摘要： Nested ClassesThe Java programming language allows you to define a class within another class. Such a class is called anested classand is illustrated ... 阅读全文

摘要： Static Inner Classes Consider the following Java code fragment: public class A { int y; public static class B { int x; void f () {} } } This fragment 阅读全文

摘要： Most people think that volatile variables are for concurrency. In some sense, this intuition is correct. However, the semantics of volatile variables ... 阅读全文

摘要： Thestd::tr1:shared_ptrclass template is the big and famous sibling of another class template calledstd::tr1::weak_ptr. In this part I introduceweak_pt... 阅读全文

摘要： For garbage collection (GC) to reclaim objects no longer in use by the program, thelogicallifetime of an object (the time that the application will us... 阅读全文

摘要： How many times have we created various object instances, and assign those to reference variables? We all know very well that Java has automatic garbag... 阅读全文

摘要： WeakHashMapis an implementation ofMapinterface where the memory of the value object can be reclaimed by Grabage Collector if the corresponding key is ... 阅读全文

摘要： Some time ago I was interviewing candidates for a Senior Java Engineer position. Among the many questions I asked was "What can you tell me about weak... 阅读全文

摘要： In myprevious postwe looked at different categories of ClassLoader leaks, and looked at a particular example of a reference from outside the web appli... 阅读全文

摘要： I’m planning a series of posts around classloader leaks, also known as PermGen memory leaks. You have probably arrived at this page because your Java ... 阅读全文