, while Frame uses BorderLayout as the default layout manager. This is another difference between Panel and Frame in Java.

conclusion

In short, Panel and Frame are two components in AWT. The main difference between Panel and Frame in Java is that Panel is an internal region in a frame or other panel that helps to group multiple components together while a Frame is a separate, resizable window with a title bar containing all other components.

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