Java Method Call invokeDeclaredMethod(Object object, String methodName, Object... parameters)

Description

invoke Declared Method

License

Open Source License

Declaration

public static Object invokeDeclaredMethod(Object object, String methodName, Object... parameters) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.lang.reflect.*;

public class Main {
    public static Object invokeDeclaredMethod(Object object, String methodName, Object... parameters) {
        try {/* w  ww .ja va  2  s  .co m*/
            Method method = object.getClass().getDeclaredMethod(methodName, convertToMethodParameters(parameters));
            method.setAccessible(true);
            return method.invoke(object, parameters);
        } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) {
            e.printStackTrace();
            return null;
        }
    }

    private static Class<?> getClass(String clazz) {
        try {
            return Class.forName(clazz);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
            return null;
        }
    }

    private static Class<?>[] convertToMethodParameters(Object... parameters) {
        Class<?>[] classes = new Class<?>[parameters.length];
        for (int i = 0; i < parameters.length; i++) {
            Class<?> clazz = parameters[i].getClass();
            if (clazz == Boolean.class) {
                clazz = boolean.class;
            } else if (clazz == Byte.class) {
                clazz = byte.class;
            } else if (clazz == Character.class) {
                clazz = char.class;
            } else if (clazz == Double.class) {
                clazz = double.class;
            } else if (clazz == Float.class) {
                clazz = float.class;
            } else if (clazz == Integer.class) {
                clazz = int.class;
            } else if (clazz == Long.class) {
                clazz = long.class;
            } else if (clazz == Short.class) {
                clazz = short.class;
            } else if (clazz == Void.class) {
                clazz = void.class;
            }
            classes[i] = clazz;
        }
        return classes;
    }
}

Related

1. invokeAnUnwrapException(final Method method, final Object[] args, final Object target)
2. invokeCallback(String callbackName, String callbackParam)
3. invokeCmd(String className, String[] args)
4. invokeDeclared(Class c, Object obj, String method, Class[] paramClasses, Object[] params)
5. invokeDeclared(Class c, Object obj, String method, Class[] paramClasses, Object[] params)
6. invokeDeclaredMethod(String methodName, Object target, Class[] parameterTypes, Object[] parameters)
7. invokeDeclaredMethodWithAnnotation(Class annotationClass, Object target)
8. invokeDefaultMethod(final Method method, final Object[] args, final Object proxy)
9. invokedMethod(java.lang.Object closure, java.lang.Class targetClass, java.lang.String targetMethod)