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POJava Simple Project handling Resources
 

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    <p>I have a simple java project and I have a class called Constants where I store all my required paths in static variables, like this for example:</p> <pre><code>public static final String PLAYFIELD_SMALL_IMAGE_PATH = Constants.class.getClassLoader().getResource("Player_Small.png").getPath(); </code></pre> <p>Works fine as long as I stay in my Eclipse ;)</p> <p>but when I export my program to a JAR file and start it I get an exception:</p> <pre><code>java.lang.ExceptionInInitializerError </code></pre> <p>it appears when I call the following for the first time:</p> <pre><code>Constants.PLAYFIELD_SMALL_IMAGE_PATH </code></pre> <p>If I start a second time I get this error:</p> <pre><code>java.lang.NoClassDefFound: Could not initalize class Constants </code></pre> <p>What am I actually doing wrong?</p> <p>EDIT 1:</p> <p>I found this one here : <a href="https://stackoverflow.com/questions/1401111/noclassdeffound-exception-could-not-initialize-class-error-help">&quot;NoClassDefFoundError: Could not initialize class&quot; error</a></p> <p>Seems to be exactly the same problem. So should I not use static variables?</p> <p>EDIT 2:</p> <p>If I use a static initializer block an ExceptionInInitializerError is thrown instantly. without a static initializer block I was able to get to the first menu of my program.</p> <p>EDIT 3:</p> <p>Maybe another hint! When I extract my jar all graphics are directly in the root-folder so i tried to use a relative path like this:</p> <pre><code>public static final String PLAYFIELD_SMALL_IMAGE_PATH = "Player_Small.png"; </code></pre> <p>But if i do so my graphic isnt loaded. </p>
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    1. COI think there is a problem in the way you created the jar with eclipse
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      1. USChristian Lendel
    2. COFile -> Export -> Runnable JAR file -> Choose Main and Export-Path -> Finish
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      1. USuser2663778
    3. COcan you check jar tf <your jar file> | grep Constants ... and see if the file exist in the jar
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      1. USMehul Rathod
 

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