AWT (Abstract Window Toolkit) is a concept designed for building simple GUIs in Java applications.Java AWT components are platform-dependent i.e. AWT components look different on different operating systems . AWT is heavyweight i.e. its components use the resources of OS.
AWT consists of 12 packages of 370 classes
2 packages – java.awt and java.awt.event – are commonly-used.
1)The java.awt package contains the core AWT graphics classes:
a)GUI Component classes, such as Button, TextField, and Label,
b)GUI Container classes, such as Frame and Panel,
c)Layout managers, such as FlowLayout, BorderLayout and GridLayout,
d)Custom graphics classes, such as Graphics, Color and Font.