error "javax.swing.JFrame" cannot find symbol frame.getContentPane90.add
807600Oct 26 2007 — edited Oct 26 2007Getting above errror when running the code below.how do I install the Jframe so the program can see it.Looks like JRE and JDK does not have it.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class SimpleGui1{
public static void main(String []args){
JFrame frame = new JFrame();
JButton button = new JButton("click me");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane90.add(button);
frame.setSize(300,300);
frame.setVisible(true);
}