Example usage for java.lang Class getDeclaredMethod

Introduction

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

Prototype

@CallerSensitive
public Method getDeclaredMethod(String name, Class<?>... parameterTypes)
        throws NoSuchMethodException, SecurityException

Source Link

Document

Returns a Method object that reflects the specified declared method of the class or interface represented by this Class object.

Usage

From source file:org.apache.bval.util.reflection.Reflection.java

/**
 * Get the declared method from {@code clazz}.
 * @param clazz/*from  w w w.j  a va 2 s  .  c om*/
 * @param name
 * @param parameters
 * @return {@link Method} or {@code null}
 */
public static Method getDeclaredMethod(final Class<?> clazz, final String name, final Class<?>... parameters) {
    try {
        return clazz.getDeclaredMethod(name, parameters);
    } catch (final NoSuchMethodException e) {
        return null;
    }
}

From source file:org.apache.kylin.monitor.ConfigUtils.java

public static void addClasspath(String path) throws Exception {
    File file = new File(path);

    if (file.exists()) {
        URLClassLoader urlClassLoader = (URLClassLoader) ClassLoader.getSystemClassLoader();
        Class<URLClassLoader> urlClass = URLClassLoader.class;
        Method method = urlClass.getDeclaredMethod("addURL", new Class[] { URL.class });
        method.setAccessible(true);/*w  w  w  .jav a2  s  . com*/
        method.invoke(urlClassLoader, new Object[] { file.toURI().toURL() });
    }
}

From source file:com.googlecode.struts2gwtplugin.interceptor.GWTServlet.java

/**
 * Find the invoked method on either the specified interface or any super.
 *//*w w w. j  a  v  a 2  s  .  c  o m*/
private static Method findInterfaceMethod(Class<?> intf, String methodName, Class<?>[] paramTypes,
        boolean includeInherited) {
    try {
        return intf.getDeclaredMethod(methodName, paramTypes);
    } catch (NoSuchMethodException e) {
        if (includeInherited) {
            Class<?>[] superintfs = intf.getInterfaces();
            for (int i = 0; i < superintfs.length; i++) {
                Method method = findInterfaceMethod(superintfs[i], methodName, paramTypes, true);
                if (method != null) {
                    return method;
                }
            }
        }

        return null;
    }
}

From source file:Main.java

static void initReflection() {
    try {//from w ww  .j a va2 s.  c o m

        // lightweight dispatcher
        dispatcherField = Container.class.getDeclaredField("dispatcher");
        dispatcherField.setAccessible(true);

        Class<?> dispatcherCls = Class.forName("java.awt.LightweightDispatcher");
        newLightweightDispatcher = dispatcherCls.getDeclaredConstructor(new Class[] { Container.class });
        newLightweightDispatcher.setAccessible(true);

        dispatchMethod = dispatcherCls.getDeclaredMethod("dispatchEvent", AWTEvent.class);
        dispatchMethod.setAccessible(true);

        enableEvents = dispatcherCls.getDeclaredMethod("enableEvents", new Class[] { long.class });
        enableEvents.setAccessible(true);

    } catch (Exception ex) {

        System.err.println(ex);

        InternalError err = new InternalError();
        err.initCause(ex);
        throw err;
    }
}

From source file:com.haulmont.bali.util.ReflectionHelper.java

/**
 * Searches for a method by its name and arguments.
 * @param c         class/*from   w w w .  j a  v a 2  s .com*/
 * @param name      method name
 * @param params    method arguments
 * @return          method reference or null if a suitable method not found
 */
@Nullable
public static Method findMethod(Class c, String name, Object... params) {
    Class[] paramTypes = getParamTypes(params);

    Method method = null;
    try {
        method = c.getDeclaredMethod(name, paramTypes);
    } catch (NoSuchMethodException e) {
        try {
            method = c.getMethod(name, paramTypes);
        } catch (NoSuchMethodException e1) {
            //
        }
    }
    if (method != null)
        method.setAccessible(true);

    return method;
}

From source file:com.xlson.standalonewar.Starter.java

/**
 * Add url to the system class loader./*  w w  w.j  a va2  s .  c o  m*/
 */
public static void appendClasspath(URL url) throws IOException {

    URLClassLoader sysloader = (URLClassLoader) ClassLoader.getSystemClassLoader();
    Class sysclass = URLClassLoader.class;

    try {
        Method method = sysclass.getDeclaredMethod("addURL", parameters);
        method.setAccessible(true);
        method.invoke(sysloader, new Object[] { url });
    } catch (Throwable t) {
        t.printStackTrace();
        throw new IOException("Error, could not add URL to system classloader");
    }

}

From source file:app.commons.ReflectionUtils.java

/**
 * We cannot use <code>clazz.getMethod(String name, Class<?>... parameterTypes)</code> because it only returns public methods.
 *///from ww  w  .j  a v  a 2 s  . c  om
private static Method getMethod(Class clazz, String methodName, Class<?>... parameterTypes) {
    Class currentClass = clazz;
    while (currentClass != null) {
        try {
            Method method = currentClass.getDeclaredMethod(methodName, parameterTypes);
            method.setAccessible(true);
            return method;
        } catch (NoSuchMethodException e) {
            currentClass = currentClass.getSuperclass();
        }
    }
    throw new RuntimeException(new NoSuchMethodException(methodName));
}

From source file:Main.java

public static <T> T getPrivateMethod(Class<?> outerClass, String innerClassName, Object obj, String methodName,
        Class<?> parameterTypes[], Object parameters[], Class<T> returnType) throws Exception {
    // Get all inner classes
    Class<?> innerClasses[] = outerClass.getDeclaredClasses();
    // find the inner class that matches the order
    Class<?> innerClass = null;

    for (int index = 0; index < innerClasses.length; index++) {
        if (innerClassName.equals(innerClasses[index].getSimpleName())) {
            innerClass = innerClasses[index];
        }/*from   w  w w .  jav  a  2  s. com*/
    }
    T returnValue = null;
    if (innerClass != null) {
        Method method = innerClass.getDeclaredMethod(methodName, parameterTypes);
        method.setAccessible(true);
        returnValue = (T) method.invoke(obj, parameters);
    }
    return returnValue;
}

From source file:it.geosolutions.geobatch.action.scripting.ScriptingAction.java

/**
 * /*from   ww  w  .  ja  v a2  s.  c  o  m*/
 * @param moduleFile
 * @throws IOException
 */
private static void addFile(File moduleFile) throws IOException {
    URL moduleURL = moduleFile.toURI().toURL();
    final Class[] parameters = new Class[] { URL.class };

    URLClassLoader sysloader = (URLClassLoader) ClassLoader.getSystemClassLoader();
    Class sysclass = URLClassLoader.class;

    try {
        Method method = sysclass.getDeclaredMethod("addURL", parameters);
        method.setAccessible(true);
        method.invoke(sysloader, new Object[] { moduleURL });
    } catch (Throwable t) {
        LOGGER.error("Error, could not add URL to system classloader", t);
        throw new IOException("Error, could not add URL to system classloader");
    }
}

From source file:Main.java

public static Object setObjectFileValue(Object obj, Map<String, String> data) throws Exception {
    Class<?> cls = obj.getClass();
    Field[] fields = cls.getDeclaredFields();
    for (Field field : fields) {
        Class<?> clsType = field.getType();
        String name = field.getName();
        String strSet = "set" + name.substring(0, 1).toUpperCase() + name.substring(1, name.length());
        Method methodSet = cls.getDeclaredMethod(strSet, clsType);
        if (data.containsKey(name)) {
            Object objValue = typeConversion(clsType, data.get(name));
            methodSet.invoke(obj, objValue);
        }/*w w  w  . j a v  a 2 s .co m*/
    }
    return obj;
}