Thread: Extract Java project as runnable jar file?

Hello, I'm completely new to these forums so I apologize if this isn't the correct section.

I have an old platformer project I worked on a couple of years ago and I would really like to extract it as an executable jar file or regular executable file, the project runs perfectly whenever I launch it from eclipse, but when I try to export it as a runnable JAR file it doesn't seem to load at all, and when I use Launch4j to convert it to a regular executable file it seems to crash on loadup. Unfortunately I can't get any error messages out of it in its .exe file either.

I tried following a guide on how to do it (unfortunately it seems I'm not allowed to include any links of any kind?), where I simply right-clicked the project, took export, Java, Runnable JAR file, and after that I've tried all three Library handling options, and then used Launch4j to convert it to an executable, but gotten none of them to work past crashing at the loading screen.

Does anyone by chance know what I'm doing wrong?

Hello!

Unfortunately, the .jar file doesn't seem to launch at all, the command prompt only prints out:
C:\Users\LoraM\Desktop>java -jar Platformer.jar
Error: Unable to access jarfile Platformer.jar

Ah, it didn't work from the desktop for some reason? I moved it to my documents folder and now it crashed in the loading screen, appears to be at least one of the files that aren't loading correctly even though it works when I run it from Eclipse?

C:\Users\LoraM\Documents>java -jar Platformer.jar
java.lang.IllegalArgumentException: input == null!
at javax.imageio.ImageIO.read(Unknown Source)
at Main.Content.load(Content.java:330)
at Main.Content.<clinit>(Content.java:151)
at Main.GamePanel.run(GamePanel.java:150)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-3" java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Unknown Source)
at java.io.ByteArrayOutputStream.grow(Unknown Source)
at java.io.ByteArrayOutputStream.ensureCapacity(Unkno wn Source)
at java.io.ByteArrayOutputStream.write(Unknown Source)
at com.sun.media.sound.DirectAudioDevice$DirectClip.o pen(Unknown Source)
at Audio.JukeBox.load(JukeBox.java:75)
at Main.Content.loadContent(Content.java:287)
at Main.GamePanel.run(GamePanel.java:150)
at java.lang.Thread.run(Unknown Source)

Hm that's problematic, from what I can tell the files are inside the .jar file, but as you said their relative space might be different, which is troublesome.

	public static BufferedImage[][] load(String filePath, int width, int height)
	{
		BufferedImage[][] ret;
		try
		{
			BufferedImage spritesheet = ImageIO.read(Content.class.getResourceAsStream(filePath)); // <-- Line 330
			int newWidth = spritesheet.getWidth() / width;
			int newHeight = spritesheet.getHeight() / height;
			ret = new BufferedImage[newHeight][newWidth];
 
			for(int i = 0; i < newHeight; i++)
			{
				for(int j = 0; j < newWidth; j++)
				{
					ret[i][j] = spritesheet.getSubimage(j * width,  i * height,  width,  height);
				}
			}
			return ret;
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
		return null;
	}

Although when I open it up it looks like the attached image where the correct folders seem to be, so it feels like it should be able to find the files?

public static BufferedImage[][] CartoonExplosion 		= load("/Art/Sprites/Effects/CartoonExplosion.gif", 60, 60);

HXipYXv.jpg

It runs through a lot of files, but I think that it failed because of a spelling error, one of the files was called EditVolumeBUtton instead of EditVolumeButton in the resouces. When I changed that I got a new error in its place:

Microsoft Windows [Version 10.0.17134.885]
(c) 2018 Microsoft Corporation. All rights reserved.
 
C:\WINDOWS\system32>cd C:\Users\LoraM\Documents
 
C:\Users\LoraM\Documents>java -jar Platformer.jar
filePath: /Art/Sprites/Effects/CartoonExplosion.gif
filePath: /Art/Sprites/Effects/FireBallLargeExplosion.png
filePath: /Art/Sprites/Effects/FireBallLargeExplosion.png
filePath: /Art/Sprites/Effects/ElectricBallExplosion.png
filePath: /Art/Sprites/Effects/ArcaneBallExplosion.png
filePath: /Art/Sprites/Effects/BombExplosion.png
filePath: /Art/Sprites/Effects/FireBallLarge.png
filePath: /Art/Sprites/Effects/FireBallMediumNew.png
filePath: /Art/Sprites/Effects/FireBallSmall.png
filePath: /Art/Sprites/Effects/FireBallSwirling.png
filePath: /Art/Sprites/Effects/FireBallDouble.png
filePath: /Art/Sprites/Effects/ElectricBall.png
filePath: /Art/Sprites/Effects/ElectricBallChargeUp.png
filePath: /Art/Sprites/Effects/ArcaneBall.png
filePath: /Art/Sprites/Characters/slugger.gif
filePath: /Art/Sprites/Characters/Succubus.png
filePath: /Art/Sprites/Characters/Lora.png
filePath: /Art/Sprites/Characters/Bunny.png
filePath: /Art/Sprites/Doodads/Sign.png
filePath: /Art/Sprites/Doodads/SignLeft.png
filePath: /Art/Sprites/Doodads/SignRight.png
filePath: /Art/Sprites/Doodads/Mushroom01.png
filePath: /Art/Sprites/Doodads/Mushroom02.png
filePath: /Art/Sprites/Doodads/Torch.png
filePath: /Art/Sprites/Doodads/Waterfall.png
filePath: /Art/Sprites/Doodads/ChestCommonClosed.png
filePath: /Art/Sprites/Doodads/ChestCommonOpening.png
filePath: /Art/Sprites/Doodads/ChestCommonOpened.png
filePath: /Art/Sprites/Doodads/ChestUncommonClosed.png
filePath: /Art/Sprites/Doodads/ChestUncommonOpening.png
filePath: /Art/Sprites/Doodads/ChestUncommonOpened.png
filePath: /Art/Sprites/Doodads/ChestRareClosed.png
filePath: /Art/Sprites/Doodads/ChestRareOpening.png
filePath: /Art/Sprites/Doodads/ChestRareOpened.png
filePath: /Art/Sprites/Doodads/CaveEntrance.png
filePath: /Art/Sprites/Doodads/Shrine.png
filePath: /Art/Sprites/Doodads/StatueSave.png
filePath: /Art/Sprites/Doodads/KeyUncommon.png
filePath: /Art/Sprites/Doodads/KeyRare.png
filePath: /Art/Sprites/Doodads/KeyBoss.png
filePath: /Art/Sprites/Doodads/PotionHealth.png
filePath: /Art/Sprites/Doodads/PotionMana.png
filePath: /Art/Sprites/Doodads/PotionStamina.png
filePath: /Art/Sprites/Doodads/CoinSilver.png
filePath: /Art/Sprites/Doodads/CoinGold.png
filePath: /Art/Sprites/Doodads/DoorBossClosed.png
filePath: /Art/Sprites/Doodads/DoorBossOpening.png
filePath: /Art/Sprites/Doodads/DoorBossOpened.png
filePath: /Art/Sprites/Doodads/Portal.png
filePath: /Art/Sprites/Doodads/DoorVillageSquareClosed.png
filePath: /Art/Sprites/Doodads/DoorVillageSquareOpening.png
filePath: /Art/Sprites/Doodads/DoorVillageSquareOpened.png
filePath: /Art/Sprites/Doodads/CampFire.png
filePath: /Art/Sprites/Doodads/LeverOpened.png
filePath: /Art/Sprites/Doodads/LeverClosed.png
filePath: /Art/Sprites/Doodads/LeverOpening.png
filePath: /Art/Sprites/Doodads/LeverClosing.png
filePath: /Art/Sprites/Doodads/HerbSun.png
filePath: /Art/HUD/EmotionBubbleExclamation.png
filePath: /Art/Sprites/Doodads/BagSmall.png
filePath: /Art/Sprites/Doodads/BagMedium.png
filePath: /Art/Sprites/Doodads/Bomb.png
filePath: /Art/Sprites/Doodads/BombExploding.png
filePath: /Art/Sprites/Effects/Teleport.png
filePath: /Art/Sprites/Effects/MagicShield.png
filePath: /Art/Sprites/Effects/Poff.png
filePath: /Art/Sprites/Effects/RainDrop.png
filePath: /Art/HUD/Foregrounds/GameOver.png
filePath: /Art/HUD/Foregrounds/Conversation GUI.png
filePath: /Art/HUD/Foregrounds/ConversationGUIEndConversation.png
filePath: /Art/HUD/Foregrounds/InventorySquare.png
filePath: /Art/HUD/Foregrounds/InventoryBackground.png
filePath: /Art/HUD/Foregrounds/OptionConfirm.png
filePath: /Art/HUD/Foregrounds/OptionDecline.png
filePath: /Art/HUD/Foregrounds/OptionBackground.png
filePath: /Art/HUD/Bars/BarFrame.png
filePath: /Art/HUD/Bars/HealthBar.png
filePath: /Art/HUD/Bars/PlayerHealthBar.png
filePath: /Art/HUD/Bars/PlayerManaBar.png
filePath: /Art/HUD/Bars/PlayerStaminaBar.png
filePath: /Art/HUD/Bars/PlayerBar.png
filePath: /Art/HUD/Foregrounds/BuffIcon.png
filePath: /Art/HUD/SpellIcons/BuffDry.png
filePath: /Art/HUD/SpellIcons/BuffWet.png
filePath: /Art/HUD/SpellIcons/BuffSoaked.png
filePath: /Art/HUD/SpellIcons/BuffFreezing.png
filePath: /Art/HUD/SpellIcons/BuffCold.png
filePath: /Art/HUD/SpellIcons/BuffWarm.png
filePath: /Art/HUD/SpellIcons/BuffHot.png
filePath: /Art/HUD/Portraits/PortraitPlayer.png
filePath: /Art/HUD/Portraits/PortraitSuccubus.png
filePath: /Art/HUD/Portraits/PortraitEmpty.png
filePath: /Art/HUD/Portraits/PortraitCampFire.png
filePath: /Art/HUD/Portraits/PortraitChestCommon.png
filePath: /Art/HUD/Portraits/PortraitChestUncommon.png
filePath: /Art/HUD/Portraits/PortraitChestRare.png
filePath: /Art/HUD/Portraits/PortraitKeyUncommon.png
filePath: /Art/HUD/Portraits/PortraitKeyRare.png
filePath: /Art/HUD/Portraits/PortraitKeyBoss.png
filePath: /Art/HUD/Portraits/PortraitLever.png
filePath: /Art/HUD/Portraits/PortraitPotionHealing.png
filePath: /Art/HUD/Portraits/PortraitPotionMana.png
filePath: /Art/HUD/Portraits/PortraitPotionStamina.png
filePath: /Art/HUD/Portraits/PortraitShrine.png
filePath: /Art/HUD/Portraits/PortraitSign.png
filePath: /Art/HUD/Portraits/PortraitStatueSave.png
filePath: /Art/HUD/Portraits/PortraitDoorBoss.png
filePath: /Art/HUD/Portraits/PortraitDoorVillage.png
filePath: /Art/HUD/Portraits/PortraitBagSmall.png
filePath: /Art/HUD/Portraits/PortraitBagMedium.png
filePath: /Art/HUD/Portraits/PortraitBomb.png
filePath: /Art/HUD/Buttons/EditKeyBindingButton.png
filePath: /Art/HUD/Buttons/EditVolumeButton.png
filePath: /Art/HUD/Buttons/ExitButton.png
Exception in thread "Thread-3" java.lang.OutOfMemoryError: Java heap space
        at java.util.Arrays.copyOf(Unknown Source)
        at java.io.ByteArrayOutputStream.grow(Unknown Source)
        at java.io.ByteArrayOutputStream.ensureCapacity(Unknown Source)
        at java.io.ByteArrayOutputStream.write(Unknown Source)
        at com.sun.media.sound.DirectAudioDevice$DirectClip.open(Unknown Source)
        at Audio.JukeBox.load(JukeBox.java:75)
        at Main.Content.loadContent(Content.java:287)
        at Main.GamePanel.run(GamePanel.java:150)
        at java.lang.Thread.run(Unknown Source)

I'm not sure, is there an easy way to check? And what is the limit of JVM?

The folder holding all of the art is only 11.4 MB, the Sound folder is 16.6 MB, but the total size of the jar file is 2.31 GB.

My bad somehow checked the wrong file, the jar file is only about 27.1 MB, which makes a lot more sense since there shouldn't be anything except the art, sounds and code in there.

Where do I enter the java command? In the project or does the JVM have its own settings?

Hm, I tried using all three, both together and separately at 80MB but I keep getting the same error.

Microsoft Windows [Version 10.0.17134.885]
(c) 2018 Microsoft Corporation. All rights reserved.
 
C:\WINDOWS\system32>cd C:\Users\LoraM\Documents
 
C:\Users\LoraM\Documents>java -Xms80M -Xmx80M -jar Platformer.jar
Exception in thread "Thread-3" java.lang.OutOfMemoryError: Java heap space
        at java.io.PushbackInputStream.<init>(Unknown Source)
        at javazoom.spi.mpeg.sampled.file.MpegAudioFileReader.getAudioFileFormat(Unknown Source)
        at org.tritonus.share.sampled.file.TAudioFileReader.getAudioInputStream(TAudioFileReader.java:360)
        at org.tritonus.share.sampled.file.TAudioFileReader.getAudioInputStream(TAudioFileReader.java:315)
        at javazoom.spi.mpeg.sampled.file.MpegAudioFileReader.getAudioInputStream(Unknown Source)
        at javax.sound.sampled.AudioSystem.getAudioInputStream(Unknown Source)
        at Audio.JukeBox.load(JukeBox.java:60)
        at Main.Content.loadContent(Content.java:223)
        at Main.GamePanel.run(GamePanel.java:150)
        at java.lang.Thread.run(Unknown Source)

This is line 287, which simply loads one of the sound files:

JukeBox.load("/Sound/Music/Tutorial.mp3", 									"Tutorial");

Which loads this:

	public static void load(String string, String n)
	{
		if(allSounds == null) initialize();
		if(allSounds.get(n) != null) return;
		Clip clip;
		try
		{
			AudioInputStream audioInputStream = 
					AudioSystem.getAudioInputStream(
							JukeBox.class.getResourceAsStream(string));
			AudioFormat baseFormat = audioInputStream.getFormat();
			AudioFormat decodeFormat = new AudioFormat(
					AudioFormat.Encoding.PCM_SIGNED,
					baseFormat.getSampleRate(), 
					16,
					baseFormat.getChannels(),
					baseFormat.getChannels() * 2,
					baseFormat.getSampleRate(),
					false
					);
 
			AudioInputStream decodeAudioInputStream = AudioSystem.getAudioInputStream(decodeFormat, audioInputStream);
			clip = AudioSystem.getClip();
			clip.open(decodeAudioInputStream); // <-- Line 75
			allSounds.put(n, clip);
 
 
			if(string.contains(soundCategories.Music.toString()))
			{
				musicSounds.put(n, clip);
			}
			if(string.contains("CharacterSounds"))
			{
				characterSounds.put(n, clip);
			}
			if(string.contains("Doodads"))
			{
				effectSounds.put(n, clip);
			}
			if(string.contains("SpellEffects"))
			{
				effectSounds.put(n, clip);
			}
			if(string.contains("BackgroundSound"))
			{
				backgroundSounds.put(n, clip);
			}
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}

That made it work with the command prompt!
Is there any way to tell the JVM to hold more so it can load the file by simply double-clicking it? Or is there anything I can change in the code to make it work?