Java Method Call invokeAnnotatedDeclaredMethod(Object obj, Class annotationType)

Description

invoke Annotated Declared Method

License

CDDL license

Declaration

private static void invokeAnnotatedDeclaredMethod(Object obj, Class<? extends Annotation> annotationType)
        throws IllegalAccessException, IllegalArgumentException, InvocationTargetException 

Method Source Code

    //package com.java2s;
    /*//from w  ww.j  a va2s.c  o  m
     *         COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Notice
     *
     * The contents of this file are subject to the COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL)
     * Version 1.0 (the "License"); you may not use this file except in
     * compliance with the License. A copy of the License is available at
     * http://www.opensource.org/licenses/cddl1.txt
     *
     * The Original Code is Drombler.org. The Initial Developer of the
     * Original Code is Florian Brunner (GitHub user: puce77).
     * Copyright 2015 Drombler.org. All Rights Reserved.
     *
     * Contributor(s): .
     */

    import java.lang.annotation.Annotation;
    import java.lang.reflect.InvocationTargetException;
    import java.lang.reflect.Method;
    import java.util.Arrays;
    import java.util.Optional;

    public class Main {
        private static void invokeAnnotatedDeclaredMethod(Object obj, Class<? extends Annotation> annotationType)
        throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {

    Optional<Method> annotatedMethod = Arrays.stream(obj.getClass().getDeclaredMethods())
            .filter(method -> method.getParameterCount() == 0)
            .filter(method -> method.isAnnotationPresent(annotationType))
            .findFirst();

    if (annotatedMethod.isPresent()) {
        annotatedMethod.get().invoke(obj);
    }
}
    }

Related

1. invoke(String methodName, Object target, Class targetClass, Object[] args)
2. invoke(String name, Object object, Object... args)
3. invoke_ex(Object obj, String method, Class[] params, Object[] args)
4. invokeAccessableMethodWithArguments(Object instance, String method, Object... arguments)
5. invokeAndCastCollection(T returnType, Method m, Object obj, Object... args)
6. invokeAnUnwrapException(final Method method, final Object[] args, final Object target)
7. invokeCallback(String callbackName, String callbackParam)
8. invokeCmd(String className, String[] args)
9. invokeDeclared(Class c, Object obj, String method, Class[] paramClasses, Object[] params)