java virtual machine launcher

1. Run-time data area 1.1 Program Counters The program counter is a thread-isolated area where each thread has a separate program counter. It is a small amount of memory space, the bytecode interpreter by changing the counter to select the next byte code instruction to execute, branch, loop, jump, exception handling, thread recovery and other basic functions need to rely on it to complete.1.2 Java Virtual

What is 1.JVM?　　Jvm:java virtual mechinal (Java vm). It is a fictional computer that is implemented by simulating various functions on a real computer. The main task of the JVM is to interpret its own set of instructions (bytecode, such as Java source code compiled into a class file to run on a virtual

1. Composition of the Java memory areaThe memory of the Java Virtual Runtime is mainly composed of five parts:(1) Method areaThe method area is used to store data such as class information, constants, static variables, and so on, that are loaded by the virtual machine. The s

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.0. PrefaceThe Java Virtual machine (Java Virtualmachine) implements the most important feature of the Java language: platform agnostic.Platform-agnostic principle: The

Download VISUALVM Latest version Download Historical version Download Two-Start VISUALVMThree VISUALVM User DirectoryFour VISUALVM window 1 Application windows 2 Details Window Five VISUALVM plug-inJava Virtual Machine Performance management artifact-VisualVM (2) Getting StartedFirst, downloadVisualVM1. Latest version DownloadVISUALVM downloa

exceptions to the Java Virtual machine are represented by an instance of Throwable or its subclasses, which is actually a real-time, non-local (nonlocal) conversion of the control of the program-from where the exception is thrown to where it handles the exception. The vast majority of exceptions are caused by an operation that is performed by the current thread,

Java memory Area run-time data regionProgram counter (Counter Register) A smaller memory space is an indicator of the line number of the bytecode that is being executed by the current thread. The bytecode interpreter obtains the next bytecode instruction by changing the value of the counter, branching, looping, jumping, exception handling, and thread recovery are done by it. Each thread has its own counter, and the counters between the th

"Survival or death" how to determine whether the object is alive? Two algorithms are given in this paper, namely, the reference counting algorithm and the accessibility analysis algorithm. Reference counting algorithm The idea of the algorithm is simple and easy to implement. We add a reference counter to the object, and when there is a place to reference it, the reference counter adds one, and when the reference fails, the counter is reduced by one, and when the counter is 0 o'cloc

Document directory Program counters Java Virtual Machine Stack Local method Stack Java heap Method Area Runtime constant pool Direct Memory This series provides Reading Notes for deep understanding of Java Virtual

The memory structure of the Java Virtual machine, as distinct from the Java memory model, which focuses on multithreading　　But before we do that, we should consider: Why is the memory structure of the JVM divided?I think the main is based on the different data update frequency, access speed requirements, garbage collec

The so-called virtual machine, is a virtual machine. Ta It is a software used to execute a series of virtual computer instructions, in general virtual machines can be divided into system virtu