creating simple drawing in java

An appealing feature of Java is its graphics support, which enables you to visually enhance

your applications. We now introduce one of Java’s graphical capabilities—drawing lines.

It also covers the basics of creating a window to display a drawing on the computer screen. 

First Drawing Application

    

Our first drawing application simply draws two lines. Class DrawPanel (Fig. 4.18) performs

the actual drawing, while class DrawPanelTest (Fig. 4.19) creates a window to display

the drawing. In class DrawPanel, the import statements in lines 3–4 allow us to use

class Graphics (from package java.awt), which provides various methods for drawing

text and shapes onto the screen, and class JPanel (from package javax.swing), which provides

an area on which we can draw.