JApplet problems

so i have the following code Code: import java.awt.*; import java.awt.event.*; import javax.swing.*; public class lab5 extends JApplet implements ActionListener { private lab5 invest = new lab5(); private JFrame loan = new JFrame("Loan Calculator"); private JButton btninvest = new JButton("Calculate your Investment"); private JButton btnloan = new JButton("Loan Calculator"); /*Initalize the applet*/ public void init()