1/** 2 * Copyright 2006-2013 the original author or authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16package org.objenesis.instantiator.basic; 17 18import java.lang.reflect.Constructor; 19 20import org.objenesis.ObjenesisException; 21import org.objenesis.instantiator.ObjectInstantiator; 22 23/** 24 * Instantiates a class by grabbing the no args constructor and calling Constructor.newInstance(). 25 * This can deal with default public constructors, but that's about it. 26 * 27 * @author Joe Walnes 28 * @see ObjectInstantiator 29 */ 30public class ConstructorInstantiator implements ObjectInstantiator { 31 32 protected Constructor constructor; 33 34 public ConstructorInstantiator(Class type) { 35 try { 36 constructor = type.getDeclaredConstructor((Class[]) null); 37 } 38 catch(Exception e) { 39 throw new ObjenesisException(e); 40 } 41 } 42 43 public Object newInstance() { 44 try { 45 return constructor.newInstance((Object[]) null); 46 } 47 catch(Exception e) { 48 throw new ObjenesisException(e); 49 } 50 } 51 52} 53