| /* |
| * 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. |
| */ |
| |
| package java.lang; |
| |
| import java.lang.reflect.Field; |
| |
| import javax.xml.bind.annotation.XmlTransient; |
| |
| |
| /** |
| * {@code Exception} is the superclass of all classes that represent recoverable |
| * exceptions. When exceptions are thrown, they may be caught by application |
| * code. |
| * |
| * @see Throwable |
| * @see Error |
| * @see RuntimeException |
| */ |
| public class Exception extends Throwable { |
| private static final long serialVersionUID = -3387516993124229948L; |
| |
| private transient Class[] classContext = SecurityManagerEx.getInstance().getThrowableContext(this); |
| |
| /** |
| * Constructs a new {@code Exception} that includes the current stack trace. |
| */ |
| public Exception() { |
| super(); |
| } |
| |
| /** |
| * Constructs a new {@code Exception} with the current stack trace and the |
| * specified detail message. |
| * |
| * @param detailMessage |
| * the detail message for this exception. |
| */ |
| public Exception(String detailMessage) { |
| super(detailMessage); |
| } |
| |
| /** |
| * Constructs a new {@code Exception} with the current stack trace, the |
| * specified detail message and the specified cause. |
| * |
| * @param detailMessage |
| * the detail message for this exception. |
| * @param throwable |
| * the cause of this exception. |
| */ |
| public Exception(String detailMessage, Throwable throwable) { |
| super(detailMessage, throwable); |
| } |
| |
| /** |
| * Constructs a new {@code Exception} with the current stack trace and the |
| * specified cause. |
| * |
| * @param throwable |
| * the cause of this exception. |
| */ |
| public Exception(Throwable throwable) { |
| super(throwable); |
| } |
| |
| /** |
| * Constructs a new exception with the specified detail message, |
| * cause, suppression enabled or disabled, and writable stack |
| * trace enabled or disabled. |
| * |
| * @param message the detail message. |
| * @param cause the cause. (A {@code null} value is permitted, |
| * and indicates that the cause is nonexistent or unknown.) |
| * @param enableSuppression whether or not suppression is enabled |
| * or disabled |
| * @param writableStackTrace whether or not the stack trace should |
| * be writable |
| */ |
| protected Exception(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) { |
| try { |
| Field field = null; |
| if (writableStackTrace) { |
| fillInStackTrace(); |
| } else { |
| field = Throwable.class.getDeclaredField("stackTrace"); |
| field.setAccessible(true); |
| field.set(this, null); |
| } |
| field = Throwable.class.getDeclaredField("detailMessage"); |
| field.setAccessible(true); |
| field.set(this, message); |
| field = Throwable.class.getDeclaredField("cause"); |
| field.setAccessible(true); |
| field.set(this, cause); |
| if (!enableSuppression) { |
| field = Throwable.class.getDeclaredField("suppressedExceptions"); |
| field.setAccessible(true); |
| field.set(this, null); |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| |
| } |
| |
| @XmlTransient |
| @Deprecated |
| public Class[] getClassContext() { |
| return classContext; |
| } |
| |
| protected Class[] classContext() { |
| return classContext; |
| } |
| |
| private static class SecurityManagerEx extends SecurityManager |
| { |
| |
| private static SecurityManagerEx sm; |
| |
| public static SecurityManagerEx getInstance() { |
| // No synchronized block because we don't really care |
| // if multiple instances are created at some point |
| if (sm == null) { |
| sm = new SecurityManagerEx(); |
| } |
| return sm; |
| } |
| |
| public Class[] getThrowableContext(Throwable t) { |
| try { |
| Class[] context = getClassContext(); |
| int nb = 0; |
| for (;;) { |
| if (context[context.length - 1 - nb] == t.getClass()) { |
| break; |
| } |
| nb++; |
| } |
| Class[] nc = new Class[nb]; |
| System.arraycopy(context, context.length - nb, nc, 0, nb); |
| return nc; |
| } catch (Exception e) { |
| return null; |
| } |
| } |
| } |
| |
| } |