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performance of BCI mode. TPTP: The currently used 4.6.2 version does not have a BCI mode. Codeproprofiler: When the program is relatively large, the use of BCI mode for profiling speed is relatively slow, in addition, in the acquisition of memory leak candidate, the speed is quite slow. (When the program code volume 5 Thousands of lines, Profiling needs 5 minutes with CodeProProfiler, when obtaining memor
thread profiling is mainly used to identify memory problems in multi-threaded applications. It generally includes three aspects:
Status changes of a thread
Deadlock
Distribution of the state of a thread during its life cycle
Profiling startup settings: similar to the run and debug startup settings in eclipse, you also need to perform startup sett
survivor area. Then tidy up the two districts of survivor.
Full GCOrganize the entire heap, including young, tenured and perm. The full GC is slower than the scavenge GC, so the full GC should be minimized as much as possible. The full GC may be caused by the following reasons:
Dynamic changes in the domain allocation policy of the heap after the last GC
System.GC () is displayed call
Perm field is full
Tenured was written full
-aaauzhlsza2c463.jpg "src=" http://s3.51cto.com/wyfs02/M00/6C/DD/ Wkiol1vuimhx3i-aaauzhlsza2c463.jpg "/>Click the memory button to perform a memory analysis view class650) this.width=650; "title=" capture. PNG "alt=" wkiol1vuimndkaqdaapq9qzatvg045.jpg "src=" http://s3.51cto.com/wyfs02/M01/6C/DD/ Wkiol1vuimndkaqdaapq9qzatvg045.jpg "/>4. Heap dump and thread dump operationsdump file is the memory image of the process, you can save the execution state of the program through the debugger to the dump
In the process of developing Java programs, it is unavoidable to encounter problems such as memory usage, performance bottleneck and so on. The Java Profiler Tool helps developers locate these issues quickly and efficiently, making it an important tool in the Java development process. At present, there are a variety of Java
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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
project will appear in your Package explorer and be able to expandThe JRE library represents the Java Development library.4. Creating Java ClassesRight-click on src and select class to:Explain:Source Folder--> represents the directoryPackage--> the package inside the corresponding Java programName--> represents the name of the class, usually capitalized, and nam
About EclipseEclipse is an integrated development tool developed by IBM with a $40 million investment. It is currently one of the most popular Java integration development tools, written in the Java language, and is an open source, extensible (Integrated Development environment,ide) development tool. In addition, IBM donated the
The latest version of Eclipse (Eclipse 3.2) comes with Callisto, a rich set of optional plug-ins for Eclipse 3.2. Callisto includes a powerful analysis tool called the Eclipse Test and performance tools platform, referred to as TPTP. TPTP provides a comprehensive set of open
common data structure, interface display elements, data collection and communication control mechanism in TPTP. It provides a range of extension points so that downstream projects can easily extend and reuse these features.
Testing tools
As a basic framework for building test tools, this subproject provides a common set of features for a test tool. Examples include reporting and analysis for implementati
.jhat: Analyze Jmap dump out of the heap to provide access in the form of Web pages. The Jhat function is basically weaker, is very memory-intensive, is largely unusable in the case of large heap files (for example, over 1G), and Eclipse Memory Anaylzer is an excellent alternative. Use the following format:jhat {DumpFile} requires additional startup parameters when the heap file is large, such as the following jhat–j-mx512m {dumpfile}Access http://loc
Eclipse is a popular integrated development environment (IDE) for Java programming. It can also be used as an environment for writing other languages, such as C + + and Ruby, incorporating frameworks for various kinds of tools, and creating a rich client platform for desktop or server applications. Today, the Eclipse o
Introduction to Java Basic-ECLIPSE development toolsYun ZhengjieCopyright Notice: Original works, declined reprint! Otherwise, the legal liability will be investigated.So-called 工欲善其事 its prerequisite, how can a Java Development engineer not have a working IDE? Today we will introduce a powerful IDE, eclipse. It is a
First, the JDK with the environment;1. JDK Mind Map2. Test code:Attention should be paid to the distinction between the case of the point class name, the symbol for the English input method,;.Class Hello{public static void Main (String [] args){System.out.println ("Java");System.out.println ("Hello World");System.out.println ("Hello World");System.out.println ("# # # # #");System.out.println ("# # #");System.out.println ("# #");System.out.println ("#"
The initial stage of Java learning, the use of TXT text writing program, for our beginners is very advantageous.
In this process, we will encounter a lot of mistakes, so that accumulated a lot of experience, such as spelling, letter case, format, and so on, there are better practice of our DOS use, in general, we do not have access to DOS.
After we have a certain basis of experience, we can stand on the shoulders of giants, with the help of other prog
and Fonts--Debug--Console font* C: Other documents* Window--Preferences--general--appearance--Colors and Fonts--Basic--Text Font* E: The form to mess up, how to do?* Window--Reset perspective* F: Console can not find, how to do?* Window--show View-console* G: Cancel hover hint* Window--Preferences--java--editor--hovers. On the right, remove the combined hover hook. * This will not automatically appear in the Code's hover box. If you want to see a hin
* a:alt+/plays the role of prompting* b:main+alt+/,syso+alt+/, give other hints* C: Supplemental OUTPUT statement, select the part that needs to be output, alt+/select the last item* C: Define your own ALT +/* Windows--perference-java-editor-templates--new* A: Create new CTRL + N (new)* B: Formatted CTRL+SHIFT+F (format)* C: Import Package Ctrl+shift+o* D: note ctrl+/,ctrl+shift+/,ctrl+shift+\* E: Move the code up or down the selected code ALT + up/do
Locate source files in many waysHttp://www.cnblogs.com/stevenlii/p/8513611.html1, in the Eclipse interface, Alt+enter, you can see the file directory, behind the Open Directory icon2. Right-click the file, show in-system explorer3, still using external tools + scripting WayThe Windows approach is as follows:That is location:${env_var:systemroot}\explorer.exeArgs:/Select, ${resource_loc}MacOS:Http://www.cnbl
[Eclipse for development tools] 7. eclipse code prompt, eclipse setting code prompt, and development tool eclipse
First open Eclipse development software, then click Window in the toolbar, find the Preferences option in the po
relationship between the various parts of the machine hardware requirements higher, compared to eat memory, at this time the running speed appears slow.
5, Oracle's JDeveloper
The oracle9i JDeveloper (version 9.0, up to 10g) provides a fully integrated development environment for building complex, multi-tier Java applications with the Java EE feature, XML, and Web services. It provides specia
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