[JAVA] non capisco perchè nn vada...

[X-r3nd3r]

import javax.swing.*;

public class Prova extends JFrame
{
	public static void main(String[] args) 
	{
		Prova frame1 = new Prova();
		frame.show(); 
	}
	
	public Prova()
	
	{
		setSize(200,200);
	}
	

}

Cannot resolve symbol frame.show();...perkè????