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POwhat is the difference between reading a resource from the class versus class loader?
 

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  1. POwhat is the difference between reading a resource from the class versus class loader?
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    <p>I am trying to read a text file, "text.txt", packaged at the root as a part of my jar file. in one case, my code calls <code>class.getResourceAsStream("/test.txt")</code> and in another case, my code calls <code>class.getClassLoader().getResourceAsStream("/test.txt")</code>. </p> <p>The first call gets the correct data but the second one doesn't get anything. any idea?</p> <pre><code>public static void main(String[] args) { InputStream is = null; try { is = TestLoadResourcesByClass.class.getResourceAsStream("/test.txt"); StringWriter writer = new StringWriter(); IOUtils.copy(is, writer); System.out.println(writer.toString()); } catch(Exception ex) { ex.printStackTrace(); } finally { if(null != is) { try { is.close(); } catch(Exception ex) { } } } } public static void main(String[] args) { InputStream is = null; try { is = TestLoadResourcesByClassLoader.class.getClassLoader().getResourceAsStream("/test.txt"); StringWriter writer = new StringWriter(); IOUtils.copy(is, writer); System.out.println(writer.toString()); } catch(Exception ex) { ex.printStackTrace(); } finally { if(null != is) { try { is.close(); } catch(Exception ex) { } } } </code></pre> <p>let's say i have 2 jar files</p> <ul> <li>first.jar : contains TestLoadResourcesByClass.class (code to read test.txt)</li> <li>second.jar : contains "test.txt" at the root </li> </ul> <p>and then i run my code as follows</p> <pre><code>java -cp first.jar;second.jar;commons-io-2.4.jar test.TestLoadByClass </code></pre> <p>i also get no output at the console. is that because the classes/resources in second.jar have not been loaded? in fact, i get a null pointer exception (input stream is null).</p> <p>any idea on what's going on?</p>
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    1. USJane Wayne
    1. USJane Wayne
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    1. COYou can place inline code in a codeblock using `\`` or by clicking the `{}` button at the top.
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      1. POwhat is the difference between reading a resource from the class versus class loader?
      1. USJeroen Vannevel
    2. COsorry guys, so is complaining about my formatting, which i have already did the 4 space thing, still no luck.
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      1. USJane Wayne
    3. COA way to debug this is to call `xxx.getResource("/")` which should tell you where you are looking for the resource to stream.
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      1. USBevynQ
 

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