View difference between Paste ID: eJrq30BU and yfsSjScB

 /* So basically, I made a simple calculator in my spare time. When I thought what else to do
 I decided to add a graphing function. I thought it might be a good way to learn about the
 paintComponent. The thing is though, I never REALLy learned about it, which would explain my
 current troubles
 */
 import java.awt.*;
 import java.awt.event.*;
 import javax.swing.*;
 
 
 public class ab extends JFrame implements ActionListener {
 
 	JLabel yEqu = new JLabel("Y= ");
 	JTextField equation = new JTextField(20);
 	JButton graphB =new JButton("Graph");
 
 	public static void main(String[] args0){
 		ab grapher = new ab();
 	}
 	public ab(){
 		this.setLocationRelativeTo(null);
 		this.setVisible(true);
 		this.setTitle("Grapher");
 		this.setSize(800,700);
 		this.setDefaultCloseOperation(EXIT_ON_CLOSE);
 		this.setLayout(new FlowLayout());
 		this.add(yEqu);
 		this.add(equation);
-	public ab(Graphics g){
+
 			graphB.addActionListener(this);
 	}
-		g2.fillRect(100,200,300,100);
+
 	public void paintComponent(Graphics g){
 		super.paintComponents(g);
 		Graphics2D g2 = (Graphics2D)g;
 		g2.fillRect(100,200,300,100); //Just a test to see if it is working
 
-			equation.setText("yay");
+
 
 	public void actionPerformed(ActionEvent e) {
 		if(e.getSource() == this.graphB){
 			equation.setText("yay"); //ignore this. Just a test to see if the button was working
 
 		}
 	}
 }