Example usage for java.lang Class getClassLoader

Introduction

In this page you can find the example usage for java.lang Class getClassLoader.

Prototype

@CallerSensitive
@ForceInline 
public ClassLoader getClassLoader() 

Source Link

Document

Returns the class loader for the class.

Usage

From source file:org.bonitasoft.engine.io.IOUtil.java

public static byte[] getClassData(final Class<?> clazz) throws IOException {
    if (clazz == null) {
        final String message = "Class is null";
        throw new IOException(message);
    }/*from w  w w.ja  va 2 s  . c o m*/
    final String resource = clazz.getName().replace('.', '/') + ".class";
    byte[] data;
    try (InputStream inputStream = clazz.getClassLoader().getResourceAsStream(resource)) {
        if (inputStream == null) {
            throw new IOException(
                    "Impossible to get stream from class: " + clazz.getName() + ", className= " + resource);
        }
        data = IOUtil.getAllContentFrom(inputStream);
    }
    return data;
}

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From source file:biz.bokhorst.xprivacy.Util.java

public static void logStack(XHook hook, int priority, boolean cl) {
    StringBuilder trace = new StringBuilder();
    ClassLoader loader = Thread.currentThread().getContextClassLoader();
    for (StackTraceElement ste : Thread.currentThread().getStackTrace()) {
        trace.append(ste.toString());// www  .j a  va  2 s  . c  om
        if (cl)
            try {
                Class<?> clazz = Class.forName(ste.getClassName(), false, loader);
                trace.append(" [");
                trace.append(clazz.getClassLoader().toString());
                trace.append("]");
            } catch (ClassNotFoundException ignored) {
            }
        trace.append("\n");
    }
    log(hook, priority, trace.toString());
}

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From source file:org.apache.jxtadoop.ipc.RPC.java

/** Construct a client-side proxy object that implements the named protocol,
 * talking to a server at the named address. */
public static VersionedProtocol getProxy(Class<?> protocol, long clientVersion, PeerGroup pg,
        JxtaSocketAddress jsocka, UserGroupInformation ticket, Configuration conf, SocketFactory factory)
        throws IOException {

    VersionedProtocol proxy = (VersionedProtocol) Proxy.newProxyInstance(protocol.getClassLoader(),
            new Class[] { protocol }, new Invoker(pg, jsocka, ticket, conf, factory));

    long serverVersion = proxy.getProtocolVersion(protocol.getName(), clientVersion);

    if (serverVersion == clientVersion) {
        return proxy;
    } else {//from w w  w  . ja  va2s . c  o m
        throw new VersionMismatch(protocol.getName(), clientVersion, serverVersion);
    }
}

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From source file:org.hibernate.internal.util.ReflectHelper.java

/**
 * Perform resolution of a class name.//w  w  w. ja  v a  2  s  .  co m
 * <p/>
 * Here we first check the context classloader, if one, before delegating to
 * {@link Class#forName(String, boolean, ClassLoader)} using the caller's classloader
 *
 * @param name The class name
 * @param caller The class from which this call originated (in order to access that class's loader).
 * @return The class reference.
 * @throws ClassNotFoundException From {@link Class#forName(String, boolean, ClassLoader)}.
 */
public static Class classForName(String name, Class caller) throws ClassNotFoundException {
    try {
        ClassLoader classLoader = ClassLoaderHelper.getContextClassLoader();
        if (classLoader != null) {
            return classLoader.loadClass(name);
        }
    } catch (Throwable ignore) {
    }
    return Class.forName(name, true, caller.getClassLoader());
}

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From source file:org.eclipse.che.vfs.impl.fs.LocalFileSystemTest.java

private static void enableAssertion(Class<?> clazz) {
    clazz.getClassLoader().setPackageAssertionStatus(clazz.getPackage().getName(), true);
}

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From source file:Loader.java

public static ResourceBundle getResourceBundle(Class loadClass, String name, boolean checkParents,
        Locale locale) throws MissingResourceException {
    MissingResourceException ex = null;
    ResourceBundle bundle = null;
    ClassLoader loader = Thread.currentThread().getContextClassLoader();
    while (bundle == null && loader != null) {
        try {/*from w  w w. j av  a  2s.c  o m*/
            bundle = ResourceBundle.getBundle(name, locale, loader);
        } catch (MissingResourceException e) {
            if (ex == null)
                ex = e;
        }
        loader = (bundle == null && checkParents) ? loader.getParent() : null;
    }

    loader = loadClass == null ? null : loadClass.getClassLoader();
    while (bundle == null && loader != null) {
        try {
            bundle = ResourceBundle.getBundle(name, locale, loader);
        } catch (MissingResourceException e) {
            if (ex == null)
                ex = e;
        }
        loader = (bundle == null && checkParents) ? loader.getParent() : null;
    }

    if (bundle == null) {
        try {
            bundle = ResourceBundle.getBundle(name, locale);
        } catch (MissingResourceException e) {
            if (ex == null)
                ex = e;
        }
    }

    if (bundle != null)
        return bundle;
    throw ex;
}

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From source file:gdt.data.grain.Support.java

/**
 * Get class resource as input stream. /*ww  w  .  j av a  2 s .c o m*/
 * @param handler the class
 * @param resource$ the resource name.
 * @return input stream.
 */
public static InputStream getClassResource(Class<?> handler, String resource$) {
    try {
        InputStream is = handler.getResourceAsStream(resource$);
        if (is != null) {
            //System.out.println("Support:getClassResource:resource stream="+is.toString());
            return is;
        } else {
            //   System.out.println("Support:getClassResource:cannot get embedded resource stream for handler="+handler.getName());                  
            ClassLoader classLoader = handler.getClassLoader();
            //if(classLoader!=null)
            //   System.out.println("Support:getClassResource:class loader="+classLoader.toString());
            is = classLoader.getResourceAsStream(resource$);
            //if(is!=null)
            //   System.out.println("Support:getClassResource:resourse stream="+is.toString());
            //else
            //   System.out.println("Support:getClassResource:cannot get resource stream");
            String handler$ = handler.getName();
            //System.out.println("Support:getClassResource:class="+handler$);
            String handlerName$ = handler.getSimpleName();
            //System.out.println("Support:getClassResource:class name="+handlerName$);
            String handlerPath$ = handler$.replace(".", "/");
            //System.out.println("Support:getClassResource:class path="+handlerPath$);
            String resourcePath$ = "src/" + handlerPath$.replace(handlerName$, resource$);
            //System.out.println("Support:getClassResource:resource path="+resourcePath$);
            ClassLoader classloader = Thread.currentThread().getContextClassLoader();
            URL resourceUrl = classloader.getResource(resourcePath$);
            if (resourceUrl != null) {
                //System.out.println("Support:getClassResource:resource URL="+resourceUrl.toString());
                return resourceUrl.openStream();
            } else {
                //System.out.println("Support:getClassResource:cannot get resource URL");               
            }
        }
    } catch (Exception e) {
        Logger.getLogger(gdt.data.grain.Support.class.getName()).severe(e.toString());
    }
    return null;
}

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From source file:org.ebayopensource.turmeric.plugins.maven.AbstractTurmericMojo.java

public static String getJarLocationOfClass(Class<?> clazz) {
    try {//from  w  ww .j a  v a  2 s .  co  m
        String classpath = clazz.getName().replace('.', '/') + ".class";
        URL resource = clazz.getClassLoader().getResource(classpath);
        if (resource != null) {
            String uri = resource.toExternalForm();
            int idx = uri.lastIndexOf("!");
            if (idx > 0) {
                uri = uri.substring(0, idx);
                return uri;
            } else if (uri.endsWith(classpath)) {
                return uri.substring(0, uri.length() - classpath.length());
            } else {
                return uri;
            }
        }
    } catch (Exception ignore) {
        /* ignore */
    }
    return "<unknown>";
}

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From source file:com.neuronrobotics.bowlerstudio.MainController.java

/**
 * Returns the location of the Jar archive or .class file the specified
 * class has been loaded from. <b>Note:</b> this only works if the class is
 * loaded from a jar archive or a .class file on the locale file system.
 *
 * @param cls//from  www.  jav a2s. c om
 *            class to locate
 * @return the location of the Jar archive the specified class comes from
 */
public static File getClassLocation(Class<?> cls) {

    // VParamUtil.throwIfNull(cls);
    String className = cls.getName();
    ClassLoader cl = cls.getClassLoader();
    URL url = cl.getResource(className.replace(".", "/") + ".class");

    String urlString = url.toString().replace("jar:", "");

    if (!urlString.startsWith("file:")) {
        throw new IllegalArgumentException("The specified class\"" + cls.getName()
                + "\" has not been loaded from a location" + "on the local filesystem.");
    }

    urlString = urlString.replace("file:", "");
    urlString = urlString.replace("%20", " ");

    int location = urlString.indexOf(".jar!");

    if (location > 0) {
        urlString = urlString.substring(0, location) + ".jar";
    } else {
        // System.err.println("No Jar File found: " + cls.getName());
    }

    return new File(urlString);
}

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From source file:lapin.load.Loader.java

static private Subr _toSubr(Symbol name, Class clazz, Env env) throws InstantiationException,
        NoSuchMethodException, IllegalAccessException, InvocationTargetException {
    if (Logger.debuglevelp(env)) {
        Logger.debug("[toSubr] name  : ~S", Lists.list(name), env);
        Logger.debug("[toSubr] class : ~S", Lists.list(clazz), env);
        Logger.debug("[toSubr] loader: ~S", Lists.list(clazz.getClassLoader()), env);
    }//from w w w  .j ava 2s. c o m
    Constructor c = clazz.getConstructor(CONSTRUCTOR_PARAM_TYPES);
    return Data.subr(c.newInstance(new Object[] { env }));
}

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