Java Class New Instance newInstance(Class targetClass)

Description

new Instance

License

Open Source License

Declaration

public static Object newInstance(Class targetClass)
            throws NoSuchMethodException, InvocationTargetException,
            IllegalAccessException, InstantiationException 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2001, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * /*from  w  ww.ja v  a 2 s .  c  o  m*/
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;

public class Main {
    private static final Class[] EMPTY_CLASS_ARRAY = new Class[0];
    private static final Object[] EMPTY_OBJECT_ARRAY = new Object[0];

    public static Object newInstance(Class targetClass)
            throws NoSuchMethodException, InvocationTargetException,
            IllegalAccessException, InstantiationException {
        // We want to get the default ctor, which is in the declared list. No need
        // to worry about inheritance because ctors are never virtual.
        Constructor ctor = targetClass
                .getDeclaredConstructor(EMPTY_CLASS_ARRAY);
        ctor.setAccessible(true);
        return ctor.newInstance(EMPTY_OBJECT_ARRAY);
    }
}

Related

1. newInstance(Class cls)
2. newInstance(Class cls)
3. newInstance(Class cmdClass)
4. newInstance(Class constructorClass, Object[] parameters)
5. newInstance(Class klass)
6. newInstance(Class cl, Object[] args)
7. newInstance(Class clazz)
8. newInstance(Class componentType, int length)
9. newInstance(Class classZ)