cant access graphics

[chanakya nani]

import java.awt.Color;
import java.awt.Graphics;


public class oval {
	
	public static void main(String[] args){
		paintComponent p=new paintComponent();
	}
	public int getWidth(){
		int w=300;
		return w;
	}
	public int getHeight(){
		int h=340;
		return h;
	}
	public void paintComponent(Graphics g){
		g.fillRect(0, 0, this.getWidth(), this.getHeight());
		int red=(int) (Math.random()* 300);
		int green=(int) (Math.random()* 300);
		int blue=(int) (Math.random()* 300);
		
		Color randomColor=new Color(red,green,blue);
		g.setColor(randomColor);
		g.fillOval(70,70,100,100);
	}
}

i'm getting an error that "

"Exception in thread "main" java.lang.Error: Unresolved compilation problems:
paintComponent cannot be resolved to a type
paintComponent cannot be resolved to a type

at oval.main(oval.java:8)"

[Rob Camick]

paintComponent() is a "method", not a "class". You can't create an instance of it.

I suggest you read the section from the Swing tutorial on Custom Painting.

Also, use the "code tags" when posting code so the code retains its formatting and is readable.

[Campbell Ritchie]

Rob Camick wrote: . . . Also, use the "code tags" when posting code so the code retains its formatting and is readable.

since he's new, I'll do that, and we can see how much better the post looks.
chanakya nani, welcome to JavaRanch

I would advise you not to use an IDE at this stage; get used to a decent text editor and write the GUI code by hand. Also get used to the Oracle/Sun compiler's error messages.