Java AWT

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Java AWT (Abstract Window Toolkit) is an API to develop GUI or window-based applications in java.Java AWT components are platform-dependent i.e. components are displayed according to the view of operating system. AWT is heavyweight i.e. its components are using the resources of OS.
The java.awt package provides classes for AWT api such as TextField, Label, TextArea, RadioButton, CheckBox, Choice, List etc.

Java AWT Hierarchy
Container:
The Container is a component in AWT that can contain another components like buttons, textfields, labels etc. The classes that extends Container class are known as container such as Frame, Dialog and Panel.
Window:
The window is the container that have no borders and menu bars. You must use frame, dialog or another window for creating a window.
Panel:
The Panel is the container that doesn't contain title bar and menu bars. It can have other components like button, textfield etc.
Frame:
The Frame is the container that contain title bar and can have menu bars. It can have other components like button, textfield etc.

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