GUI problem with textfields, reading in text from a textpad

Question

Alright well, here is my problem. I am having trouble with aliging the textfields to how I want it but I can't get it to come out how I want it. First, I am trying to figure out how to have the some text appear right above a textfield. Example:
File Name
I can't get it appear that way, the text appears side to side with the textfield. And the other problem is how can I made the size of textfield to how I want it. I was reading that you have to assign a specfic number in the text field.
This is the code I have so far:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class IP_Header extends JApplet
private JTextField lookUp, showInfo;
private JButton analyze;
private JLabel msg;
public void init()
JPanel p1 = new JPanel();
p1.setLayout(new GridLayout(3,2));
p1.add(new JLabel("File Name"));
p1.add(lookUp = new JTextField());
p1.add(analyze = new JButton("Analyze"));
p1.add(showInfo = new JTextField());
msg = new JLabel(" ");
Container cp = getContentPane();
cp.setLayout(new BorderLayout());
cp.add(p1, BorderLayout.NORTH);
With this what I am tryin to do is as follows:
File Name
* "TextField" * *
**************** * This is a textfield where I am just going to
* have some text appear in it
* "Button" * *
Thank you for your help. I hope you can help me. I haven't done java for a quite a while. Thanks again

Answer 1

Thanks for help ... really helpful and understanding. I am trying to read a file from the computer which has some numbers in it and I want those numbers to be shown on the textfields individually. The numbers are in a notepad file and they are .... 4, 5, 200, 780, 1, 0, 0, 12, 6, 0, 129, 24, 21, 44, 133, 62, 159, 7. I got the program to compile and everything by adding the code that I believe should work . But whenever I put the file name in and press the button analyze ... it gives me a error saying "Exception: access denied (java.io.FilePermission c:\TCP read) .. can't quite get it ...here the code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
public class IP_Header extends JApplet
    private JTextField lookUp, showInfo;
    private JButton analyze;
    private JLabel msg;
    public void init()
        GridBagLayout gridbag = new GridBagLayout();
        JPanel p1 = new JPanel(gridbag);
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.gridwidth = gbc.REMAINDER;     // one component per row
        gbc.insets = new Insets(0,20,5,0); // spacer [top, left, bottom, right]
        gbc.weightx = 1.0;                 // allows horizontal placement
        gbc.anchor = gbc.WEST;             // align left
        p1.add(new JLabel("File Name"), gbc);
        p1.add(lookUp = new JTextField(16), gbc);
        p1.add(analyze = new JButton("Analyze"), gbc);
        p1.add(showInfo = new JTextField(16), gbc);
        // center section of content pane border layout
        // First Panel - 2 rows, 4 columns
        JPanel p2 = new JPanel(gridbag);
        gbc.insets = new Insets(2,0,0,0);
        gbc.anchor = gbc.CENTER;
        JTextField verText = new JTextField(8);
        JTextField HLENText = new JTextField(8);
        JTextField ServiceType = new JTextField(8);
        JTextField TotalText = new JTextField(8);
        gbc.gridwidth = 1;
        p2.add(new JLabel("VER"), gbc);
        p2.add(new JLabel("HLEN"), gbc);
        p2.add(new JLabel("Service Type"), gbc);
        gbc.gridwidth = gbc.REMAINDER;
        p2.add(new JLabel("Total Length"), gbc);
        gbc.gridwidth = 1;
        p2.add(verText, gbc);
        p2.add(HLENText, gbc);
        p2.add(ServiceType, gbc);
        gbc.gridwidth = gbc.REMAINDER;
        p2.add(TotalText, gbc);
        // Second Panel - 4 rows, 3 columns
        JPanel p3 = new JPanel(gridbag);
        JTextField fragText = new JTextField(8);
        JTextField flags = new JTextField(8);
        JTextField fragOffText = new JTextField(8);
        gbc.insets = new Insets(5,0,0,0);
        gbc.gridwidth = 1;
        p3.add(new JLabel("Fragmentation ID"), gbc);
        p3.add(new JLabel("Flags"), gbc);
        gbc.gridwidth = gbc.REMAINDER;
        p3.add(new JLabel("Fragmentation Offset"), gbc);
        gbc.insets = new Insets(2,0,0,0);
        gbc.gridwidth = 1;
        p3.add(fragText, gbc);
        p3.add(flags, gbc);
        gbc.gridwidth = gbc.REMAINDER;
        p3.add(fragOffText, gbc);
        JTextField ttlText = new JTextField(8);
        JTextField protocolText = new JTextField(8);
        JTextField headText = new JTextField(8);
        gbc.insets = new Insets(5,0,0,0);
        gbc.gridwidth = 1;
        p3.add(new JLabel("TTL"), gbc);
        p3.add(new JLabel("Protocol"), gbc);
        gbc.gridwidth = gbc.REMAINDER;
        p3.add(new JLabel("HeaderChecksum"), gbc);
        gbc.insets = new Insets(2,0,0,0);
        gbc.gridwidth = 1;
        p3.add(ttlText, gbc);
        p3.add(protocolText, gbc);
        gbc.gridwidth = gbc.REMAINDER;
        p3.add(headText, gbc);
        // Third Panel - 4 rows, 4 columns
        JPanel p4 = new JPanel(gridbag);
        JTextField sIP1text = new JTextField(4);
        JTextField sIP2text = new JTextField(4);
        JTextField sIP3text = new JTextField(4);
        JTextField sIP4text = new JTextField(4);
        gbc.insets = new Insets(5,0,0,0);
        gbc.gridwidth = 1;
        p4.add(new JLabel("SourceIP"), gbc);
        p4.add(new JLabel(" "), gbc);
        p4.add(new JLabel(" "), gbc);
        gbc.gridwidth = gbc.REMAINDER;
        p4.add(new JLabel(" "), gbc);
        gbc.insets = new Insets(2,0,0,0);
        gbc.gridwidth = 1;
        p4.add(sIP1text, gbc);
        p4.add(sIP2text, gbc);
        p4.add(sIP3text, gbc);
        gbc.gridwidth = gbc.REMAINDER;
        p4.add(sIP4text, gbc);
        JTextField dIP1text = new JTextField(4);
        JTextField dIP2text = new JTextField(4);
        JTextField dIP3text = new JTextField(4);
        JTextField dIP4text = new JTextField(4);
        gbc.insets = new Insets(5,0,0,0);
        gbc.gridwidth = 1;
        p4.add(new JLabel("Destination IP"), gbc);
        p4.add(new JLabel(" "), gbc);
        p4.add(new JLabel(" "), gbc);
        gbc.gridwidth = gbc.REMAINDER;
        p4.add(new JLabel(" "), gbc);
        gbc.insets = new Insets(2,0,0,0);
        gbc.gridwidth = 1;
        p4.add(dIP1text, gbc);
        p4.add(dIP2text, gbc);
        p4.add(dIP3text, gbc);
        gbc.gridwidth = gbc.REMAINDER;
        p4.add(dIP4text, gbc);
        JPanel panel = new JPanel(gridbag);
        gbc.fill = gbc.HORIZONTAL;
        gbc.insets = new Insets(0,5,0,5);
        panel.add(p2, gbc);
        panel.add(p3, gbc);
        panel.add(p4, gbc);
        msg = new JLabel(" ");
        Container cp = getContentPane();
        cp.setLayout(new BorderLayout());
        cp.add(p1, "North");
        cp.add(panel);
        setSize(450,375);
         analyze.addActionListener(new ActionListener()
               public void actionPerformed(ActionEvent e)
                    String array[] = new String[18];
                    String blankString = new String();
                    String tempString = lookUp.getText();
                    showInfo.setText(array[0]);
                    try
                         FileReader fr = new FileReader(tempString);
                         BufferedReader br = new BufferedReader(fr);
                         String line = br.readLine();
                         StringTokenizer st = new StringTokenizer (line,",");
                         for (int i=0; i<=18; i++)
                              array[i] = st.nextToken().trim();
                    catch(Exception f)
                         System.out.println("Exception: " + f.getMessage());
}