/lib/src/org/apache/http/client/utils/CloneUtils.java
http://github.com/onedanshow/Screen-Courter · Java · 80 lines · 37 code · 6 blank · 37 comment · 6 complexity · aa4c2b13ef01677132d46ff84de989df MD5 · raw file
- /*
- * $HeadURL$
- * $Revision$
- * $Date$
- *
- * ====================================================================
- *
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- *
- */
- package org.apache.http.client.utils;
-
- import java.lang.reflect.InvocationTargetException;
- import java.lang.reflect.Method;
-
- import org.apache.http.annotation.Immutable;
-
- /**
- * A collection of utilities to workaround limitations of Java clone framework.
- *
- * @since 4.0
- */
- @Immutable
- public class CloneUtils {
-
- public static Object clone(final Object obj) throws CloneNotSupportedException {
- if (obj == null) {
- return null;
- }
- if (obj instanceof Cloneable) {
- Class<?> clazz = obj.getClass ();
- Method m;
- try {
- m = clazz.getMethod("clone", (Class[]) null);
- } catch (NoSuchMethodException ex) {
- throw new NoSuchMethodError(ex.getMessage());
- }
- try {
- return m.invoke(obj, (Object []) null);
- } catch (InvocationTargetException ex) {
- Throwable cause = ex.getCause();
- if (cause instanceof CloneNotSupportedException) {
- throw ((CloneNotSupportedException) cause);
- } else {
- throw new Error("Unexpected exception", cause);
- }
- } catch (IllegalAccessException ex) {
- throw new IllegalAccessError(ex.getMessage());
- }
- } else {
- throw new CloneNotSupportedException();
- }
- }
-
- /**
- * This class should not be instantiated.
- */
- private CloneUtils() {
- }
-
- }