java screen not showing

[jumpman8947]

I programmed a screen where it supposed to show different labels, text areas, buttons, etc, and it compiles with no errors but when I run the program the command prompt shows a lot of exceptions I can't figure out why its there, and my window isn't showing up... here's my code thanks

import java.awt.*;
import java.io.*;
import sun.audio.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.Color.*;
import javax.swing.JFrame.*;
import java.awt.EventQueue.*;

public class EncMain extends JFrame
{
	private JLabel imageIcon;
	private JComboBox box1;
	private JButton button1;
	private JLabel label1;
	private JLabel label2;
	private JTextField field1;


	public EncMain()
	{
		JLabel label1 = new JLabel();
		JLabel label2 = new JLabel();
		JButton button1 = new JButton();
		JTextField text1 = new JTextField();
		JComboBox box1 = new JComboBox();

		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setTitle("Main Menu");
		setBackground(new Color(204, 102, 0));

		label1.setIcon(new ImageIcon ("bible3.gif"));
		label1.setBorder(BorderFactory.createLineBorder(Color.blue));

		label2.setIcon(new ImageIcon ("seed.jpg"));
		label2.setPreferredSize(new Dimension(414,330));

		button1.setBackground( new Color(0, 0, 0));
		button1.setForeground(new Color(255, 0, 0));
		button1.setText("Exit");

		text1.setBackground(new Color(0, 102, 102));
		text1.setFont(new Font("Times New Roman", 1, 24));
		text1.setText("Welcome to Wisdom");

		box1.setModel(new DefaultComboBoxModel(new String[]
		{
			"Gospel", "Raeggae", "Hip-Hop"

		}));
		GroupLayout layout = new GroupLayout(getContentPane());
		getContentPane().setLayout(layout);
		layout.setHorizontalGroup(
			layout.createParallelGroup(GroupLayout.Alignment.LEADING)
			.addGroup(layout.createSequentialGroup()
			.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
			.addGroup(layout.createSequentialGroup()
			.addComponent(label2, GroupLayout.PREFERRED_SIZE, 340, GroupLayout.PREFERRED_SIZE)
			.addPreferredGap(LayoutStyle.ComponentPlacement.RELATED, 286, Short.MAX_VALUE)
			.addComponent(label1, GroupLayout.PREFERRED_SIZE, 146, GroupLayout.PREFERRED_SIZE))
			.addGroup(layout.createSequentialGroup()
				.addGap(300, 300, 300)
				.addComponent(button1, GroupLayout.PREFERRED_SIZE, 156, GroupLayout.PREFERRED_SIZE)))
			.addContainerGap())
			.addGroup(layout.createSequentialGroup()
				.addGap(262, 262, 262)
				.addComponent(text1, GroupLayout.PREFERRED_SIZE, 228, GroupLayout.PREFERRED_SIZE)
				.addPreferredGap(LayoutStyle.ComponentPlacement.RELATED, 116, Short.MAX_VALUE)
				.addComponent(box1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
				.addGap(108, 108, 108))

		);

                          pack();
                          setVisible(true);



		layout.setVerticalGroup(
			layout.createParallelGroup(GroupLayout.Alignment.LEADING)
			.addGroup(layout.createSequentialGroup()
			.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
			.addGroup(layout.createSequentialGroup()
			.addGap(8, 8, 8)
			.addComponent(field1, GroupLayout.PREFERRED_SIZE, 32, GroupLayout.PREFERRED_SIZE)
			.addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
			.addComponent(label2, GroupLayout.PREFERRED_SIZE, 275, GroupLayout.PREFERRED_SIZE))
			.addGroup(layout.createSequentialGroup()
			.addGap(16, 16, 16)
			.addComponent(box1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
			.addGap(18, 18, 18)
			.addComponent(label1)))
			.addPreferredGap(LayoutStyle.ComponentPlacement.RELATED, 26, Short.MAX_VALUE)
			.addComponent(button1, GroupLayout.PREFERRED_SIZE, 53, GroupLayout.PREFERRED_SIZE)
			.addContainerGap())

			);
			pack();
			setVisible(true);
		}
		public static void main(String[] args)
		{
			new EncMain();
		}

}

The exception threads are as followed

Exception in thread "main" java.lang.IllegalStateException: javax.swing.JTextField[,0,0,0x0,invalid,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@1c843d62,flags=296,maximumSize=,minimumSize=,pre
ferredSize=,caretColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],disabledTextColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],editable=true,margin=javax.swing.plaf.InsetsUIResource[top=0,left=0,bottom=0,right=0],selectedTextColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],selection
Color=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],columns=0,columnWidth=0,command=,horizontalAlignment=LEADING] is not attached to a vertical group
at javax.swing.GroupLayout.checkComponents(GroupLayout.java:1090)
at javax.swing.GroupLayout.prepare(GroupLayout.java:1040)
at javax.swing.GroupLayout.preferredLayoutSize(GroupLayout.java:878)
at java.awt.Container.preferredSize(Container.java:1788)
at java.awt.Container.getPreferredSize(Container.java:1773)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1662)
at javax.swing.JRootPane$RootLayout.preferredLayoutSize(JRootPane.java:917)
at java.awt.Container.preferredSize(Container.java:1788)
at java.awt.Container.getPreferredSize(Container.java:1773)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1662)
at java.awt.BorderLayout.preferredLayoutSize(BorderLayout.java:719)
at java.awt.Container.preferredSize(Container.java:1788)
at java.awt.Container.getPreferredSize(Container.java:1773)
at java.awt.Window.pack(Window.java:809)
at EncMain.<init>(EncMain.java:73)
at EncMain.main(EncMain.java:102)

[SVENeRGy]

you create your objects here:

public class EncMain extends JFrame
{
private JLabel imageIcon;
private JComboBox box1;
private JButton button1;
private JLabel label1;
private JLabel label2;
private JTextField field1;

And later you create them again:

JLabel label1 = new JLabel();
JLabel label2 = new JLabel();
JButton button1 = new JButton();
JTextField text1 = new JTextField();
JComboBox box1 = new JComboBox();

you should change that last in:

this.label1 = new JLabel();
this.label2 = new JLabel();
this.button1 = new JButton();
this.field1 = new JTextField();
this.box1 = new JComboBox();