A Java Virtual Machine implementation may provide the programmer or the user control over the initial size of the method area, as well as, in the case of a varying-size method area, control over the maximum and minimum method area size. The following exceptional condition is associated with t...
Then, with a few code changes in easy-to-find places, you've got the job done. Reflection adds a new dimension to your programming skills. It will boost your effectiveness. Java Reflection in Action starts from the basics. It gradually builds a complete understanding, adding as it goes ...
doPrivileged( new ReflectionFactory.GetReflectionFactoryAction()); factory.setLangReflectAccess(new java.lang.reflect.ReflectAccess()); } /** * Return {@code true} if the integer argument includes the * {@code public} modifier, {@code false} otherwise. * * @param mod a set of modifiers *...
Java Reflection in Action.(Brief Article)(Book Review)Burroughs, John
Class<?>caller=Reflection.getCallerClass(); // 调用native方法进行获取class信息 returnforName0(className,true,ClassLoader.getClassLoader(caller),caller); } forName()反射获取类信息,并没有将实现留给了java,而是交给了jvm去加载! 主要是先获取 ClassLoader, 然后调用 native 方法,获取信息,加载类则是回调 jav...
Java Reflection in Action 作者:Ira R·Forman/Nate Forman 出版社:Manning Publications 出版年:2004-10 页数:300 定价:USD 44.95 装帧:Paperback ISBN:9781932394184 豆瓣评分 7.5 30人评价 5星 16.7% 4星 53.3% 3星 26.7% 2星 3.3% 1星 0.0% 评价:...
import java.lang.reflect.Method; public class ReflectionCacheExample { private static Method cachedMethod; static { try { cachedMethod = String.class.getMethod("length"); } catch (NoSuchMethodException e) { e.printStackTrace(); } } public static void main(String[] args) throws Exception { ...
run-time type identification,执行期类型识别。当你有一个指向基类的reference时,RTTI机制让你得以找出它所指向的对象以及类的相关信息。(JAVA提供的另一个方法就是reflection[反射/映射]机制) SERIALIZATION 序列化 是一切对象深度CLONE,对象的存储与恢复,对象的远程调用的基础,也就是说它是对象池化管理,分布式引用的...
getException() Returns the exception thrown by the privileged computation that resulted in this PrivilegedActionException. Methods in java.security that throw Exception Modifier and Type Method Description T PrivilegedExceptionAction.run() Performs the computation. Constructors in java.security with ...
通过Reflection 获取调用来源的 Class 实例 接着调用 Runtime 的 load0() 实现 load0() 首先获取系统的 SecurityManager。当 SecurityManager 存在的话检查目标 so 文件的访问权限,权限不足的话打印拒绝信息、抛出 SecurityException ,如果 name 参数为空,抛出 NullPoi...