죽어라고 디자인 해놓고 실행하면 왜 폼이 안뜨죠?

jbInit()
이것도 있는뎅....

알려주세요~

아래가 소스...

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class calc {
    public calc() {
        try {
            jbInit();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    public static void main(String[] args) throws Exception {
        //calc calc = new calc();
    }

    private void jbInit() throws Exception {
        jTextField1.setText("0.");
        jTextField1.setColumns(46);
        jTextField1.setHorizontalAlignment(SwingConstants.RIGHT);
        jButton1.setMaximumSize(new Dimension(80, 25));
        jButton1.setMinimumSize(new Dimension(80, 25));
        jButton1.setPreferredSize(new Dimension(89, 25));
        jButton1.setHorizontalTextPosition(SwingConstants.CENTER);
        jButton1.setText("Backspace");
        jButton2.setMaximumSize(new Dimension(89, 25));
        jButton2.setMinimumSize(new Dimension(89, 25));
        jButton2.setPreferredSize(new Dimension(89, 25));
        jButton2.setText("CE");
        jButton3.setMaximumSize(new Dimension(89, 25));
        jButton3.setMinimumSize(new Dimension(89, 25));
        jButton3.setPreferredSize(new Dimension(89, 25));
        jButton3.setText("C");
        jButton4.setBackground(UIManager.getColor(
                "FormattedTextField.inactiveForeground"));
        jButton4.setMaximumSize(new Dimension(70, 25));
        jButton4.setMinimumSize(new Dimension(70, 25));
        jButton4.setPreferredSize(new Dimension(70, 25));
        jButton5.setMaximumSize(new Dimension(55, 25));
        jButton5.setMinimumSize(new Dimension(55, 25));
        jButton5.setPreferredSize(new Dimension(55, 25));
        jButton5.setText("MC");
        jButton6.setText("7");
        jButton7.setText("8");
        jButton8.setText("9");
        jButton9.setText("/");
        jButton10.setText("sqrt");
        jPanel1.setEnabled(true);
        jPanel1.add(jTextField1, null);
        jPanel1.add(jButton4);
        jPanel1.add(jButton1);
        jPanel1.add(jButton2);
        jPanel1.add(jButton3);
        jPanel1.add(jButton5);
        jPanel1.add(jButton6);
        jPanel1.add(jButton7);
        jPanel1.add(jButton8);
        jPanel1.add(jButton9);
        jPanel1.add(jButton10);
    }

    JPanel jPanel1 = new JPanel();
    JTextField jTextField1 = new JTextField();
    JButton jButton1 = new JButton();
    JButton jButton2 = new JButton();
    JButton jButton3 = new JButton();
    JMenuBar jMenuBar1 = new JMenuBar();
    JButton jButton4 = new JButton();
    JButton jButton5 = new JButton();
    JButton jButton6 = new JButton();
    JButton jButton7 = new JButton();
    JButton jButton8 = new JButton();
    JButton jButton9 = new JButton();
    JButton jButton10 = new JButton();
}