Howmuch gui application

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Java

I have my 2 values that come up after entering some values into the textfields but they cover the bottom two strings of text. I need to move the values that appear to the right side of the app.

What I have tried:

package howmuch;
/**
*
* @author stephenwessels
*/
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.NumberFormat;
public class HowMuch extends JFrame
implements ActionListener
{
Container content = this.getContentPane();

JLabel purchase = new JLabel("Amount of Purchase");
JLabel lblPayment = new JLabel("Monthly Payment");
JLabel lblTotCost = new JLabel("Total Purchase Cost");
JLabel IR = new JLabel("Interest Rate");
JLabel YTP = new JLabel("Years to Pay");
JLabel mpAmount = new JLabel();
JLabel tpc = new JLabel();
JTextField tfAmount = new JTextField();
JTextField tfIR = new JTextField();
JTextField tfYTP = new JTextField();
JButton button = new JButton("Calculate");



public HowMuch()
{
content.setLayout(new GridLayout(0,2, 5,5));
content.add(purchase);
content.add(tfAmount);
content.add(IR);
content.add(tfIR);
content.add(YTP);
content.add(tfYTP);
content.add(lblPayment);
content.add(mpAmount);
content.add(lblTotCost);
content.add(tpc);
content.add(button);



this.setVisible(true);
this.setSize(350,300);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setTitle("First GUI App");

button.addActionListener(this);

}
public void actionPerformed(ActionEvent e)
{
String strAmount = tfAmount.getText();
String strIR = tfIR.getText();
String strYTP = tfYTP.getText();

Double dAmount = new Double(strAmount);
Double dIR = new Double(strIR);
Double dYTP = new Double(strYTP);

double amount = Double.parseDouble(tfAmount.getText());
double ir = Double.parseDouble(tfIR.getText());
double ytp = Double.parseDouble(tfYTP.getText());

Double MP = (amount * ir) / (1 - (Math.pow(1.0 / (1.0 + ir), ytp * 12)));
Double TC = (MP * 12) * ytp;

NumberFormat fmt = NumberFormat.getCurrencyInstance();

lblPayment.setText(fmt.format(MP));
lblTotCost.setText(fmt.format(TC));
}

/**
* @param args the command line arguments
*/
public static void main(String[] args)
{
HowMuch gui = new HowMuch();
}
}