
C:\Users\Classroom\Desktop\graphics & graphics2d>jshell
|  Welcome to JShell -- Version 11.0.7
|  For an introduction type: /help intro

jshell> import java.awt.*

jshell> import javax.swing.*

jshell> JFrame f = new JFrame("testing")
f ==> javax.swing.JFrame[frame0,98,0,0x0,invalid,hidden ... tPaneCheckingEnabled=true]

jshell> f.setVisible(true)

jshell> Graphics g = f.getContentPane().getGraphics()
g ==> sun.java2d.SunGraphics2D[font=javax.swing.plaf.Fo ... java.awt.SystemColor[i=9]]

jshell> g.drawLine(0,0, 300,300)

jshell> g.setColor(Color.red)

jshell> g.drawLine(10,0, 310,300)

jshell> g.drawLine(0,100, 300,110)

jshell> g.drawOval(0,0, 200,200)

jshell> g.fillOval(0,0, 200,200)

jshell> g.drawString("hello", 200,250)

jshell> g.setColor(Color.black)

jshell> g.drawString("hello", 200,150)

jshell> 
