分类： Eclipse Coding

I’m using Eclipse for quite a long time. No doubt eclipse is one of the best IDEs available today. 

But I think J2EE development was never easy with eclipse. Recently I
downloaded MyEclipse Enterprise Workbench and all my problems were
solved. MyEclipse is a plugin to eclipse for developing and deploying
J2EE applications. It has some very good features which really ease the
J2EE development.

The main feature I found very useful is configuring the app servers in eclipse for deployment of the applications. It provides the connectors for most of the app servers as Tomcat, JBoss, Websphere, Weblogic. The other important features are CSS, XML, JSP, SQL editor, support for Struts, XDoclet, Hibernate, EJB. Also provides native JSP debugging as well as servlet debugging. Looking at these features one can easily say that MyEclipse is the tool for easy and rapid J2EE application development. 

Note: run.bat run directly after decompression under windows. If it is Linux or Mac OS, run Java -jar *.jar to enter the crack directory, like other steps.
Crack method:

The first step: and the version selected Professional user name Usercode (other may also, not tried)

The second step: Click systemid

The third step:
The menu Tools->RebuildKey

The fourth step: click the active button in the display area

LICENSE_KEY

ACTIVATION_CODE

ACTIVATION_KEY

You do not need to open MyEclipse to activate the page input. Remember.

The fifth step: open the menu Tools-> ReplaceJarFile, pop-up file selection dialog box, select the plugins folder to the common folder under the MyEclipse installation directory.
Click the open button, the program will get stuck, don’t worry, is to replace a file! After a while, will output information, documents have been replaced

The sixth step: the menu Tools->SaveProperites

Now open your MyEclipse has no need to enter an activation code what

Learn how to make the best of lambdas and virtual extension methods.

Lambda expressions, also called closures, are a short-form replacement for anonymous classes. Lambda expressions simplify the use of interfaces that declare a single abstract method, which are also called functional interfaces. In Java SE 7, a single method interface can be implemented with one of the following options.

• Create a class that implements the interface.
• Create an anonymous class.

A lambda expression can be used to implement a functional interface without creating a class or an anonymous class. Lambda expressions can be used only with interfaces that declare a single method.

Lambda expressions are designed to support a multicore processor architecture, which relies on software that provides parallelism, which in turn, improves performance and reduces completion time.

Benefits of lambda expressions include the following:

• Concise syntax
• Method references and constructor references
• Reduced runtime overhead compared to anonymous classes

Prerequisites

To follow along with the examples in this article, download and install the following software:

• JDK 8

Syntax of Lambda Expressions

The syntax of a lambda expression is as follows.

(formal parameter list) ->{ expression or statements }

The parameter list is a comma-separated list of formal parameters that match the formal parameters of the single method in a functional interface. Specifying the parameter types is optional; if the parameter types are not specified, the types are inferred from the context.

The parameter list must be enclosed in within parentheses except when a single parameter is specified without the parameter type; a single formal parameter can be specified without parentheses. If a functional interface method does not specify any formal parameters, empty parentheses must be specified.

The parameter list is followed by the-> operator, which is followed by the lambda body, which is a single expression or a statement block. The lambda body has a result that must be one of the following:

• void, if the functional interface method result isvoid
• A Java type, primitive type, or reference type that is the same as the return type of the functional interface method

The lambda body result is returned according to one of the following options:

• If a single expression is used as the lambda body, the expression value is returned.
• If the method has a return type and the lambda body is not a single expression, the lambda body must return a value using areturn statement.
• If the functional interface method result isvoid, areturn statement can be provided, but that is not required.

A statement block must be enclosed within curly braces ({}) unless the statement block is a method invocation statement for a method whose result isvoid. The lambda body result must be the same as the result of the single method in the functional interface. For example, if the functional interface method result isvoid, the lambda expression body must not return a value. If the functional interface method has a return type ofString, the lambda expression body must return aString. If the lambda body is a single statement and the method has a return type, the statement must be areturn statement. When a lambda expression is invoked, the code in the lambda body is run.

Functional Interfaces

A lambda expression is used with a functional interface, which is an interface with essentially one abstract method; the interface can contain a method that is also included in theObject class. Some examples of functional interfaces arejava.util.concurrent.Callable—which has a single method,call()—andjava.lang.Runnable—which has a single method,run().

As a comparison, an anonymous class for an interface involves specifying an instance creation expression for the interface and the compiler creating an instance of a class that implements the interface. Unlike an anonymous class, which specifies the interface type (or class type), a lambda expression does not specify the interface type. The functional interface for which a lambda expression is invoked, also called the target type of a lambda expression, is inferred from the context.

Target Type of a Lambda Expression

A lambda expression has an implicit target type associated with it because an interface type is not explicitly specified. In a lambda expression, the target type of a lambda conversion must be a functional interface. The target type is inferred from the context. Therefore, lambda expressions can be used only in contexts in which the target type can be inferred. Such contexts are

• A variable declaration
• An assignment
• A return statement
• An array initializer
• Method or constructor arguments
• A lambda expression body
• A ternary conditional expression
• A cast expression

How do I reset my Eclipse environment configuration to use default settings?

Answer
The Eclipse IDE has both workspace specific settings and generic IDE settings.

The workspace settings are saved inside the workspace folder which is specified when Eclipse starts up the first time. These settings are saved in a folder called ‘.metadata’ inside the workspace location. You can change the location of the workspace in Eclipse by using the ‘File’ menu and then clicking on the ‘Switch Workspace’ option.

Note: If you delete your workspace folder you will also delete projects located inside this folder. If you wish to preserve your projects only delete the ‘.metadata’ directory.

Eclipse will save all the non workspace specific settings in a different location. This will depend on whether you are using a Linux or Windows environment.

Windows*: C:Documents and Settings<user>Application DataARMARM Workbench IDE
Linux: /home/<user>/.awide

You can safely delete the configuration folder to force Eclipse to start up using the default settings. Eclipse will re-create the configuration folder with all the configuration files.

MyEclipse is a powerful enterprise-level integrated development environment developed on the basis of eclipse and its own plug-ins. It is mainly used for Java, Java EE and mobile application development. So many users say that when using this MyEclipse to write articles, they may need to introduce jar packages. How should they operate? Here is an introduction to you through this article.

Software Name:
MyEclipse 2017 ci8 cracking patch + sinicized toolkit + activation tool (with cracking tutorial)
Software size:
2.39MB
Update time:
2017-09-22

1.Import the jar package into the Java project.

First, create a new Java Project in MyEclipse, name is optional, after creating, right-click on the project

Click Build Path, click Configure Build Path, and then jump out of a Library window and click the fourth Add Library on the right.

Double-click User Library, click User Libraries, and click New

Then you pop out of a window to fill in the file name of the jar package and click OK.

Select the third Add JARs on the right, find the location of the file you downloaded in the jar package, select the jar package, click OK, Finish

Then the jar package is imported successfully. The Java Project you just created will have a folder with the name you just filled in. The folder is the jar package you put in.

2.Import jar packages into web projects.

Unlike importing jar packages in Java projects, importing jar packages in web projects is relatively simple. When you create a web project with MyEclipse, you automatically create a lib project under WEB-INF by copying the jar package into the Lib folder. Then right-click on the project, click Build Path, click Configure Build Path, and a Libraries window pops up. Click Add External JARs to find the location of the file under the jar package and select the jar package. Click OK, Finish. The jar package was imported successfully.

myeclipse import导入项目时no projects are found to import解决办法

原因：缺少.

.project和.classpath文件
1.在myeclipse中新建一个和你要导入的项目同名的项目.

2.在新建的项目中找到.project和.classpath文件，复制。

3.将这两个文件粘贴在要导入的项目的根目录下.

4.删除第2步创建的项目，导入你的项目。

5.OK！

1. Overview of the Eclipse open source project

1.1. The Eclipse IDE, other projects and a short history

In November 2001, a consortium was formed by IBM to support the development of the Eclipse IDE as an open source software. In 2004 it became the Eclipse Foundation, which is a vendor neutral foundation where no single company has control of the direction.

The Eclipse Foundation is a non-profit, member supported corporation.

It helps to cultivate both its open source community and its ecosystem of complementary products and services.

The mission of the Eclipse Foundation is enable the development by providing the infrastructure (version control systems, code review systems, build servers, the download sites, etc.) and a structured process. The Eclipse Foundation does not work on the Eclipse code base, i.e., it does not have employee developers working on Eclipse projects. Eclipse projects follow a very well defined development process description.

In 2018 the Eclipse foundation staff consists of approximately 30 employees.

These days, the Eclipse open source community consists of more than 150 projects covering different aspects of software development. For example, Eclipse projects hosts the Jakarta EE project (formly known as Java EE), tooling for JavaScript development and the Jetty webserver.

1.2. Eclipse IDE releases

The Eclipse IDE open source project provides regular releases. It used to be one large release per year but in 2018 this was changed to one release every three months.

Release	Rename name	Release year
4.12	2019-06	2019
4.11	2019-03	2019
4.10	2018-12	2019
4.9	2018-09	2018
4.8	Photon	2018
4.7	Oxygen	2017
4.6	Neon	2016
4.5	Mars	2015
4.4	Luna	2014
4.3	Kepler	2013
4.2	Juno	2012

1.3. The Eclipse Public License

The Eclipse Public License (EPL) is an open source software license. The EPL is designed to be business-friendly. EPL licensed programs can be used, modified, copied and distributed free of charge. The consumer of EPL-licensed software can choose to use this software in closed source programs.

Only modifications in the original EPL code must be released as EPL code. This can for example be done by filling a bug report at the public Eclipse bug tracker and by uploading a Gerrit change.

The Eclipse Foundation validates that source code contributed to Eclipse projects is free of intellectual property (IP) issues. This process is known as IP cleansing. Contributions with more than 1000 lines of code require the creation of a Contribution Questionnaire, and a review and approval by the IP team.

The permissive EPL and the IP cleansing effort of the Eclipse Foundation makes reusing the source code of Eclipse projects attractive to companies.

2. Different Eclipse IDE distributions

2.1. The Eclipse IDE for Java development

Most people know Eclipse as an integrated development environment (IDE) for Java. In 2014 the Eclipse IDE is the leading development environment for Java with a market share of approximately 65%.

The Eclipse IDE can be extended with additional software components. Eclipse calls these software components plug-ins. Plug-in can be grouped into features.

Several projects and companies have extended the Eclipse IDE or created stand-alone applications (Eclipse Rich Client Platform) on top of the Eclipse framework.

2.2. The Eclipse IDE distributions from the Eclipse Packaging Project (EPP)

The Eclipse IDE is also available as an IDE for other languages, ranging from C, C++ to Lua, Python, Perl and PHP. Several pre-packaged Eclipse distributions are available for download. These pre-packaged solutions are provided by an Eclipse project called the Eclipse Packaging Project (EPP).

2.3. Developer and milestone downloads

The Eclipse project has a simultaneous release every year at the end of June. In June 2016 the Eclipse 4.6 (Neon) version was released.

The top-level Eclipse project creates regular builds of the next releases including JDT, PDT and the Eclipse platform projects. This is called the Eclipse SDK.

You find Stable Builds which are tested by the community. These milestone (ending with M and a number) and release candidate (RC) builds are created based on a predefined time schedule. Integration (I) and Nightly (N) builds are test builds which are automatically created. They are not manually tested.

In general, milestone and RC builds are relative stable compared to integration builds, but may not contain the latest features and patches.

Hello, today i will show you how to create java project with myeclipse. It is same in eclipse, but i use myeclipse so i just show you how to create it with myeclipse.

Before using MyEclipse to start writing java code, you should download and install JDK and MyEclipse first. I use jdk1.7 in my example, so i prefer you to use jdk1.7 also.

You need goto http://www.eclipse.org/downloads/ to download eclipse in a zip file. Unzip the downloaded zip file into a folder and create a shortcut for eclipse executable file in desktop. Then you can click the shortcut to start eclipse.

After launch eclipse.

1. Click Window —> Preferences in the top toolbar.
2. Click Java —> Installed JREs in left panel of the popup window.
3. Check whether the jdk1.7 is added or not in right panel.
4. If not, click “Add” button to add jdk1.7(should be jdk, not jre)

change window preferences

check just installed jdk in eclipse window preferences

Now we can create our first java project using myeclipse.

First, you need to open the myeclipse enterprise workbench. After you open it, Click File —> New —> Java Project.

How to create java project with myeclipse File—New—Java Project

And then, input the project name Dev2QASampleCode because my project is used to create selenium webdriver example code for my website dev2qa.com, so i just use the name Dev2QASampleCode.

Select the location where you store the jave code for your project. I choose following directory. C:/Workspace/iwriter_articles/dev2qa.com/articles/SourceCode

How to create java project with myeclipse project settings

Then click next, You can see default src folder and bin folder under Dev2QASampleCode. We do not need to add any jar library now, we will add them if we need them later. Then click finish button, now the project has been created, you can create example java code for dev2qa.com now. Thanks.

READ : Java I/O(Input/Output) Overview
How to create java project with myeclipse src and bin folder

Following is a youtube video for above process.

Life is full of choices and dilemmas, and for a developer one of the greatest queries is whether to use a text editor or an Integrated Development Environment (IDE).  Of course, using the latter provides for a much more complete experience, and yet, it might not be an absolute must in all situations. But how can one decide?  There is a plethora of articles and opinion forums, so we’ve taken three to assist you with this choice.

Follow your heart (and needs)
As Erik Dietrich puts it in this article, no single tool will do the trick forever, so it’s perfectly normal – and highly advisable, for that matter – to make the change whenever needed.  His advice is simple: pick what you truly need at the required moment, and what makes the most sense.  What does that mean?  The variables are the language used, project complexity, your team preferences, community choices, and the cost — even though some editors and even IDEs are either free or offer a freemium model, the extra plug-ins that you might specifically require will, usually, carry a price tag.

An IDE — a cure for all?
It might seem that an IDE would be the choice due to its completeness.  Indeed, it has many advantages, as Dan Albright explains here: all the tools you need come together in a single editor, debuggers are part of the picture (most of the time), there is an array of what he calls “convenience features” (an ability to navigate easily, complete your code automatically, etc.), as well as tools that help with development automation, such as source version control, among others. Yet, most IDEs do not support all the languages, and sometimes there simply isn’t a need for a full-blown development environment.  If your project is straightforward — done with Arduino or Ruby, as he exemplifies — a code-centric text editor will do the job.  Some developers even prefer working with command-line tools (in this case, they get the benefit of learning how their machines work at a basic level).  Again, it all depends on what you are looking for!

A text editor, an IDE… both?!
If a text editor is the right choice for you, then Matt Rozema’s advice in this article will come in handy: an editor must allow you to accomplish all the basic tasks at hand, be useful in different work situations and, of course, be updated regularly — you would want the certainty of having the best tools possible. But, above all, an editor is the way to go if your project has open-source tooling and if you are very comfortable with your source code. However, if you are hopping onto a new project and aren’t that much at ease navigating through a huge codebase, then an IDE is the way to go. He even takes it further: sometimes a combination of both is the right choice, because if you love your IDE’s tools but hate the editor features, then there is no reason for not using both. The solution is simple — use the editor for your coding, and the IDE for its tools.

In closing
Here at Genuitec, we’ve been developing IDEs and IDE tooling for a very long time – the fact that we’re biased towards IDEs should come as no surprise to anyone! We believe in the complete IDE experience – we developed Eclipse’s first JSP debugger way back in 2003, and are at the forefront of debugger tech even now, with our full-featured TypeScript and Angular debuggers. We have all the IDE conveniences, like integrated version control, code completion, validation, formatting, efficient navigation, etc., but we also realize the flexibility and power of command-line interfaces (CLIS). Our Angular tooling exposes its use of CLIs so you can use them too, if you so choose, without having to leave the IDE!

In the end, the choice is yours: whether you go for an IDE or a text editor, there is quite a variety to choose from. Genuitec’s IDE repertoire includes Angular IDE and MyEclipse. Angular IDE is perfect if you’re looking for world-class Angular tooling, in a ready-to-use IDE; however, if you have an existing Eclipse install, try our CodeMix plugin suite for all-round modern web features. Finally, if you’re looking for a truly full-stack IDE, from Java EE to the modern web, give MyEclipse a shot.

 

Eclipse noob and web dev noob here. I have inherited an eclipse project which has a (Tomcat) server that I can start/stop.

How can I make this a “standalone” server, which does not require me to start eclipse and click run?