Example usage for java.lang Class getDeclaredConstructor

Introduction

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

Prototype

@CallerSensitive
public Constructor<T> getDeclaredConstructor(Class<?>... parameterTypes)
        throws NoSuchMethodException, SecurityException 

Source Link

Document

Returns a Constructor object that reflects the specified constructor of the class or interface represented by this Class object.

Usage

From source file:org.apache.tajo.storage.AbstractStorageManager.java

/**
 * create a scanner instance./*from  w  ww . j a v a 2  s .  c  om*/
 */
public static <T> T newScannerInstance(Class<T> theClass, Configuration conf, Schema schema, TableMeta meta,
        Fragment fragment) {
    T result;
    try {
        Constructor<T> meth = (Constructor<T>) CONSTRUCTOR_CACHE.get(theClass);
        if (meth == null) {
            meth = theClass.getDeclaredConstructor(DEFAULT_SCANNER_PARAMS);
            meth.setAccessible(true);
            CONSTRUCTOR_CACHE.put(theClass, meth);
        }
        result = meth.newInstance(new Object[] { conf, schema, meta, fragment });
    } catch (Exception e) {
        throw new RuntimeException(e);
    }

    return result;
}

---

From source file:org.hawk.service.api.utils.APIUtils.java

@SuppressWarnings({ "deprecation", "restriction" })
public static <T extends TServiceClient> T connectTo(Class<T> clazz, String url, ThriftProtocol thriftProtocol,
        final Credentials credentials) throws TTransportException, URISyntaxException {
    try {//from  www.j ava2  s.  co  m
        final URI parsed = new URI(url);

        TTransport transport;
        if (parsed.getScheme().startsWith("http")) {
            final DefaultHttpClient httpClient = APIUtils.createGZipAwareHttpClient();
            if (credentials != null) {
                httpClient.getCredentialsProvider().setCredentials(new AuthScope(null, -1), credentials);
            }
            transport = new THttpClient(url, httpClient);
        } else {
            transport = new TZlibTransport(new TSocket(parsed.getHost(), parsed.getPort()));
            transport.open();
        }
        Constructor<T> constructor = clazz.getDeclaredConstructor(org.apache.thrift.protocol.TProtocol.class);
        return constructor.newInstance(thriftProtocol.getProtocolFactory().getProtocol(transport));
    } catch (InstantiationException | IllegalAccessException | IllegalArgumentException
            | InvocationTargetException | NoSuchMethodException | SecurityException e) {
        throw new TTransportException(e);
    }
}

---

From source file:BrowserLauncher.java

/**
 * Called by a static initializer to load any classes, fields, and methods required at runtime
 * to locate the user's web browser./*from w  w w .  j  a  v a2  s  . c o m*/
 * @return <code>true</code> if all intialization succeeded
 *         <code>false</code> if any portion of the initialization failed
 */
private static boolean loadClasses() {
    switch (jvm) {
    case MRJ_2_0:
        try {
            Class aeTargetClass = Class.forName("com.apple.MacOS.AETarget");
            Class osUtilsClass = Class.forName("com.apple.MacOS.OSUtils");
            Class appleEventClass = Class.forName("com.apple.MacOS.AppleEvent");
            Class aeClass = Class.forName("com.apple.MacOS.ae");
            aeDescClass = Class.forName("com.apple.MacOS.AEDesc");

            aeTargetConstructor = aeTargetClass.getDeclaredConstructor(new Class[] { int.class });
            appleEventConstructor = appleEventClass.getDeclaredConstructor(
                    new Class[] { int.class, int.class, aeTargetClass, int.class, int.class });
            aeDescConstructor = aeDescClass.getDeclaredConstructor(new Class[] { String.class });

            makeOSType = osUtilsClass.getDeclaredMethod("makeOSType", new Class[] { String.class });
            putParameter = appleEventClass.getDeclaredMethod("putParameter",
                    new Class[] { int.class, aeDescClass });
            sendNoReply = appleEventClass.getDeclaredMethod("sendNoReply", new Class[] {});

            Field keyDirectObjectField = aeClass.getDeclaredField("keyDirectObject");
            keyDirectObject = (Integer) keyDirectObjectField.get(null);
            Field autoGenerateReturnIDField = appleEventClass.getDeclaredField("kAutoGenerateReturnID");
            kAutoGenerateReturnID = (Integer) autoGenerateReturnIDField.get(null);
            Field anyTransactionIDField = appleEventClass.getDeclaredField("kAnyTransactionID");
            kAnyTransactionID = (Integer) anyTransactionIDField.get(null);
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        } catch (NoSuchFieldException nsfe) {
            errorMessage = nsfe.getMessage();
            return false;
        } catch (IllegalAccessException iae) {
            errorMessage = iae.getMessage();
            return false;
        }
        break;
    case MRJ_2_1:
        try {
            mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");
            mrjOSTypeClass = Class.forName("com.apple.mrj.MRJOSType");
            Field systemFolderField = mrjFileUtilsClass.getDeclaredField("kSystemFolderType");
            kSystemFolderType = systemFolderField.get(null);
            findFolder = mrjFileUtilsClass.getDeclaredMethod("findFolder", new Class[] { mrjOSTypeClass });
            getFileCreator = mrjFileUtilsClass.getDeclaredMethod("getFileCreator", new Class[] { File.class });
            getFileType = mrjFileUtilsClass.getDeclaredMethod("getFileType", new Class[] { File.class });
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchFieldException nsfe) {
            errorMessage = nsfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        } catch (SecurityException se) {
            errorMessage = se.getMessage();
            return false;
        } catch (IllegalAccessException iae) {
            errorMessage = iae.getMessage();
            return false;
        }
        break;
    case MRJ_3_0:
        try {
            Class linker = Class.forName("com.apple.mrj.jdirect.Linker");
            Constructor constructor = linker.getConstructor(new Class[] { Class.class });
            linkage = constructor.newInstance(new Object[] { BrowserLauncher.class });
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        } catch (InvocationTargetException ite) {
            errorMessage = ite.getMessage();
            return false;
        } catch (InstantiationException ie) {
            errorMessage = ie.getMessage();
            return false;
        } catch (IllegalAccessException iae) {
            errorMessage = iae.getMessage();
            return false;
        }
        break;
    case MRJ_3_1:
        try {
            mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");
            openURL = mrjFileUtilsClass.getDeclaredMethod("openURL", new Class[] { String.class });
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        }
        break;
    default:
        break;
    }
    return true;
}

---

From source file:com.sequenceiq.ambari.shell.converter.AbstractConverter.java

@Override
public T convertFromText(String value, Class<?> clazz, String optionContext) {
    try {/* w  ww  . ja  va2s. co m*/
        Constructor<?> constructor = clazz.getDeclaredConstructor(String.class);
        return (T) constructor.newInstance(value);
    } catch (Exception e) {
        return null;
    }
}

---

From source file:org.jbpm.instantiation.ConstructorInstantiator.java

public Object instantiate(Class clazz, String configuration) {
    Object newInstance = null;//w  w w.  ja  va  2  s.  c  o  m
    try {
        Constructor constructor = clazz.getDeclaredConstructor(parameterTypes);
        constructor.setAccessible(true);
        newInstance = constructor.newInstance(new Object[] { configuration });
    } catch (Exception e) {
        log.error("couldn't instantiate '" + clazz.getName() + "'", e);
        throw new JbpmException(e);
    }
    return newInstance;
}

---

From source file:Browser.java

/**
 * Called by a static initializer to load any classes, fields, and methods 
 * required at runtime to locate the user's web browser.
 * @return <code>true</code> if all intialization succeeded
 *         <code>false</code> if any portion of the initialization failed
 *///from   www. j  a  v  a 2  s .c  o m
private static boolean loadClasses() {
    switch (jvm) {
    case MRJ_2_0:
        try {
            Class aeTargetClass = Class.forName("com.apple.MacOS.AETarget");
            Class osUtilsClass = Class.forName("com.apple.MacOS.OSUtils");
            Class appleEventClass = Class.forName("com.apple.MacOS.AppleEvent");
            Class aeClass = Class.forName("com.apple.MacOS.ae");
            aeDescClass = Class.forName("com.apple.MacOS.AEDesc");

            aeTargetConstructor = aeTargetClass.getDeclaredConstructor(new Class[] { int.class });
            appleEventConstructor = appleEventClass.getDeclaredConstructor(
                    new Class[] { int.class, int.class, aeTargetClass, int.class, int.class });
            aeDescConstructor = aeDescClass.getDeclaredConstructor(new Class[] { String.class });

            makeOSType = osUtilsClass.getDeclaredMethod("makeOSType", new Class[] { String.class });
            putParameter = appleEventClass.getDeclaredMethod("putParameter",
                    new Class[] { int.class, aeDescClass });
            sendNoReply = appleEventClass.getDeclaredMethod("sendNoReply", new Class[] {});

            Field keyDirectObjectField = aeClass.getDeclaredField("keyDirectObject");
            keyDirectObject = (Integer) keyDirectObjectField.get(null);
            Field autoGenerateReturnIDField = appleEventClass.getDeclaredField("kAutoGenerateReturnID");
            kAutoGenerateReturnID = (Integer) autoGenerateReturnIDField.get(null);
            Field anyTransactionIDField = appleEventClass.getDeclaredField("kAnyTransactionID");
            kAnyTransactionID = (Integer) anyTransactionIDField.get(null);
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        } catch (NoSuchFieldException nsfe) {
            errorMessage = nsfe.getMessage();
            return false;
        } catch (IllegalAccessException iae) {
            errorMessage = iae.getMessage();
            return false;
        }
        break;

    case MRJ_2_1:
        try {
            mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");
            mrjOSTypeClass = Class.forName("com.apple.mrj.MRJOSType");
            Field systemFolderField = mrjFileUtilsClass.getDeclaredField("kSystemFolderType");
            kSystemFolderType = systemFolderField.get(null);
            findFolder = mrjFileUtilsClass.getDeclaredMethod("findFolder", new Class[] { mrjOSTypeClass });
            getFileCreator = mrjFileUtilsClass.getDeclaredMethod("getFileCreator", new Class[] { File.class });
            getFileType = mrjFileUtilsClass.getDeclaredMethod("getFileType", new Class[] { File.class });
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchFieldException nsfe) {
            errorMessage = nsfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        } catch (SecurityException se) {
            errorMessage = se.getMessage();
            return false;
        } catch (IllegalAccessException iae) {
            errorMessage = iae.getMessage();
            return false;
        }
        break;

    case MRJ_3_0:
        try {
            Class linker = Class.forName("com.apple.mrj.jdirect.Linker");
            Constructor constructor = linker.getConstructor(new Class[] { Class.class });
            linkage = constructor.newInstance(new Object[] { Browser.class });
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        } catch (InvocationTargetException ite) {
            errorMessage = ite.getMessage();
            return false;
        } catch (InstantiationException ie) {
            errorMessage = ie.getMessage();
            return false;
        } catch (IllegalAccessException iae) {
            errorMessage = iae.getMessage();
            return false;
        }
        break;

    case MRJ_3_1:
        try {
            mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");
            openURL = mrjFileUtilsClass.getDeclaredMethod("openURL", new Class[] { String.class });
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        }
        break;

    default:
        break;
    }
    return true;
}

---

From source file:fxts.stations.util.BrowserLauncher.java

/**
 * Called by a static initializer to load any classes, fields, and methods required at runtime
 * to locate the user's web browser./*from   w w  w .j  a v  a2s. co  m*/
 *
 * @return <code>true</code> if all intialization succeeded
 *         <code>false</code> if any portion of the initialization failed
 */
private static boolean loadClasses() {
    switch (jvm) {
    case MRJ_2_0:
        try {
            Class aeTargetClass = Class.forName("com.apple.MacOS.AETarget");
            Class osUtilsClass = Class.forName("com.apple.MacOS.OSUtils");
            Class appleEventClass = Class.forName("com.apple.MacOS.AppleEvent");
            Class aeClass = Class.forName("com.apple.MacOS.ae");
            aeDescClass = Class.forName("com.apple.MacOS.AEDesc");
            aeTargetConstructor = aeTargetClass.getDeclaredConstructor(new Class[] { int.class });
            appleEventConstructor = appleEventClass.getDeclaredConstructor(
                    new Class[] { int.class, int.class, aeTargetClass, int.class, int.class });
            aeDescConstructor = aeDescClass.getDeclaredConstructor(new Class[] { String.class });
            makeOSType = osUtilsClass.getDeclaredMethod("makeOSType", new Class[] { String.class });
            putParameter = appleEventClass.getDeclaredMethod("putParameter",
                    new Class[] { int.class, aeDescClass });
            sendNoReply = appleEventClass.getDeclaredMethod("sendNoReply", new Class[] {});
            Field keyDirectObjectField = aeClass.getDeclaredField("keyDirectObject");
            keyDirectObject = (Integer) keyDirectObjectField.get(null);
            Field autoGenerateReturnIDField = appleEventClass.getDeclaredField("kAutoGenerateReturnID");
            kAutoGenerateReturnID = (Integer) autoGenerateReturnIDField.get(null);
            Field anyTransactionIDField = appleEventClass.getDeclaredField("kAnyTransactionID");
            kAnyTransactionID = (Integer) anyTransactionIDField.get(null);
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        } catch (NoSuchFieldException nsfe) {
            errorMessage = nsfe.getMessage();
            return false;
        } catch (IllegalAccessException iae) {
            errorMessage = iae.getMessage();
            return false;
        }
        break;
    case MRJ_2_1:
        try {
            mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");
            mrjOSTypeClass = Class.forName("com.apple.mrj.MRJOSType");
            Field systemFolderField = mrjFileUtilsClass.getDeclaredField("kSystemFolderType");
            kSystemFolderType = systemFolderField.get(null);
            findFolder = mrjFileUtilsClass.getDeclaredMethod("findFolder", new Class[] { mrjOSTypeClass });
            getFileCreator = mrjFileUtilsClass.getDeclaredMethod("getFileCreator", new Class[] { File.class });
            getFileType = mrjFileUtilsClass.getDeclaredMethod("getFileType", new Class[] { File.class });
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchFieldException nsfe) {
            errorMessage = nsfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        } catch (SecurityException se) {
            errorMessage = se.getMessage();
            return false;
        } catch (IllegalAccessException iae) {
            errorMessage = iae.getMessage();
            return false;
        }
        break;
    case MRJ_3_0:
        try {
            Class linker = Class.forName("com.apple.mrj.jdirect.Linker");
            Constructor constructor = linker.getConstructor(new Class[] { Class.class });
            linkage = constructor.newInstance(new Object[] { BrowserLauncher.class });
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        } catch (InvocationTargetException ite) {
            errorMessage = ite.getMessage();
            return false;
        } catch (InstantiationException ie) {
            errorMessage = ie.getMessage();
            return false;
        } catch (IllegalAccessException iae) {
            errorMessage = iae.getMessage();
            return false;
        }
        break;
    case MRJ_3_1:
        try {
            mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils");
            openURL = mrjFileUtilsClass.getDeclaredMethod("openURL", new Class[] { String.class });
        } catch (ClassNotFoundException cnfe) {
            errorMessage = cnfe.getMessage();
            return false;
        } catch (NoSuchMethodException nsme) {
            errorMessage = nsme.getMessage();
            return false;
        }
        break;
    default:
        break;
    }
    return true;
}

---

From source file:marshalsec.gadgets.CommonsConfiguration.java

@Args(minArgs = 2, args = { "codebase", "class" }, defaultArgs = { MarshallerBase.defaultCodebase,
        MarshallerBase.defaultCodebaseClass })
@Primary//from ww  w .  j a  v  a 2 s  .com
default Object makeConfigurationMap(UtilFactory uf, String[] args) throws Exception {
    Object jc = makeConfiguration(uf, args);
    Class<?> cl = Class.forName("org.apache.commons.configuration.ConfigurationMap");
    Constructor<?> cons = cl.getDeclaredConstructor(Configuration.class);
    cons.setAccessible(true);
    return uf.makeHashCodeTrigger(cons.newInstance(jc));
}

---

From source file:com.justwayward.reader.base.BaseRVActivity.java

public Object createInstance(Class<?> cls) {
    Object obj;//from  w w w  . j a  v  a 2s  . co m
    try {
        Constructor c1 = cls.getDeclaredConstructor(Context.class);
        c1.setAccessible(true);
        obj = c1.newInstance(mContext);
    } catch (Exception e) {
        obj = null;
    }
    return obj;
}

---

From source file:com.adaptris.core.management.config.ConfigManagerImpl.java

private AdapterRegistryMBean createCustomRegistry() throws CoreException {
    AdapterRegistryMBean result = null;/*www .java  2s . co m*/
    String classname = System.getProperty(ADAPTER_REGISTRY_IMPL);
    Class[] paramTypes = { BootstrapProperties.class };
    Object[] args = { bootstrapProperties };

    Class clazz;
    try {
        clazz = Class.forName(classname);
        Constructor cnst = clazz.getDeclaredConstructor(paramTypes);
        result = (AdapterRegistryMBean) cnst.newInstance(args);
    } catch (Exception e) {
        ExceptionHelper.rethrowCoreException(e);
    }
    return result;
}

---

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