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There are a lot of plug-ins in the eclipse environment that can help us with the static analysis of the code, which can help us find bugs in the code as early as possible. Here are a few common plug-ins:
1. PMD
We can install the PMD plug-in for
on the data type.
Data flow Analysis: Data flow analysis is also a software verification technology, which collects variable information referenced in the code to analyze the assignment, reference, and delivery of variables in the program. Analysis of a data stream determines the definition of a variable and the c
analysis is also a software verification technology, which collects information about variables referenced in the code to analyze the assignment, reference, and transmission of variables in the program. The analysis of data streams can determine the definition of variables and the situations where the variables are referenced in the
The Sourceinsight-scan is an integrated, C + + code static analysis plug-in in Sourceinsight that integrates the advantages of the industry's best static analysis tools such as Cppcheck,coverity,pclint.Designed to help developers quickly discover non-grammatical errors that
Java Anti-compilation plugin under Eclipse: Eclipse Class Decompiler, which integrates the best 2 Java decompile tools, Jad and Jd-core, and integrates seamlessly with the Eclipse class viewer It is convenient to use this
PMD is a source code parser. It finds common programming flaws, such as unused variables, empty catch blocks, unnecessary object creation, and so on. It supports Java, JavaScript, Salesforce.com Apex, Plsql, Apache Velocity, XML, XSL, and more.In addition, it includes CPD (copy-paste-detector, copy-paste detector). CPD in Java, C, C + +, C #, Groovy, PHP, Ruby, F
1 What is findbugsfindbugs is a static analysis tool that examines a class or JAR file and compares bytecode to a set of defect patterns to identify possible problems. With the static analysis tool, you can analyze the software without actually running the program. Rather than determining the intent of a program by par
Order of execution: (priority is from high to low.) )
Static code block >mian method > Construction Code block > Construction method.
Where the static code block is executed only once. The construction code block executes every
What is FindBugs?
FindBugs is a static analysis tool that finds bugs in Java programs . It compares the bytecode to a set of defect patterns by examining the class or jar file to identify possible problems. With the static analysis tool, you can analyze the software wit
Checkstyle is a project under SourceForge that provides a tool to help Java developers comply with certain coding specifications. It automates the process of code specification checking, freeing developers from this important but tedious task. It can check the code according to the set coding rules. For example, the specification of variable name, method body max
is urgent, give examples to be considered, but suffice to explain the problem. an application needs to access the database and must specify a connection string in order to obtain a connection. For a program, the connection string is generally fixed after it is run. A, set in the construction code block or construction method, then each time you create the object must be set once, repeat, very troublesome. B, in the program to write the connection str
WTP is very convenient to use the Eclipse IDE for Java EE developers, but it is too large and I like to configure on demand. First, let's understand what WTP is. The WTP (Web tools Platform) project expands on the Eclipse platform and is a toolset for developing Java EE WEB applications. WTP contains the following
Tags: directory mouse list using comparison window installation findbugs ChinaOriginal: Https://www.oschina.net/p/findbugsFindBugs is an Eclipse plug-in tool that can statically parse the source code for possible bugs. It examines the class or JAR file and compares the bytecode to a set of defect patterns to identify possible problems. With the static
OS is Ubuntu 12.04.4 LTS, then you have installed GCC version 4.8 and g++ 4.8.Then execute the following command:# sudo apt-get install python-software-properties# sudo add-apt-repository ppa:ubuntu-toolchain-r/test# sudo apt-get update# sudo apt-get install gcc-4.8 g++-4.8# sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 60 --slave /usr/bin/g++ g++ /usr/bin/g++-4.84. Then continue# cd infer# ./update-fcp.sh# ../facebook-clang-plugin
operation, and after the operation, after the memory growth. Hprof. If memory is growing, it is advisable to 3, 4 times. Then open the histogram (histogram) view separately, and in the object list, compare the retained size changes for each object.The first bit is not necessarily a leaked object, it is possible that it itself is a normal consumption of memory.The object of the leak was the sudden rise in the rankings. The distinguishing method is to look at the memory address of each object, th
Shortcut keys in eclipse quickly generate common code (e.g., parameterless, parametric constructs, set, get methods), and important memory analysis in Java (stacks, heaps, method areas, Chang)These are the shortcuts in eclipse that quickly generate common
Suppose you have a class like this:public class Utils { Static { LOG.I ("Static", "isload!"); }Public static void Staticcode () {}public int value;public void Nostaticcode () {}}When will the static code block be loaded when the whole program is running?1. W
block, I'm going to show a program without the main method, javac it without any errors. public class Test {static { System.out.println ("Static"); Nbsp;system.exit (0);}}
Variables in Java are broadly divided into two broad categories: member variables and local variables.
member variables:
Variables defined within the class body are called member variables;
A Brief Introduction to several memory regions of the jvm virtual machine:
Method Area: There is a memory area dedicated to storing loaded class information, constants, static variables, and method code in the java Virtual Machine,
Constant pool: a constant pool is a part of the method area. It is mainly used to store information such as symbolic references in co
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