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 A Java virtual machine (JVM) is a virtual machine that enables a computer to run Java programs as well as programs written in other languages that are also compiled to Java bytecode. The JVM is detailed by a specification that formally describ ...

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

Java Development Kit The Java Development Kit (JDK) is a distribution of Java Technology by Oracle Corporation. It implements the Java Language Specification (JLS) and the Java Virtual Machine Specification (JVMS) and provides the Standard Edition (SE) of the Java ...

(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 is an integrated development environment (IDE) for Java. NetBeans allows applications to be developed from a set of modular software components called ''modules''. NetBeans runs on Windows, macOS, Linux and Solaris. In addition to Java ...

Platform; its architecture is modular and easy to extend with

plugins Plug-in, plug in or plugin may refer to: * Plug-in (computing) is a software component that adds a specific feature to an existing computer program. ** Audio plug-in, adds audio signal processing features ** Photoshop plugin, a piece of software t ...

. This tool was bundled directly with JDK 6 through JDK 8. VisualVM is actively developed.

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 Thread may refer to: Objects * Thread (yarn), a kind of thin yarn used for sewing ** Thread (unit of measurement), a cotton yarn measure * Screw thread, a helical ridge on a cylindrical fastener Arts and entertainment * ''Thread'' (film), 2016 ...

. *

Profile Profile or profiles may refer to: Art, entertainment and media Music * ''Profile'' (Jan Akkerman album), 1973 * ''Profile'' (Githead album), 2005 * ''Profile'' (Pat Donohue album), 2005 * ''Profile'' (Duke Pearson album), 1959 * '' ''Profi ...

application performance Business transaction management (BTM), also known as business transaction monitoring, application transaction profiling or user defined transaction profiling, is the practice of managing information technology (IT) from a business transaction per ...

or analyze

memory allocation Memory management is a form of resource management applied to computer memory. The essential requirement of memory management is to provide ways to dynamically allocate portions of memory to programs at their request, and free it for reuse when ...

. * Take and display thread dumps. * Take and browse heap dumps. * Analyze

core dump In computing, a core dump, memory dump, crash dump, storage dump, system dump, or ABEND dump consists of the recorded state of the working Computer storage, memory of a computer program at a specific time, generally when the program has crash (comp ...

s and applications offline. * Browse JFR recordings.

References

External links

VisualVM homepage
{{Oracle FOSS Oracle software Debuggers Profilers Free software programmed in Java (programming language)