Dec 16, 2014 · A monitor is an entity that possesses both a lock and a wait set. In Java, any Object can serve as a monitor. For a detailed explanation of how monitors work in Java, I recommend reading …

Mar 24, 2012 · When reading articles about Java threads, I often notice the expression: "current thread is the owner of this object's monitor". I get the meaning: the thread gets the right to operate on the …

Oct 1, 2019 · In the context of Java programming, the monitor is the intrinsic lock (where intrinsic means "built-in") on a Java object. For a thread to enter any synchronized instance method on an object it …

Apr 2, 2018 · Monitors Monitor is a synchronization construct that allows threads to have both mutual exclusion (using locks) and cooperation i.e. the ability to make threads wait for certain condition to be …

Aug 24, 2010 · The condition variable is shared state, so it needs to be locked to avoid race conditions between threads that want to wait and threads that want to notify. Instead of introducing yet another …

Feb 22, 2011 · The first Java releases where only provided of Threads. Since the Java Tiger (5.0), new classes have been introduced to handle concurrency. In particular, a complete package has been …

There are tools that let you monitor the VM's memory usage. The VM can expose memory statistics using JMX. You can also print GC statistics to see how the memory is performing over time. Invoking …

Jan 30, 2009 · 120 I've written a log file monitor before, and I found that the impact on system performance of polling the attributes of a single file, a few times a second, is actually very small. Java …

FileHandlerTest fileHandlerTest = new FileHandlerTest(); Create an instance of a FileWatcher by passing path, an instance of an Implemented FileHandler, and types of file events that you want to …

Can I check heap usage of a running JVM from the commandline, I mean the actual usage rather than the max amount allocated with Xmx. I need it to be commandline because I don't have access to a