Examples of java.net.URLClassLoader.findResource()

java.net.URLClassLoader.findResource()
Finds the resource with the specified name on the URL search path. @param name the name of the resource @return a URL for the resource, or null if the resource could not be found.

  private String readAppVersion() throws IOException {
    URLClassLoader cl = (URLClassLoader) getClass().getClassLoader();
    String ret = new String();
    
    try {
      URL url = cl.findResource("META-INF/MANIFEST.MF");
      Manifest mf = new Manifest(url.openStream());
      Attributes atts = mf.getMainAttributes();
      String impVersion = atts.getValue("Implementation-Version");
      String impBuild = atts.getValue("Implementation-Build");

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        URL[] urls = new URL[1];
        urls[0] = new URL("file:/" + resPath + "/JarIndex/hyts_11.jar");
        URLClassLoader ucl = URLClassLoader.newInstance(urls, null);


        URL resURL = ucl.findResource("Test.txt");
        URL reference = new URL("jar:file:/" + resPath.replace('\\', '/')
                + "/JarIndex/hyts_14.jar!/Test.txt");
        assertEquals("Resource not found: " + resURL + " ref: " + reference,
                reference, resURL);

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        }


        Support_Resources.copyFile(resources, "JarIndex", "hyts_22-new.jar");
        urls[0] = new URL("file:/" + resPath + "/JarIndex/hyts_22-new.jar");
        ucl = URLClassLoader.newInstance(urls, null);
        assertNotNull("Cannot find resource", ucl.findResource("cpack/"));
        Support_Resources.copyFile(resources, "JarIndex", "hyts_11.jar");
        urls[0] = new URL("file:/" + resPath + "/JarIndex/hyts_31.jar");
        ucl = URLClassLoader.newInstance(urls, null);


        try {

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        Enumeration en = urlClassloader.findResources("bpack/");
        assertTrue(en.hasMoreElements());
        URL expected = new URL("jar:file:/" + resPath.replace('\\', '/')
                + "/JarIndex/hyts_22.jar!/bpack/");
        assertEquals(expected, (URL) en.nextElement());
        assertEquals(expected, urlClassloader.findResource("bpack/"));
    }


    /**
     * @tests java.net.URLClassLoader#getResource(java.lang.String)
     */

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    /**
     * Regression for Harmony-2237
     */
    public void test_getResource() throws Exception {
        URLClassLoader urlLoader = getURLClassLoader();
        assertNull(urlLoader.findResource("XXX")); //$NON-NLS-1$
    }


    private static URLClassLoader getURLClassLoader() {
        String classPath = System.getProperty("java.class.path");
        StringTokenizer tok = new StringTokenizer(classPath, File.pathSeparator);

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          e.printStackTrace();
        }
        if (null == checker ||
        // || null != checker.findResource("java/lang/Object.class")
        // //$NON-NLS-1$
            null != checker.findResource("org/apache/uima/impl/UIMAFramework_impl.class")) { //$NON-NLS-1$
          continue;
        }
      }
      if (result.length() > 0)
        result = result.append(PATH_SEPARATOR);

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                    "/WEB-INF/beans.xml",
                    "/META-INF/beans.xml",
                };


                for (final String path : paths) {
                    if (loader.findResource(path) != null) {
                        return true;
                    }
                }
            } catch (final Exception e) {
                // no-op

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          e.printStackTrace();
        }
        if (null == checker ||
        // || null != checker.findResource("java/lang/Object.class")
        // //$NON-NLS-1$
            null != checker.findResource("org/apache/uima/impl/UIMAFramework_impl.class")) { //$NON-NLS-1$
          continue;
        }
      }
      if (result.length() > 0)
        result = result.append(PATH_SEPARATOR);

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      final URL url = pluginFile.toURI().toURL();


      pluginClassLoader = new URLClassLoader(new URL[] { url });


      // LOAD PLUGIN.JSON FILE
      final URL r = pluginClassLoader.findResource("plugin.json");
      if (r == null) {
        OLogManager.instance().error(this, "Plugin definition file ('plugin.json') is not found for dynamic plugin '%s'",
            pluginName);
        throw new IllegalArgumentException(String.format(
            "Plugin definition file ('plugin.json') is not found for dynamic plugin '%s'", pluginName));

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                    "/WEB-INF/beans.xml",
                    "/META-INF/beans.xml",
                };


                for (final String path : paths) {
                    if (loader.findResource(path) != null) {
                        return true;
                    }
                }
            } catch (final Exception e) {
                // no-op

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