This article describes the static Main method in groovy. First look at the following code:
class Test1 { public Test1() { println "TEST1" } } class Test2 { public Test2() { println "TEST2" } static void main(args) { new Test1() } }
This code does not run with either the Groovy command line or the Groovyconsole, as if it were a reference
Groovy.lang
We say Java project development based on groovy language is an agile development, and the groovy language itself offers a lot of agility in addition to using grails as a Web development platform.
We know that in the Java language, we use the Equals method to determine whether the values of two strings are equal, and "= =" as symbols that determine whether two object references are the same. It turns out th
Tips on Jenkins Security TestingToday, mickey Niu sent an article about hacking Jenkins, which has benefited a lot. Although it is not very profound, after reading several related articles, he recorded the key points and left notes for future security tests. Article link: http://www.labofapenetrationtester.com/2014/08/script-execution-and-privilege-esc-jenkins.html http://www.labofapenetrationtester.com/201
determines whether the property of the field is Boolean and, if so, calls the Isxxxx () method, otherwise the Getxxxx () method is invoked.
At the time of the call, the name of the field first gets the corresponding "is" or "get" method name, and then the methods object is obtained, and finally the Invoke method of the object is invoked to get the return value.
The whole process is quite tedious.
But in the groovy language, we set or get property
The observer model is one of the more commonly used patterns and the basis for other common patterns, such as the MVC pattern, which is a model based on observer mode.
In the Java language, the implementation of observer mode is very simple, that is, let the observer inherit the observable class, and let the observer implement the Observer interface. These basics are used in my words--"mantis, Siskin--from an idiom to the Observer model," which is no longer described here.
If we have used obse
In the groovy language, there are three ways to analyze methods and properties during the runtime, respectively:
First, inherit from the Java language reflection mode.
Second, use the "Respondsto" and "Hasproperty" methods.
Third, use the "Hasmetamethod" and "Hasmetaproperty" methods.
All of the above three methods can be in the runtime to analyze whether a method or attribute exists, I believe we see here, we must think that there is no differenc
Exploration of groovy mop 10 interceptor 2
In this series of "explore groovy mop nine interceptor 1", we have introduced in detail all aspects of a simple interceptor class, so that we have a preliminary foundation of the interceptor. In this article, we need to use the interceptor class to implement our AOP programming on the basis of the previous interceptor class.
First, in the first part of this serie
ArticleDirectory
1.1. Download Eclipse IDE for C/C ++
1.2. install Java 7 if you have not
1.3. Create a launcher to run eclipse from your Ros-sourced Shell
Posted @From [freedomshe]
Because groovy was previously dominated by rosbuild workspace, the official IDE environment configuration is described in the rosbuild sample, and currently (2013.5) does not mention the catkin to replace rosbuild (refer1 http://www.ros.org/wiki/ID
Requirement: The Boostapp column in the index is used as the base score for the rating, and is attenuated by time based on the Carpublishtime (Data Refresh Time field).Implemented based on groovy scripting.1. Query Script mode:{"Fields ": [ "Boost", "Ucarid", "Boostapp", "Carpublishtime" ], "query": { " Function_score ": {" query ": { " Match_all ": {} }, " Functions ": [ { " Script_score ": {
Transferred from: http://atobs.blogspot.fr/2012/08/match-only-files-that-match-pattern-in.html#!/2012/08/ Match-only-files-that-match-pattern-in.htmlGroovy:In Groovy we can use the Eachdirrecurse and Eachfilematch () methods to get all the file names displayed.def pattern = ~/.*\.java/def dirname= "/usr/local/mysource"new File ("$dirname"). Eachdirrecurse {dir-Dir.eachfilematch (pattern) {myfileprintln "$myfile"}//Eachfilematch}//EachfilematchPython:I
The best way to develop Apache camel applications is TDD, because each component of camel is independent and testable.There are a lot of good test frameworks now, and the BDD (behavioral test Drive) with groovy Spock framework is relatively good and useful.First, we start with the simplest processor.Write Test Cases First:Package Com.github.eric.camelImport Org.apache.camel.ExchangeImport Org.apache.camel.impl.DefaultCamelContextImport Org.apache.came
In the Groovy language, the system has APIs to help us directly do this, which is quite simple. For example, to determine whether a string is of the int type, you only need to write the following code:
DefNum = '23'
PrintlnNum. isInteger ()
The running result is:
True
The following code is used:
DefNum1 = '2. 3'
PrintlnNum1.isInteger ()
The running result is:
False
Similar methods include:isDouble(),isFloat(),isLong(),isNumber(),isBigDecima
Eclipse:Version:Juno Service Release 2Greclipse plugins:http://dist.springsource.org/release/greclipse/e4.2/There are two installations in this session:Other follow-up instructionsCreate a groovy Project after installationOther operations are consistent with creating Java project, no longer repeatingCode to put up a test: Package Secondgroovypackage class regextest { static Main (args) { "Hi, baby!" ("Harry One" =~/(\w+) (\d+)/). ea
Speaking of the "in" keyword is rarely used in the Java language because it is introduced later, i.e. the JDK5 enhanced for loop. The groovy language also retains this functionality so that we can write code similar to the following:
def list = [1,2,3] for(i in list) { println i }
The results of the operation are:
1 2 3
This enhanced for loop can also be used on loops on the map, such as:
def map = [a:"1",b:"2"]
Open File->new->project ... Wizard, select Groovy in the left pane.In the right pane, specify the following settings:Project SDK: Specifies the JDK used by the project.Groovy Library: Specify your Groovy SDK or click Create to select one from the list to open it.
Click Next, specify the information for the project, and then click Finish. in the
Project Tools window, right-click the project directory and
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.