Minimum Frame Size??

import java.io.*;import java.awt.*;import javax.swing.*;public class paintEstimatorView extends JFrame {	JPanel panel1 = new JPanel();	public paintEstimatorView() {		setLayout(new BorderLayout());		panel1.setLayout(new GridBagLayout());		GridBagConstraints c = new GridBagConstraints();		panel1.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);		panel1.setBorder(BorderFactory.createLineBorder(Color.black));		{ /* Panel 1 Components */	        JLabel label1 = new JLabel("Square Ft/Gallon");	        c.weightx = 0; c.gridx = 0; c.gridy = 0;	        c.insets = new Insets(10,20,0,10);	        c.anchor = GridBagConstraints.WEST;	        panel1.add(label1, c);	        JLabel label2 = new JLabel("Number of Coats");	        c.weightx = 0; c.gridx = 0; c.gridy = 1;	        c.insets = new Insets(10,20,10,10);	        c.anchor = GridBagConstraints.WEST;	        panel1.add(label2, c);	        	        JTextField jtSquareFt = new JTextField("0");	        c.weightx = 1; c.gridx = 1; c.gridy = 0;	        c.insets = new Insets(10,0,0,0);	        c.anchor = GridBagConstraints.EAST;	        c.fill = GridBagConstraints.HORIZONTAL;	        panel1.add(jtSquareFt, c);	        	        JTextField jtCoats = new JTextField("0");	        c.weightx = 1; c.gridx = 1; c.gridy = 1;	        c.insets = new Insets(10,0,10,0);	        c.anchor = GridBagConstraints.EAST;	        c.fill = GridBagConstraints.HORIZONTAL;	        panel1.add(jtCoats, c);	        JLabel label3 = new JLabel("Gallons Required");	        c.weightx = 0; c.gridx = 2; c.gridy = 0;	        c.insets = new Insets(10,30,0,0);	        //c.anchor = GridBagConstraints.EAST;	        panel1.add(label3, c);	        	        JTextField jtGallonsRequired = new JTextField("0");	        jtGallonsRequired.setEditable(false);	        c.weightx = 0; c.gridx = 3; c.gridy = 0;	        c.insets = new Insets(10,10,0,10);	        c.anchor = GridBagConstraints.EAST;	        c.fill = GridBagConstraints.HORIZONTAL;	        panel1.add(jtGallonsRequired, c);	        JButton jbtnCompute = new JButton("Compute Gallons Needed");	        c.weightx = 0; c.gridx = 2; c.gridy = 1; c.gridwidth = 2;	        c.insets = new Insets(10,50,10,10);	        c.anchor = GridBagConstraints.EAST;	        panel1.add(jbtnCompute, c);	        	        		}				add(panel1, BorderLayout.NORTH);	}    	public static void main(String[] args) {		paintEstimatorView frame = new paintEstimatorView();		frame.setTitle("Paint Estimator");		//frame.setSize(500,400);		frame.setPreferredSize(new Dimension(500,400));		frame.setMinimumSize(new Dimension(500,400));		frame.setLocationRelativeTo(null);		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);		frame.pack(); frame.setVisible(true);	}}