VisualVM is a tool that provides a visual interface for viewing detailed information about Java applications while they are running on a Java Virtual Machine

Java Virtual Machine

A Java virtual machine is a virtual machine capable of executing Java bytecode. It is the code execution component of the Java software platform. Sun Microsystems stated that there are over 4.5 billion JVM-enabled devices.-Overview:...

 (JVM). VisualVM organizes JVM data that is retrieved by the Java Development Kit

Java Development Kit

The Java Development Kit is an Oracle Corporation product aimed at Java developers. Since the introduction of Java, it has been by far the most widely used Java SDK. On 17 November 2006, Sun announced that it would be released under the GNU General Public License , thus making it free software...

 (JDK) tools and presents the information in a way that allows data on multiple Java applications to be quickly viewed—both local applications and applications that are running on remote hosts. Programmers can also capture data about the JVM software and save the data to the local system, and then view the data later or share it with others. VisualVM is built on the NetBeans

NetBeans

NetBeans refers to both a platform framework for Java desktop applications, and an integrated development environment for developing with Java, JavaScript, PHP, Python, Groovy, C, C++, Scala, Clojure, and others...

 Platform, its architecture is modular and easy to extend with plugins.

Features

VisualVM has features of use to application developers, system administrators, quality engineers and application users submitting bug reports.

• Display local and remote Java applications.
• Display application configuration and runtime environment.
• Monitor application memory consumption and runtime behavior.
• Monitor application threads.
• Profile application performance or analyze memory allocation.
• Take and display thread dumps.
• Take and browse heap dumps.
• Analyze core dumps and applications offline.

External links

• VisualVM homepage
• Build support for VisualVM by project IcedTea
  IcedTea
  IcedTea is a build and integration project for OpenJDK launched by Red Hat in June 2007. The initial goal was to make the Java OpenJDK software which Sun Microsystems released as free software in 2007 usable without requiring any other software that is not free software and hence make it possible...