Java Reflection Method Static Invoke invokeStaticMethod(final Class cls, final String methodName)

Description

Invoke the named static method.

License

Open Source License

Declaration

public static Object invokeStaticMethod(final Class<?> cls, final String methodName)
        throws IllegalAccessException, IllegalArgumentException, InvocationTargetException 

Method Source Code

//package com.java2s;
/*//from  w w  w. j  a  va2 s.co  m
 * This file is part of FastClasspathScanner.
 * 
 * Author: Luke Hutchison
 * 
 * Hosted at: https://github.com/lukehutch/fast-classpath-scanner
 * 
 * --
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2016 Luke Hutchison
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without
 * limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so, subject to the following
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all copies or substantial
 * portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
 * EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
 * OR OTHER DEALINGS IN THE SOFTWARE.
 */

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class Main {
    /** Invoke the named static method. */
    public static Object invokeStaticMethod(final Class<?> cls, final String methodName)
            throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
        if (cls != null) {
            try {
                final Method method = cls.getDeclaredMethod(methodName);
                if (!method.isAccessible()) {
                    method.setAccessible(true);
                }
                return method.invoke(null);
            } catch (final NoSuchMethodException e) {
                // Try parent
            }
        }
        return null;
    }

    /** Invoke the named static method. */
    public static Object invokeStaticMethod(final Class<?> cls, final String methodName, final Class<?> argType,
            final Object arg) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
        if (cls != null) {
            try {
                final Method method = cls.getDeclaredMethod(methodName, argType);
                if (!method.isAccessible()) {
                    method.setAccessible(true);
                }
                return method.invoke(null, arg);
            } catch (final NoSuchMethodException e) {
                // Try parent
            }
        }
        return null;
    }
}

Related

1. invokeStaticMethod(Class cls, String methodName, Object... args)
2. invokeStaticMethod(Class cls, String name)
3. invokeStaticMethod(Class klass, String methodName)
4. invokeStaticMethod(Class objectType, String name, Class paramTypes[], Object args[])
5. invokeStaticMethod(Class pClass, String pMethod, Object pParam)
6. invokeStaticMethod(final Class cls, final String methodName, final boolean throwException)
7. invokeStaticMethod(final Class clazz, final String methodName, final Class[] parameterTypes, final Object[] arglist)
8. invokeStaticMethod(final Method method, final Object... args)
9. invokeStaticMethod(String className, String method, Class[] paramTypes, Object[] paramValues)