Problem when to get JFrame components

I want to get all components from a JFrame. The problem is, when first time i want to get JFrame components...it will print like below...
nullHi i am button
Hi i am label
Hi i am text field
Hi i am button that you clicked
but for second time and others, i get true result like below
Hi i am button
Hi i am label
Hi i am text field
Hi i am button that you clicked
Can someone show me some light, what mean of null that i get every first time i want to get JFrame components.
Below is my source code :
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.GridLayout;
import java.awt.Component;
import java.awt.BorderLayout;
import java.awt.Container;
public class GetAllComponentInJFrame implements ActionListener
     String storeAllComponentName;
     JFrame frame=new JFrame("Get all component in a JFrame");
     JButton button=new JButton("Button");
     JLabel label=new JLabel("Label");
     JTextField textField=new JTextField("Text field");
     JButton buttonToClick=new JButton("Click here to get all component in JFrame");
     GridLayout gl=new GridLayout(4,1);
     public GetAllComponentInJFrame()
          frame.setLayout(gl);
          buttonToClick.addActionListener(this);
          frame.setName("I am JFrame");
          button.setName("Hi i am button");
          label.setName("Hi i am label");
          textField.setName("Hi i am text field");
          buttonToClick.setName("Hi i am button that you clicked");
          frame.getContentPane().add(button);
          frame.getContentPane().add(label);
          frame.getContentPane().add(textField);
          frame.getContentPane().add(buttonToClick);
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.setSize(400,400);
          frame.setVisible(true);
     public void actionPerformed(ActionEvent event)
          if(event.getSource()==buttonToClick)
               Component[]arrayToStoreComponent=frame.getContentPane().getComponents();
               for(int i=0; i<arrayToStoreComponent.length; i++)
                    Component temp=arrayToStoreComponent;
                    storeAllComponentName=storeAllComponentName+temp.getName()+"\n";
               System.out.println(storeAllComponentName);
               storeAllComponentName=new String("");
     public static void main(String[]args)
          GetAllComponentInJFrame gacijf=new GetAllComponentInJFrame();

So, why i just get it only on first..not on second or third when i click button :
JButton buttonToClick=new JButton("Click here to get all component in JFrame");I hope you can show me the right way to get all components in JFrame? Thanks for spend a time on my problem.

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Hello all! I appreciate being able to post questions on this forum, and am grateful for anyone's help with this.
I have written a program that displays a GUI and (will) read a random word from a file for use in a Hangman-like game.
The trouble is, today I have no display (yesterday I had display just fine!). When I run the program, it opens just an empty Container with nothing inside.
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package secretphraseusingfile;
import java.io.*;       //program uses IOStreams
import java.awt.*;      //program uses Font, Colors
import java.awt.geom.*; //program uses shapes
import java.awt.event.*;//program uses ActionListeners
import javax.swing.*;   //program uses JOptionPane, JFrame
//Class SecretPhraseUsingFile
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        int type = 1;
        public DrawPanel(int type)
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        protected void paintComponent(Graphics gr)
            super.paintComponent(gr);
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    DrawPanel drawingP = new DrawPanel(1);
    JPanel usedP    = new JPanel(innerFlow);
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    JPanel wordP    = new JPanel(innerFlow);
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usedP.setBackground(backgroundColor);
wordP.setBackground(backgroundColor);
buttonP.setBackground(backgroundColor);
captionP.setBackground(backgroundColor);
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masterP.add(topP);
masterP.add(bottomP);
topP.add(drawingP);
topP.add(usedP);
bottomP.add(wordP);
bottomP.add(buttonP);
bottomP.add(captionP);
captionP.add(caption);
wordP.add(wordLabel);
wordLabel.setFont(wordFont);
for(int i = 0; i < 26; i++)
buttonP.add(abc[i]);
abc[i].addActionListener(this);
usedP.add(lblLettersUsed);
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try
istream = new DataInputStream(new FileInputStream(wordFile));
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System.err.println("File not opened. " + "Cause: " + ioe.getMessage());
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public static void main(String[] args) {
//declaration of constants
int DELTA_X = 0, DELTA_Y = 0;
int FRAME_WIDTH = 1280, FRAME_HEIGHT = 770;
//declaration of JFrame
SecretPhraseUsingFile display = new SecretPhraseUsingFile();
display.setBounds(DELTA_X, DELTA_Y, FRAME_WIDTH, FRAME_HEIGHT);
display.setVisible(true);
display.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}//end of method main
public void actionPerformed(ActionEvent e)
Object source = e.getSource();
if(source == exitButton)
exitProgram();
else if(source == abc[0]) //'A'
System.out.println("AAAAAAAAAA");
else if(source == abc[1]) //'B'
System.out.println("BBBBBBBBBB");
else if(source == abc[2]) //'C'
System.out.println("CCCCCCCCCC");
else if(source == abc[3]) //'D'
System.out.println("DDDDDDDDDD");
else if(source == abc[4]) //'E'
System.out.println("EEEEEEEEEE");
else if(source == abc[5]) //'F'
System.out.println("FFFFFFFFFF");
else if(source == abc[6]) //'G'
System.out.println("GGGGGGGGGG");
else if(source == abc[7]) //'H'
System.out.println("HHHHHHHHHH");
else if(source == abc[8]) //'I'
System.out.println("IIIIIIIIII");
else if(source == abc[9]) //'J'
System.out.println("JJJJJJJJJJ");
else if(source == abc[10])//'K'
System.out.println("KKKKKKKKKK");
else if(source == abc[11])//'L'
System.out.println("LLLLLLLLLL");
else if(source == abc[12])//'M'
System.out.println("MMMMMMMMMM");
else if(source == abc[13])//'N'
System.out.println("NNNNNNNNNN");
else if(source == abc[14])//'O'
System.out.println("OOOOOOOOOO");
else if(source == abc[15])//'P'
System.out.println("PPPPPPPPPP");
else if(source == abc[16])//'Q'
System.out.println("QQQQQQQQQQ");
else if(source == abc[17])//'R'
System.out.println("RRRRRRRRRR");
else if(source == abc[18])//'S'
System.out.println("SSSSSSSSSS");
else if(source == abc[19])//'T'
System.out.println("TTTTTTTTTT");
else if(source == abc[20])//'U'
System.out.println("UUUUUUUUUU");
else if(source == abc[21])//'V'
System.out.println("VVVVVVVVVV");
else if(source == abc[22])//'W'
System.out.println("WWWWWWWWWW");
else if(source == abc[23])//'X'
System.out.println("XXXXXXXXXX");
else if(source == abc[24])//'Y'
System.out.println("YYYYYYYYYY");
else if(source == abc[25])//'Z'
System.out.println("ZZZZZZZZZZ");
}//end of actionPerformed()
@Override
public void paint(Graphics brush)
super.paint(brush);
//Graphics2D g2D = (Graphics2D)brush;
}//end paint()
public void exitProgram()
int answer = 1;
answer = JOptionPane.showConfirmDialog(null,
"Do you want to quit?");
if(answer == 0)
System.exit(0);
}//end exitProgram()
}//end of class SecretPhraseUsingFile

Thanks JSG. Yeah, I definitely have too much in my constructor for sure. I just do that because I am uneasy about creating methods that I don't know how to use well. I am just now getting the hang of using try catch statements (they are very confusing!) and also knowing how to use FileStreams correctly (that took me forever to learn, and I still need work on it). I know that I need serious study of program architecture, how to design a program well. As for now, I'm content with smalll programs that at least work (albeit clunky).
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Problem when to get JFrame components

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