Add keys to arraylist

How can I make it when for example a person types A and the A character goes into an array and then if the person types in Z the Z gets added to array, and then the person clicks go and the person should get a message saying AZ ?

Use a StringBuilder? And add the typed charaters to the StringBuilder using the append method? IOW, don't use an array at all?

Quote:

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Originally Posted by masijade

Use a StringBuilder? And add the typed charaters to the StringBuilder using the append method? IOW, don't use an array at all?

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Ok, thanks.
Now can I do this to make it show on my applet?

Code:

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drawLogin login = new drawLogin();
                sb.append(ke.getKeyChar());
                login.username = sb.toString();

---

This is my drawLogin class:

Code:

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package org.swc.GamePanels.Login;

import java.awt.Color;
import java.awt.Font;
import java.awt.FontFormatException;
import java.awt.Graphics;
import java.io.IOException;
import java.io.InputStream;



public class drawLogin {
       
        public String username = "";
       
        public void loginPaint(Graphics g){
                try{
                  InputStream fin = this.getClass().getResourceAsStream("GlueRegular.ttf");
                  Font asimov = Font.createFont ( // Load font from InputStream fin
                    Font.PLAIN,
                    fin
                  ).deriveFont(60f);
                g.setColor(Color.LIGHT_GRAY);
                g.fillRoundRect(183, 100, 400, 300, 20, 20);
                g.setColor(Color.BLUE);
                g.setFont(asimov);
                g.drawString("Login", 345, 160);
                }catch(Exception e){}
                g.setColor(Color.BLACK);
                g.setFont(new Font("Arial", Font.PLAIN, 12));
                g.drawString("Username :", 200, 220);
                g.setColor(Color.WHITE);
                g.fillRect(270, 207, 290, 18);
                g.setColor(Color.BLACK);
                g.drawRect(270, 207, 290, 18);
                g.drawString(username, 273, 221);
               
        }

}

---

Because nothing happens when I try it.

Quote:

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nothing happens

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How/where is your loginPaint() method called? How Are you sure its being called?
What is the value of username when it is called?

I gets called here:

Code:

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                gamePanel = new JPanel(){

                        private static final long serialVersionUID = 1L;
                       
                        public void paint(Graphics g){
                                g.fillRect(0, 0, 765, 503);
                               
                                getPanels panel = new getPanels();
                                panel.setPanels(g);
                        }
                };

---

getPanels class:

Code:

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package org.swc.GamePanels;

import java.awt.Graphics;

import org.swc.GamePanels.Login.drawLogin;
import org.swc.Methods.Logging;



public class getPanels extends Logging {

        public boolean loggedIn = false;
       
        public enum panels{
                LOGIN, GAME;
        }
       
        public panels GetPanel(){
                if(loggedIn == false){
                        return panels.LOGIN;
                }
                if(loggedIn == true){
                        return panels.GAME;
                }
                return null;
        }
       
        public void setPanels(Graphics g){
                switch(GetPanel()){
                case LOGIN:
                        sM("Loading login panel..");
                        drawLogin draw = new drawLogin();
                        draw.loginPaint(g);
                        break;
                case GAME:
                        sM("Loading game panel..");
                        break;
                }
        }

}

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Ok, next question: How Are you sure its being called?

I get a message saying Loading game panel. Because my sM method is just
public void sM(String s)
System.out.println(s);.
oh, and my painting comes up.

Quote:

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I get a message saying Loading game panel

---

Where does loginPaint() call any method to report it has been called?

Code:

---

public void loginPaint(Graphics g){
                try{
                  InputStream fin = this.getClass().getResourceAsStream("GlueRegular.ttf");
                  Font asimov = Font.createFont ( // Load font from InputStream fin
                    Font.PLAIN,
                    fin
                  ).deriveFont(60f);
                g.setColor(Color.LIGHT_GRAY);
                g.fillRoundRect(183, 100, 400, 300, 20, 20);
                g.setColor(Color.BLUE);
                g.setFont(asimov);
                g.drawString("Login", 345, 160);
                }catch(Exception e){}
                g.setColor(Color.BLACK);
                g.setFont(new Font("Arial", Font.PLAIN, 12));
                g.drawString("Username :", 200, 220);
                g.setColor(Color.WHITE);
                g.fillRect(270, 207, 290, 18);
                g.setColor(Color.BLACK);
                g.drawRect(270, 207, 290, 18);
                g.drawString(username, 273, 221);
               
        }

---

NOTE: This code has an empty catch() clause for an exception. POOR Technique. Add a println() to report any errors!


And the next question: What is the value of username when it is called?

Quote:

---

Originally Posted by Norm

Where does loginPaint() call any method to report it has been called?

Code:

---

public void loginPaint(Graphics g){
                try{
                  InputStream fin = this.getClass().getResourceAsStream("GlueRegular.ttf");
                  Font asimov = Font.createFont ( // Load font from InputStream fin
                    Font.PLAIN,
                    fin
                  ).deriveFont(60f);
                g.setColor(Color.LIGHT_GRAY);
                g.fillRoundRect(183, 100, 400, 300, 20, 20);
                g.setColor(Color.BLUE);
                g.setFont(asimov);
                g.drawString("Login", 345, 160);
                }catch(Exception e){}
                g.setColor(Color.BLACK);
                g.setFont(new Font("Arial", Font.PLAIN, 12));
                g.drawString("Username :", 200, 220);
                g.setColor(Color.WHITE);
                g.fillRect(270, 207, 290, 18);
                g.setColor(Color.BLACK);
                g.drawRect(270, 207, 290, 18);
                g.drawString(username, 273, 221);
               
        }

---

And the next question: What is the value of username when it is called?

---

username's value changes because I use it in my keylistener method:

Code:

---

public void keyTyped(KeyEvent ke) {
                drawLogin login = new drawLogin();
                sb.append(ke.getKeyChar());
                sM(sb.toString());
                sM(login.username);
        }

---

and there is no errors the empty catch, just checked it.

Quote:

---

What is the value of username when it is called?

---

Your assuming that your program is working the way you intend. Obviously it isn't.

What is the value of username when loginPaint is called?

Can I post my whole program here? Because I am so confused ! lol

Attached it.

Try debugging your code by adding println() statements in the constructors for the sub classes you are using.
Also add a println() statement to the loginPaint() method to show the value of username when it is called.
The output from these should show you some problems.

Quote:

---

Originally Posted by Norm

Try debugging your code by adding println() statements in the constructors for the sub classes you are using.
Also add a println() statement to the loginPaint() method to show the value of username when it is called.
The output from these should show you some problems.

---

Ok, maybe I need to refresh the panel so it can show the changes?

You need to consider how to debug your code. Using println()s is very useful.

You have several classes and methods that are called. Are you sure that they are the ones you are calling or could there be extra ones floating around? To test for that case, add println("constructor for xxx") in all the constructors.
To be sure that the draw method has the correct String to draw, do a println("username=" + username +"<"); just before calling draw

EDIT: Does the method has to be called after the username value is changed?

Quote:

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Does the method has to be called after the username value is changed

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What do you think?
If it is called before the change, then the old value would be there.

Ok, if you look at this:

Code:

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        public void runGPanel(){
                sM("Running game panel..");
                gamePanel = new JPanel(){
                       
                        private static final long serialVersionUID = 1L;
                       
                        public void paint(Graphics g){
                                sM("1");
                                g.fillRect(0, 0, 765, 503);
                                sM("2");
                                getPanels panel = new getPanels();
                                sM("3");
                                panel.setPanels(g);
                                sM("4");
                        }
                };
        }

---

When I start the program debuging works fine.

But when I use this method in:

Code:

---

        public void keyTyped(KeyEvent ke) {
                drawLogin login = new drawLogin();
                login.test = "OMG ROOODKF|km";
                runGPanel();
        }

---

it never gets called (I just get "Running game panel..")

Thanks for your help.

Sound like you need to do more debugging.

Quote:

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it never gets called

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What is the "it" you are talking about? Please don't use "it", use the name of the method etc
Where in your code is "it" supposed to get called? Why isn't the code that makes the call being executed?

Meh, I give up.