How do i get an applet to run on my IMac?
I am in a Java Programming class and have to write an applet for my homework using NetBeans.
It only shows a frame with applet not Initialized message.
What am I doing wrong?
https://discussions.apple.com/message/15521278#15521278
Similar Messages
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Need help getting my applet to run..
Hi, I am having the utmost trouble getting my applet to run. First I spent a month correcting syntax and other errors generated during compile. Now I find myself spending another month getting the compiled product to run. I don't care if the screen is completely blank and my logic is all messed up, I don't mind logic debugging. My applet just will not run at all, it won't even initialize.
First when I tried to run my applet in Internet Explorer I got the following error in the statusbar:
"load: tsorgi5 can't be instantiated"
So, I researched that error message, and the solution appeared to be that I would need to use the Java Plug-In. So, I use that and now I find this message in the statusbar:
"exception: null."
That happens when the text "Loading Java Applet ..." is in the centre of the applet, and Internet Explorer acts like it is still doing something no matter how long I wait.
I tried researching this, but only found "exception: null" with other things after the text "null."
In Forte, when I choose "Execute" I get the following in the Output Window, I/O tab:
java.lang.NoSuchMethodError: main
Exception in thread "main"
I would assume it expects me to add a method "main()," but I also get that same message with a different applet (which doesn't have a method "main()") which runs perfectly fine.
I usually try to solve many of my problems myself, but with this one I have no idea where to start looking for answers. I'm relatively new to Java, been using Java for only half a year, so this particular problem is like looking for a four-leaf clover in the streets of New York City..
I'm going to be chopping my applet into pieces, having a separate class file for each major engine. (It is a role-playing game, so I'll separate battle engine from cut-scene engine from world exploration engine etc..) Hopefully I will be able to narrow down my search for what is causing me all of these problems. Then once I solve my problems I can piece everything back together.
In the meantime, I am hoping that some of you could help me out so that I may know what I am looking for.
Thank You for your time,
-Tony SlaterAh.. Forte is still a bit confusing to me, I have not and probably will not take the time to learn much about Forte, as the only real reason I use it is because unlike wordpad, I can see line numbers. =] Very helpful with my program being the size that it is.
I do not think that the simple applet idea will be of much use, because one of my earlier applet projects (a main menu for my current project) which I mentioned above as another applet without a main() method which worked perfectly fine is very simple. Although I will try it anyway, as it could help and you are most likely much more experienced than I. =]
Okay, I typed the following in the Dos Prompt:
appletviewer TestApplet.class
..It printed a blank line, paused a little bit, then brought me back to the prompt, just like running a dos program that does not give any output. I'm not sure, but I would assume it should print a line containing the text "Here?" I have not used appletviewer before, so I do not know what it is supposed to do. =P
I have already tried using System.out.println, but the problem occours even before the applet is started. I'll try enabling the Java Console first thing tomorrow morning, since a restart is required when enabling it.
Now, I would be happy to post some code, but I'm not sure it would be best to post the code when my program is 2814 lines.. although 800 lines are probably comments, and most of those comments are probably irrelevant. Also I can sometimes be a messy coder. Although I can post some general information and can probably (with a little work) post an "outline" of the code.
Since it is getting late I'll just post some portions of code which hopefully will prove important.
// Import Packages
import java.awt.Graphics;
import java.awt.Color;
import java.awt.*;
import java.applet.*;
import java.lang.System;
import java.lang.reflect.Array;
import java.lang.Math;
import java.lang.Double;
import java.math.*;
import java.util.Random;
import java.io.*;
variable/object types created and/or declared between "public class.." and "public void init()...":
int
byte[]
String
RandomAccessFile
int[][]
double
int[]
double[][][]
Random
Image
int[][][]
arrays are filled in the init() method.
public String getIniStrValue(String iniFile, String iniGroup, String iniItem) // Used for retrieving information from the game's external file system.
another method getIniIntValue(int, String, String, String) is used for int values stored in external files.
Within public void paint(), gameplay modes are detected and dealt with accordingly. With Cut-Scenes, proper charecter images and text is displayed, all cut-scene information is stored externally. Other modes do virtually the same, display graphics and text based on internal game data or un-changing external data files.
Within public void mouseClick(), in certain modes of the game the mouse click will trigger a change no matter where the user clicked (such as cut-scenes, to advance to the next line of dialog), or different variables are set depending on where the user clicked. (What I like to call.. custom buttons) At the end of the method repaint(); is used, and the paint() method will alter the screen according to any changes that may have happened.
public void charAttack() is a method called to handle battle equations when a playable and controllable charecter is making a move. It will detect the current charecter, detect the move being made by the charecter (attack, special move, magic, etc) and will change any variables accordingly and will then use repaint(); so that the player may know what has happened. (Whether or not attack was successful, how many HP the enemy lost, etc)
public void loadBattle() is called when the charecter encounters an enemy. It will load possible enemies of the current part of the world being explored, select one, then load that enemy's "stats" from external game data files, and will then specify the new mode (Battle Menu, where the player chooses the moves to be made for the turn) by setting the int value "Mode." repaint(); is then called and it will paint the battle menu.
public boolean keyDown() is of course used to detect keyboard events. In world exploration, the charecter will be moved accordingly. In modes such as cut-scenes, a variable will be changed to advance to the next line of speech. In menus, the keyboard events are used to switch between options. repaint(); is used to update the screen accordingly.
Well, even though I very briefly summarized the code, it appears to have taken half an hour to do. I'll be getting some sleep in a few minutes, and when I wake up tomorrow morning I hope to both see and make some progress on solving this problem.
Thank You,
-Tony Slater. -
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I have a DHMTL page with a panel that I want to slide back and forth. But another part of the requirement is to have the panel look like it is sliding under another panel.
The problem is that an applet is on the panel that slides. When the sliding panel move under the stationary panel the applet does not go under the stationary panel, but the reset of the sliding panel does render looking like it is sliding under.
See below.
- ~~~~~~~~~~~~~~~~~~~~~~~~ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ -
- ~ ~ ^ ^ -
- ~ ~ ^ ^ -
- ~ #############*************** ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ #############^************** ^ -
- ~ ~ ^ ^ -
- ~ ~ ^ ^ -
- ~ ~ ^ ^ -
- ~~~~~~~~~~~~~~~~~~~~~~~~ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ -
~ has a z-index of 1
# and * have a z-index 2
# shows above ~ and below ^
^ has a z-index of 3What I am getting with the applet on the panel with a z-index of 2 is the following
- ~~~~~~~~~~~~~~~~~~~~~~~~ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ -
- ~ ~ ^ ^ -
- ~ ~ ^ ^ -
- ~ #############*************** ^ -
- ~ # ^ * ^ -
- ~ # @@@@@@@@@@@@@@@@@@@@ * ^ -
- ~ # @ @ * ^ -
- ~ # @ @ * ^ -
- ~ # @ @ * ^ -
- ~ # @ @ * ^ -
- ~ # @ @ * ^ -
- ~ # @ @ * ^ -
- ~ # @@@@@@@@@@@@@@@@@@@@ * ^ -
- ~ # ^ * ^ -
- ~ # ^ * ^ -
- ~ #############^************** ^ -
- ~ ~ ^ ^ -
- ~ ~ ^ ^ -
- ~ ~ ^ ^ -
- ~~~~~~~~~~~~~~~~~~~~~~~~ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ -
--------------------------------------------------------Where @ is the applet. Notice how the applet is on top of the ^ but the panel under it, ^, is under like it should be. All the panels are 1x1 tables with a border. So how can I get the applet on the drawing shown with # and * to follow the rendering of the z-index of 2?Hi,
I have the same problem, and don't know how to solve it, So, i had tried to put my applet in a div tag wih z-index=0, but it still hide my other Dhtml divs with bigger Z-index (z-index =1000)
Have you any idea to solve this.
Thanks
Hakim -
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