Example usage for java.lang.reflect Constructor setAccessible

Introduction

In this page you can find the example usage for java.lang.reflect Constructor setAccessible.

Prototype

@Override
@CallerSensitive
public void setAccessible(boolean flag)

Source Link

Document

A SecurityException is also thrown if this object is a Constructor object for the class Class and flag is true.

Usage

From source file:com.sparkplatform.api.core.PropertyAsserter.java

@SuppressWarnings("unchecked")
private static Object invokeDefaultConstructorEvenIfPrivate(Class type) {
    try {/*from w ww  . j a  v  a  2 s  . c  o m*/
        Constructor ctor = type.getDeclaredConstructor();
        ctor.setAccessible(true);
        return ctor.newInstance();
    } catch (Exception ex) {
        throw new RuntimeException("Could not invoke default constructor on type " + type, ex);
    }
}

From source file:org.cloudata.core.common.util.ReflectionUtils.java

/** Create an object for the given class and initialize it from conf
 * /* w  w w.  ja v  a  2s. com*/
 * @param theClass class of which an object is created
 * @param conf Configuration
 * @return a new object
 */
public static Object newInstance(Class<?> theClass, CloudataConf conf) {
    Object result;
    try {
        Constructor meth = CONSTRUCTOR_CACHE.get(theClass);
        if (meth == null) {
            meth = theClass.getDeclaredConstructor(emptyArray);
            meth.setAccessible(true);
            CONSTRUCTOR_CACHE.put(theClass, meth);
        }
        result = meth.newInstance();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    setConf(result, conf);
    return result;
}

From source file:org.apache.tez.engine.runtime.RuntimeUtils.java

@SuppressWarnings("unchecked")
public static <T> T getNewInstance(Class<T> theClass, TezEngineTaskContext context) {
    T result;//from   w w  w .  j  av a  2s  . co m
    try {
        Constructor<T> meth = (Constructor<T>) CONSTRUCTOR_CACHE.get(theClass);
        if (meth == null) {
            meth = theClass.getDeclaredConstructor(CONTEXT_ARRAY);
            meth.setAccessible(true);
            CONSTRUCTOR_CACHE.put(theClass, meth);
        }
        result = meth.newInstance(context);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    return result;
}

From source file:com.sixt.service.framework.protobuf.ProtobufUtil.java

private static <TYPE extends Message> TYPE.Builder getBuilder(Class<TYPE> messageClass)
        throws NoSuchMethodException, InstantiationException, IllegalAccessException,
        java.lang.reflect.InvocationTargetException {

    Constructor<TYPE> constructor = messageClass.getDeclaredConstructor();
    constructor.setAccessible(true);
    TYPE instance = constructor.newInstance();

    return instance.newBuilderForType();
}

From source file:org.apache.bookkeeper.common.util.ReflectionUtils.java

/**
 * Create an object for the given class.
 *
 * @param theCls//from  www.  jav  a  2  s  . co m
 *          class of which an object is created.
 * @return a new object
 */
@SuppressWarnings("unchecked")
public static <T> T newInstance(Class<T> theCls) {
    T result;
    try {
        Constructor<T> meth = (Constructor<T>) constructorCache.get(theCls);
        if (null == meth) {
            meth = theCls.getDeclaredConstructor();
            meth.setAccessible(true);
            constructorCache.put(theCls, meth);
        }
        result = meth.newInstance();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    return result;
}

From source file:org.apache.tez.engine.runtime.RuntimeUtils.java

@SuppressWarnings("unchecked")
public static <T> T getNewInputInstance(Class<T> theClass, TezEngineTaskContext context, int index) {
    T result;/*  ww  w .j a v  a 2  s.c om*/
    try {
        Constructor<T> meth = (Constructor<T>) CONSTRUCTOR_CACHE.get(theClass);
        if (meth == null) {
            meth = theClass.getDeclaredConstructor(CONTEXT_INT_ARRAY);
            meth.setAccessible(true);
            CONSTRUCTOR_CACHE.put(theClass, meth);
        }
        result = meth.newInstance(context, index);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    return result;
}

From source file:Main.java

private static Constructor<?> getDefaultConstructor(@NonNull Class<?> cls) {
    final Constructor[] ctors = cls.getDeclaredConstructors();
    Constructor ctor = null;
    for (Constructor ct : ctors) {
        ctor = ct;//from  w  w w.  j av  a  2s  .c  om
        if (ctor.getGenericParameterTypes().length == 0)
            break;
    }
    if (ctor == null)
        throw new IllegalStateException("No default constructor found for " + cls.getName());
    ctor.setAccessible(true);
    return ctor;
}

From source file:org.solovyev.android.games.game2048.PreferenceManagerCompat.java

/**
 * Creates the {@link android.preference.PreferenceManager}.
 *
 * @param activity activity//from   w  w  w. j av  a 2 s . com
 * @return The {@link android.preference.PreferenceManager} used by this activity.
 */
@Nonnull
private static PreferenceManager newPreferenceManager(@Nonnull Activity activity) {
    try {
        Constructor<PreferenceManager> c = PreferenceManager.class.getDeclaredConstructor(Activity.class,
                int.class);
        c.setAccessible(true);
        return c.newInstance(activity, FIRST_REQUEST_CODE);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

From source file:com.alibaba.wasp.client.ServerCallable.java

private static RuntimeException unwrapRuntimeException(Throwable t) {
    if (StringUtils.isNotEmpty(t.getMessage())) {
        try {// w w  w  . j  av  a 2 s. c  o m
            Class exceptionClass = Class.forName(t.getMessage());
            Constructor cn = exceptionClass.getConstructor(String.class);
            cn.setAccessible(true);
            String firstLine = t.getMessage();

            Object ex = cn.newInstance(firstLine);
            if (ex instanceof RuntimeException) {
                return (RuntimeException) ex;
            }
        } catch (ClassNotFoundException e) {
            //ignore
        } catch (NoSuchMethodException e) {
            //ignore
        } catch (InvocationTargetException e) {
            //ignore
        } catch (InstantiationException e) {
            //ignore
        } catch (IllegalAccessException e) {
            //ignore
        }
    }
    return null;
}

From source file:com.alibaba.wasp.util.JVMClusterUtil.java

/**
 * Creates a {@link FServerThread}.//from   ww  w .  ja  v  a2  s.com
 * Call 'start' on the returned thread to make it run.
 * @param c Configuration to use.
 * @param hrsc Class to create.
 * @param index Used distinguishing the object returned.
 * @throws java.io.IOException
 * @return FServer added.
 */
public static JVMClusterUtil.FServerThread createFServerThread(final Configuration c,
        final Class<? extends FServer> hrsc, final int index) throws IOException {
    FServer server;
    try {
        Constructor<? extends FServer> ctor = hrsc.getConstructor(Configuration.class);
        ctor.setAccessible(true);
        server = ctor.newInstance(c);
    } catch (InvocationTargetException ite) {
        Throwable target = ite.getTargetException();
        throw new RuntimeException("Failed construction of FServer: " + hrsc.toString()
                + ((target.getCause() != null) ? target.getCause().getMessage() : ""), target);
    } catch (Exception e) {
        IOException ioe = new IOException();
        ioe.initCause(e);
        throw ioe;
    }
    return new JVMClusterUtil.FServerThread(server, index);
}