How can I get my Java program to FULLY reset. It looks like the way my reset but

Question

How can I get my Java program to FULLY reset. It looks like the way my reset button works, I get a new instance, but it doesn't go thru much of the main again and fully execute in the new instance. How can I fix this? Also, is there another way to reset something fully?

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.ImageIcon;
import javax.imageio.ImageIO;
import javax.swing.JButton;
import java.awt.BorderLayout;
import javax.swing.JPanel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.FlowLayout;
import java.util.Scanner;

public class BlackjackGameTable extends JFrame{
  
JButton stayButton = new JButton("STAY");
JButton hitButton = new JButton("HIT");
JButton resetButton = new JButton("Reset");
JLabel background;
Hand playerhand = new Hand();
Hand dealerhand = new Hand();
JLabel score;
JLabel text;
  

  
  
class DecisionListener implements ActionListener{
  
public void actionPerformed(ActionEvent a){
if(a.getSource() == hitButton){
  
CardGame2.hit(playerhand, dealerhand);
playerAddCardToTable(new CardRender2(playerhand.cardlist.get(playerhand.getSize()-1)));

score.setText("Your score: " + playerhand.getScore());
System.out.println("YOU CHOSE HIT! Your Score: " + playerhand.getScore());
//revalidate();
//
}
else if(a.getSource() == stayButton){
System.out.println("YOU CHOSE STAY!");
CardRender2 dealerOGCard = new CardRender2(dealerhand.cardlist.get(0));
background.add(dealerOGCard);
dealerOGCard.setBounds(0, 500, dealerOGCard.image.getWidth(), dealerOGCard.image.getHeight());
  
}
else if (a.getSource() == resetButton){
  
  
  
dispose();
new BlackjackGameTable();
  
}
  
}
}
  

  
public BlackjackGameTable(){
  
this.setTitle("Blackjack");
background = new TableComponent();
background.setLayout(null);
this.add(background,BorderLayout.CENTER);
this.setVisible(true);
this.setSize(1300,867);
  
JPanel buttonPanel = new JPanel();
score = new JLabel("Your score: " + playerhand.getScore() );
text = new JLabel("WELCOME TO BLACKJACK!");
ActionListener pressChoice = new DecisionListener();
hitButton.addActionListener(pressChoice);
stayButton.addActionListener(pressChoice);
resetButton.addActionListener(pressChoice);
buttonPanel.setSize(300,150);
buttonPanel.add(text, BorderLayout.PAGE_START);
buttonPanel.add(hitButton,BorderLayout.WEST);
buttonPanel.add(stayButton,BorderLayout.EAST);
buttonPanel.add(score, BorderLayout.PAGE_END);
buttonPanel.add(resetButton, BorderLayout.EAST);
  
buttonPanel.setVisible(true);
this.add(buttonPanel, BorderLayout.SOUTH);
  
CardGame2.dealIn(playerhand);
CardGame2.dealInDealer(dealerhand);
CardRender2 playerFirstCard = new CardRender2(playerhand.cardlist.get(0));
CardRender2 playerSecondCard = new CardRender2(playerhand.cardlist.get(1));
background.add(playerFirstCard);
playerFirstCard.setBounds(0,110, playerFirstCard.image.getWidth(), playerFirstCard.image.getHeight());
background.add(playerSecondCard);
playerSecondCard.setBounds(120, 110, playerSecondCard.image.getWidth(), playerSecondCard.image.getHeight());
  
CardRender2 dealerFirstCard = new CardRender2();
CardRender2 dealerSecondCard = new CardRender2(dealerhand.cardlist.get(1));
background.add(dealerFirstCard);
dealerFirstCard.setBounds(0, 550, dealerFirstCard.image.getWidth(), dealerFirstCard.image.getHeight());
background.add(dealerSecondCard);
dealerSecondCard.setBounds(120,550,dealerSecondCard.image.getWidth(), dealerSecondCard.image.getHeight());
  
score.setText("Your score: " + playerhand.getScore());
//dealerAddCardToTable(new CardRender2());
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
}
  
public void playerAddCardToTable(CardRender2 c){

background.add(c);
c.setBounds((playerhand.getSize() - 1) * c.image.getWidth(), 110, c.image.getWidth(), c.image.getHeight());
revalidate();
}
  
public void dealerAddCardToTable(CardRender2 d){
background.add(d);
d.setBounds((dealerhand.getSize() -1) * d.image.getWidth(), 550, d.image.getWidth(), d.image.getHeight());
revalidate();
}
  
public static void main(String[] args){
  
System.out.println("Welcome to Blackjack! ");
BlackjackGameTable g = new BlackjackGameTable();
System.out.println("Dealer hand: " + g.dealerhand.cardlist + " " + g.dealerhand.getScore());
System.out.println("Your hand: " + g.playerhand.cardlist + " " + g.playerhand.getScore());
  
boolean playerStillIn = true;
  
while((playerStillIn) && (!CardGame2.isBusted(g.playerhand))){
if(g.playerhand.getScore() != 21){
g.text.setText("Hit or stay?");

if(g.hitButton.getModel().isPressed()){

  
g.score.setText("Your score: " + g.playerhand.getScore());
System.out.println("YOUR HAND: " + g.playerhand.cardlist);
System.out.println("YOUR SCORE: " + g.playerhand.getScore());
}
else if (g.stayButton.getModel().isPressed()){
playerStillIn = false;

}
}
else{
System.out.println("BLACKJACK 21!!! YOU WIN BIGLY");
g.text.setText("BLACKJACK 21!!! YOU WIN BIGLY");
break;
}
}
  
if (CardGame2.isBusted(g.playerhand)){
System.out.println("BUSTED! YOU LOSE!!");
g.text.setText("BUSTED! YOU LOSE!!");
}
else{
  
while(((g.dealerhand.getScore() < 17) && (CardGame2.noBusted(g.playerhand,g.dealerhand))) &&(g.playerhand.getScore() != 21)) {
CardGame2.hit(g.dealerhand,g.playerhand);
g.dealerAddCardToTable(new CardRender2(g.dealerhand.cardlist.get(g.dealerhand.getSize()-1)));
}

  
if ((g.playerhand.getScore() == g.dealerhand.getScore())) {
System.out.println("DEALER HAND: " + g.dealerhand.getHand() + " and SCORE: " + g.dealerhand.getScore());
System.out.println("YOUR HAND: " + g.playerhand.getHand() + " and SCORE: " + g.playerhand.getScore());
System.out.println("PUSH");
g.text.setText("PUSH");
}
  
else if((CardGame2.isBusted(g.dealerhand)) && (g.playerhand.getScore() != 21)){
System.out.println("DEALER HAND: " + g.dealerhand.getHand() + " and SCORE: " + g.dealerhand.getScore());
System.out.println("YOUR HAND: " + g.playerhand.getHand() + " and SCORE: " + g.playerhand.getScore() );
System.out.println("YOU WIN");
g.text.setText("YOU WIN");
}
  
  
  
else if ((g.playerhand.getScore() < g.dealerhand.getScore())) {
System.out.println("DEALER HAND: " + g.dealerhand.getHand() + " and SCORE: " + g.dealerhand.getScore());
System.out.println("YOUR HAND: " + g.playerhand.getHand() + " and SCORE: " + g.playerhand.getScore());
System.out.println("YOU LOSE");
g.text.setText("YOU LOSE");
}
  
else if ((g.playerhand.getScore() > g.dealerhand.getScore()) && g.playerhand.getScore() != 21) {
System.out.println("DEALER HAND: " + g.dealerhand.getHand() + " and SCORE: " + g.dealerhand.getScore());
System.out.println("YOUR HAND: " + g.playerhand.getHand() + " and SCORE: " + g.playerhand.getScore());
System.out.println("YOU WIN");
g.text.setText("YOU WIN");
}
  
  
  
}
}
}
  

the bold is what is not working for me.

Explanation / Answer

Problem with the code:

You are calling a new instance to the Class BlackjackGameTable but not calling it's static main() method exclusively. You were just calling its constructor and making visible the JFrame.

Now, you might be thinking that by creating a new instance of a class we are already calling its main() method but that's not true. Each time when we run program then compiler searches for main() method and starts executing from the main() method ( this happens only for the time when we click the run button in our ide ) but after when program starts running (and when it's in the running state) then it's the code which tells the compiler which method / part to execute and which not to execute hence to make compiler understand that it needs to start over from main() method again ( since the program is already running ), we need to call main() method exclusively in the action listener of reset button.

To resolve this issue, you need to call main() hence, replace the bolded underlined part given below with the part in your code.

else if (a.getSource() == resetButton){

dispose();

main(null); // This statement will show up the new instance of the application by calling the main()

}

>> Please let me know in the comments if this solves the issue or not.

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