java code profiling tools

https://laurent-leturgez.com/2017/12/22/profiling-java-application-with-systemtap/https://myaut.github.io/dtrace-stap-book/app/java.htmlI ' m not a JVM internals geek but I am sure there was a a-do the job without restarting the JVM, and I found some COO L Stuff with Systemtap.To does this, you has to install the packages on your Linux Distribution:systemtap and Systemtap-runtime-

Below is a list of some tools that can help you examine your Java source code for potential problems: 1. pMD from http://pmd.sourceforge.net/ License: PMD is licensed under a "BSD-style" License PMD scans Java source code and looks for potential problems like: * Poss

This article provides some tools to help you optimize the code and check potential problems in the source code. 1.PMDFrom http://pmd.sourceforge.net/ PMD can scan Java source code to find potential problems similar to the following: Possible bug -- a null value is returned

Java source code to C # five best toolsChszs, reprint need to indicate. Blog home:Http://blog.csdn.net/chszsFor some purposes, you may encounter the task of converting Java source code into C # source code. If you are understanding the source

(HASHCODE), GC generational age, lock status flag, thread-held lock, biased thread ID, biased timestamp, and so on.the second part, "Type pointer " : A pointer to the metadata of its class that the virtual machine uses to determine which class the object is an instance of. (Array, the object header must also have a piece of data to record the length of the array, because the virtual machine can determine the size of the Java object through the metada

Original postHttp://www.iteye.com/news/22285Original ENGLISHHttp://java.dzone.com/articles/java-tools-source-codeThis article provides some tools to help you optimize the code and check potential problems in the source code.1. pMD from http://pmd.sourceforge.net/PMD can scan

Python's function mechanism is a very important part, many times with Python script, that is, a few functions to solve the problem, do not need to like Java to get a class or something. This book address: Http://www.jianshu.com/p/d00108741a18 1 Function Object PyfunctionobjectThe Pyfunctionobject object is defined as follows:typedef struct{Pyobject_head Pyobject *func_code;/ * A Code Object * /Pyob

Original article: http://java.dzone.com/articles/java-tools-source-code 1.PMDFrom Http://pmd.sourceforge.net/ PMD can scan Java source code to find potential problems similar to the following: Potential bug -- a null value is returned in the try/catch/finally/switch state

Previous Reprinted Words Appfuse integrates many code quality control tools, all of which are integrated in Maven to facilitate automated detection. Today, I saw this article in the form of Eclipse plug-ins. problems can be found during the development period. Compared with the overall running of Maven, it is more convenient for every developer and has reference value. I will write a Maven article when I am

and tools (IO infrastructure, data structure, thread management, security, monitoring, etc.)– Dynamic memory allocation and management with garbage collection Your JVM can reside in a number of operating systems (Solaris, AIX, Windows, and so on.) And can be configured on your physical server, you can install 1 to more JVM processes on each physical/virtual server. Interaction between the JVM and the middleware The following diagram shows a high-l

Originally in the last company, a whole year to do tools, improve production, the project is particularly large, so the total savings for the old club of about 500K dollars.(in addition to praise, I personally do not have any benefits, the leaders are ladder, depressed)To the new company, it is also ready to develop some tools to improve production. Recently looking at net MVC and spring MVC data. So you wa

("Fromrealsubject");}}publicclass proxysubjectextendssubject{privaterealsubjectrealsubject; The //proxy role internally references the real role @Override public voidrequest () {prerequest (); // Actions that are attached before a real-world role Operation if (Null==realsubject) { realsubject=newrealsUbject ();} Realsubject.request (); //true character completion postrequest (); //actions attached after a real-world role Operation } privatevoidprerequest () {system.out.println (" Prerequest

Http://www.codeceo.com/article/5-java-csharp-convert-tools.htmlUndoubtedly, Java is one of the most popular and widely used programming languages, with more than 9 million of Java developers currently working on Web services, and Java is known for "writing once and can run anywhere", and this is the main reason for its

Original article: Http://www.infoq.com/cn/news/2011/08/jprofiler7 J-Technologies Co., Ltd. released jprofiler 7.0 some time ago. Jprofiler is a Java SE/EE profiling tool that features CPU analysis, memory analysis, thread analysis, and Vm telemetry. New Features of version 7.0 include: Analyze the built-in probes for JDBC, JMS, JNDI, Servlet, files, sockets, and processes. You can use the API to customi

play a ball? To this end, the use of some leisure time to write a common file upload and file download components, the implementation method is purely based on JSP, not too high technical difficulty, in short, young and old ^_^. Now the idea of design and the method of realization to everyone, hope to play a stimulating effect, inspire everyone's creative thinking. Resources:Https://github.com/ldcsaa/JessMA(as part of Jessma, code in Org.jessma.util.

The following is transferred from http://ifeve.com/anatomy-of-a-synchronizer/:Although many synchronizers (such as locks, semaphores, blocking queues, etc.) function differently, their internal design is very different. In other words, the underlying parts of their internals are identical (or similar). Understanding these basic components can help us greatly when designing Synchronizer. This is what this article is going to elaborate.Note: The content of this article is the Bjørn of the Universi

Continued "Non-professional code Nong Java Learning Note 5 Java Tools classes and Algorithms"V. String of stringsString and character differences: string double quotation marks "n", character enclosed in single quotation marks, denotes a symbol ' \ n 'The main methods and properties of 1.string Class

projects agreed by the company code. If improving code quality is the primary goal, then PMD is a good choice. But if you want more features and really use tools to modify the code, you should try jalopy. jalopy, Jalopy is an easy to configure source code format program th

division, so the picture will not be very good, these are not big problems, tune a tune can be. Brect.length this size is determined by the value of Qrcode.setqrcodeversion (3), which is not determined by the length of the string. And the following zxing can also generate such qrcode. 2. use barcode4j to generate barcodes and QR codes BARCODE4J website: http://sourceforge.net/projects/barcode4j/ BARCODE4J is a two-dimensional code generation algorith

the listThere are at least three ways to traverse after JDK1.5: ForEach, iterator, for loop.Package Bupt.xiaoye.charpter2.list;import Java.util.arraylist;import Java.util.iterator;import java.util.List; public class Testfor {public static void Testforeach (List list) {Object Temp;for (object t:list) temp = t;} public static void Testfor (List list) {Object temp;for (int i = 0; i The result of the operation is:As you can see, the direct for loop is the most efficient, followed by iterators and f