Loan Calculator program

[Ariana Abrenica]

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Calc extends JFrame implements ActionListener{
	JButton Calculate = new JButton ("Calculate");
	JComboBox UserBox;
	JLabel loanLabel, payLabel;
	JTextField loan, pay;
	double rate, payment, years;
	public Calc(){
	setTitle("Loan Calculator");
	setSize(600,100);
	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	Container pane = getContentPane();
	pane.setLayout(new FlowLayout());
	loanLabel = new JLabel("Loan amount");
	loan = new JTextField(8);
	payLabel = new JLabel("Payment Owed");
	pay = new JTextField(8);
	pay.setEditable(false);
	string[] rateTerm = {"7 years","15years","30 years"};
	UserBox = new JComboBox(rateTerm);
	pane.add(UserBox);
	pane.add(loanLabel);
	pane.add(loan);
	pane.add(payLabel);
	pane.add(pay);
	Calculate.addActionListener(this);
	pane.add(Calculate);
	}
	
	public void actionPerformed(ActionEvent e){
		if(e.getSource() = Calculate){
			if(UserBox.getSelectedItem() == "7 years"){
			years = 7;
			rate = 0.0535;
		}
	}
			else if(UserBox.getSelectedItem() == "15 years"){
			years = 15;
			rate = 0.0555;
			
			}else{
			years = 30;
			rate = 0.0575;
			}
			
		payment = years * rate * Double.parseDouble(loan.getText());
		pay.setText (Double.toString(payment));
		}
	
	public static void main(String [] args){
	new Calc().setVisible(true);
	}
	}

Can someone help me with it? I accidentally reformat my flashdisk and forgot that the running program was saved there and now I have to work on it again. I'm having trouble with line 21 it says Calc.java:21: cannot find symbolsymbol: class string and it points on letter "S" thank you for the help

[Daniel Croft]

The string[] on line 21 should be a capital "S", so String[] rateTerm = {"7 years","15years","30 years"};

[Swastik Dey]

For value comparison you should not do the following

 if(UserBox.getSelectedItem() == "7 years")

it should be

if(UserBox.getSelectedItem().equals("7 years")

[Wendy L Gibbons]

is this an example for college? or are you actually hopeing to get to get real answers out, as you are using a daily rate 0.05 as an annual rate.

[Ariana Abrenica]

Wendy Gibbons wrote:is this an example for college? or are you actually hopeing to get to get real answers out, as you are using a daily rate 0.05 as an annual rate.

that's an example for college