Example usage for java.net URLClassLoader newInstance

Introduction

In this page you can find the example usage for java.net URLClassLoader newInstance.

Prototype

public static URLClassLoader newInstance(final URL[] urls) 

Source Link

Document

Creates a new instance of URLClassLoader for the specified URLs and default parent class loader.

Usage

From source file:info.novatec.testit.livingdoc.util.ClassUtils.java

public static ClassLoader toClassLoaderWithDefaultParent(Collection<String> classPaths)
        throws MalformedURLException {
    Set<URL> dependencies = new HashSet<URL>();
    for (String classPath : classPaths) {
        File dependency = new File(classPath);
        dependencies.add(dependency.toURI().toURL());
    }/*from w  w  w .j  a va 2  s  .c  o  m*/
    ClassLoader classLoader = URLClassLoader.newInstance(dependencies.toArray(new URL[dependencies.size()]));
    return classLoader;
}

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From source file:it.jnrpe.plugins.factory.CPluginFactory.java

/**
 * @deprecated/*from   ww  w  .  j av a  2 s  .c om*/
 */
private void configurePlugins(File fDir) {
    m_Logger.trace("READING PLUGIN CONFIGURATION FROM DIRECTORY " + fDir.getName());
    CStreamManager streamMgr = new CStreamManager();
    File[] vfJars = fDir.listFiles(new FileFilter() {

        public boolean accept(File f) {
            return f.getName().endsWith(".jar");
        }

    });

    // Initializing classloader
    URL[] urls = new URL[vfJars.length];
    URLClassLoader ul = null;

    for (int j = 0; j < vfJars.length; j++) {
        try {
            urls[j] = vfJars[j].toURI().toURL();
        } catch (MalformedURLException e) {
            // should never happen
        }
    }

    ul = URLClassLoader.newInstance(urls);

    for (int i = 0; i < vfJars.length; i++) {
        File file = vfJars[i];

        try {
            m_Logger.info("READING PLUGINS DATA IN FILE '" + file.getName() + "'");

            ZipInputStream jin = (ZipInputStream) streamMgr
                    .handle(new ZipInputStream(new FileInputStream(file)));
            ZipEntry ze = null;

            while ((ze = jin.getNextEntry()) != null) {
                if (ze.getName().equals("plugin.xml")) {
                    parsePluginXmlFile(jin);
                    break;
                }
            }
        } catch (Exception e) {
            m_Logger.error("UNABLE TO READ DATA FROM FILE '" + file.getName() + "'. THE FILE WILL BE IGNORED.",
                    e);
        } finally {
            streamMgr.closeAll();
        }

    }
}

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From source file:de.xirp.ate.ATEManager.java

/**
 * Executes the a the <code>algorithm( )</code> method from a
 * given class, which is indicated by is name.
 * //w  w  w  .j a va 2  s . c  o m
 * @param className
 *            The class to execute the method from.
 */
public static void execute(String className) {
    File clazz = new File(Constants.MAZE_CODE_DIR);
    try {
        URLClassLoader classLoader = URLClassLoader.newInstance(new URL[] { clazz.toURI().toURL() });
        Class<?> forName = Class.forName(className, true, classLoader);
        Method declaredMethod = forName.getDeclaredMethod("algorithm", new Class[0]); //$NON-NLS-1$
        declaredMethod.invoke(forName.newInstance(), new Object[0]);
    } catch (Exception e) {
        logClass.error("Error: " + e.getMessage() + Constants.LINE_SEPARATOR, e); //$NON-NLS-1$
    }
}

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From source file:gdt.data.entity.facet.ExtensionHandler.java

private static FacetHandler[] listExtensionHandlers(Entigrator entigrator, String extension$) {
    try {//from www . j a v a  2  s.  c o  m
        System.out.println("ExtesionHandler:listExtensionHandlers:extension=" + extension$);
        Sack extension = entigrator.getEntityAtKey(extension$);
        String lib$ = extension.getElementItemAt("field", "lib");
        String[] sa = extension.elementList("content.fhandler");
        if (sa == null)
            return null;

        ArrayList<FacetHandler> fl = new ArrayList<FacetHandler>();
        FacetHandler fh;
        Class<?> cls;
        String jar$ = "jar:file:" + entigrator.getEntihome() + "/" + extension$ + "/" + lib$ + "!/";
        URL[] urls = { new URL(jar$) };
        URLClassLoader cl = URLClassLoader.newInstance(urls);
        for (String aSa : sa) {
            try {
                //         System.out.println("ExtesionHandler:listExtensionHandlers:jar="+jar$);
                cls = cl.loadClass(aSa);
                fh = (FacetHandler) cls.newInstance();
                fl.add(fh);
            } catch (Exception ee) {
                Logger.getLogger(ExtensionHandler.class.getName()).severe("load class: " + ee.toString());
            }
        }
        return fl.toArray(new FacetHandler[0]);
    } catch (Exception e) {
        Logger.getLogger(ExtensionHandler.class.getName()).severe(e.toString());
        return null;
    }
}

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From source file:org.callimachusproject.behaviours.SqlDatasourceSupport.java

private ClassLoader createClassLoader() {
    List<URL> urls = new ArrayList<URL>();
    for (RDFObject jar : this.getCalliDriverJar()) {
        try {//from  w w w.j av  a2  s  .c om
            urls.add(new URL(jar.getResource().stringValue()));
        } catch (MalformedURLException e) {
            logger.warn(e.toString(), e);
        }
    }
    return URLClassLoader.newInstance(urls.toArray(new URL[urls.size()]));
}

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From source file:com.datatorrent.stram.StramLocalClusterTest.java

@Test
public void testDynamicLoading() throws Exception {
    String generatedJar = generatejar("POJO");
    URLClassLoader uCl = URLClassLoader.newInstance(new URL[] { new File(generatedJar).toURI().toURL() });
    Class<?> pojo = uCl.loadClass("POJO");

    DynamicLoaderApp app = new DynamicLoaderApp();
    app.generatedJar = generatedJar;//from ww  w. j  ava2  s . c  o m
    app.pojo = pojo;

    LocalMode lma = LocalMode.newInstance();
    lma.prepareDAG(app, new Configuration());
    LocalMode.Controller lc = lma.getController();
    lc.runAsync();
    DynamicLoaderApp.latch.await();
    Assert.assertTrue(DynamicLoaderApp.passed);
    lc.shutdown();
}

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From source file:org.pentaho.ui.xul.impl.AbstractXulLoader.java

private URLClassLoader getLocalDirClassLoader() throws MalformedURLException {
    if (localDirClassLoader == null) {
        final URL url = new File(".").toURI().toURL();
        localDirClassLoader = URLClassLoader.newInstance(new URL[] { url });
    }/* w  w  w . j a  va  2 s  .c  om*/
    return localDirClassLoader;
}

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From source file:com.datatorrent.stram.client.StramAppLauncher.java

/**
 * Scan the application jar file entries for configuration classes.
 * This needs to occur in a class loader with access to the application dependencies.
 *///from  w w w  . jav a  2s.  c om
private void findAppConfigClasses(List<String> classFileNames) {
    URLClassLoader cl = URLClassLoader
            .newInstance(launchDependencies.toArray(new URL[launchDependencies.size()]));
    for (final String classFileName : classFileNames) {
        final String className = classFileName.replace('/', '.').substring(0, classFileName.length() - 6);
        try {
            final Class<?> clazz = cl.loadClass(className);
            if (!Modifier.isAbstract(clazz.getModifiers())
                    && StreamingApplication.class.isAssignableFrom(clazz)) {
                final AppFactory appConfig = new AppFactory() {
                    @Override
                    public String getName() {
                        return classFileName;
                    }

                    @Override
                    public String getDisplayName() {
                        ApplicationAnnotation an = clazz.getAnnotation(ApplicationAnnotation.class);
                        if (an != null) {
                            return an.name();
                        } else {
                            return classFileName;
                        }
                    }

                    @Override
                    public LogicalPlan createApp(LogicalPlanConfiguration conf) {
                        // load class from current context class loader
                        Class<? extends StreamingApplication> c = StramUtils.classForName(className,
                                StreamingApplication.class);
                        StreamingApplication app = StramUtils.newInstance(c);
                        LogicalPlan dag = new LogicalPlan();
                        conf.prepareDAG(dag, app, getName());
                        return dag;
                    }

                };
                appResourceList.add(appConfig);
            }
        } catch (Throwable e) { // java.lang.NoClassDefFoundError
            LOG.error("Unable to load class: " + className + " " + e);
        }
    }
}

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From source file:com.datatorrent.stram.client.StramAppLauncher.java

public URLClassLoader loadDependencies() {
    URLClassLoader cl = URLClassLoader
            .newInstance(launchDependencies.toArray(new URL[launchDependencies.size()]));
    Thread.currentThread().setContextClassLoader(cl);
    StringCodecs.check();/*from  w  w w  .  java2  s  .  co m*/
    return cl;
}

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From source file:com.consol.citrus.admin.service.TestCaseService.java

private ClassLoader getTestClassLoader(Project project) throws IOException {
    List<URL> classpathUrls = new ArrayList<>();

    classpathUrls.add(new FileSystemResource(
            project.getProjectHome() + File.separator + "target" + File.separator + "classes").getURL());
    classpathUrls.add(new FileSystemResource(
            project.getProjectHome() + File.separator + "target" + File.separator + "test-classes").getURL());

    File[] mavenDependencies = Maven.configureResolver().workOffline()
            .loadPomFromFile(project.getMavenPomFile()).importRuntimeAndTestDependencies().resolve()
            .withTransitivity().asFile();

    for (File mavenDependency : mavenDependencies) {
        classpathUrls.add(new FileSystemResource(mavenDependency).getURL());
    }//from   w  w w.j  av a  2 s. c o  m

    return URLClassLoader.newInstance(classpathUrls.toArray(new URL[classpathUrls.size()]));
}

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