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Eclipse Interview Questions & Answers - Learning Mode
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Eclipse Interview Questions & Answers - Learning Mode

Eclipse is an integrated development environment (IDE) used in computer programming, and is the most widely used Java IDE. It contains a base workspace and an extensible plug-in system for customizing the environment. Eclipse is a Java-based open source platform that allows a software developer to create a customized development environment (IDE) from plug-in components built by Eclipse members. Eclipse is managed and directed by the Eclipse.org Consortium.

Try Eclipse Interview Questions & Answers - Exam Mode

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Eclipse Interview Questions & Answers - Learning Mode
Try Eclipse Interview Questions & Answers - Exam Mode
Question: How to create, deploy a servlet and jsp file in eclipse?

Answer: That's a good question. Eclipse is an IDE which stands for Integrated Development Environment. As such it stands as a plain IDE and not integrated with any Application Server into which you can deploy and run any server side components such as Servlet, Jsp file etc.,

Using eclipse you can definitely have those files built (as any other java file or xml/html/jsp files). You can very well build an application using Ant script or the built in command (Build Project - you can get it in th Source: CoolInterview.com
Question: What is EMF?

Answer: The Eclipse Modeling Framework is a Java/XML framework for generating tools and other applications based on simple class models. EMF helps you rapidly turn models into efficient, correct, and easily customizable Java code. It is intended to provide the benefits of formal modeling, but with a very low cost of entry. In addition to code generation, it provides the ability to save objects as XML documents for interchange with other tools and applications.

Models can be created using annotate Source: CoolInterview.com
Question: What is included in the Rich Client Platform?

Answer: Eclipse Runtime, SWt, JFace, Workbench Source: CoolInterview.com
Question: What are extensions and extension points?

Answer: Loose coupling in Eclipse is achieved partially through the mechanism of extensions and extension points. When a plug-in wants to allow other plug-ins to extend or customize portions of its functionality, it will declare an extension point.
The extension point declares a typically a combination of XML markup and Java interfaces, that extensions must conform to. Plug-ins that want to connect to that extension point must implement that contract in their extension.

The key attribute is th Source: CoolInterview.com
Question: What does the AWS Toolkit for Eclipse do?

Answer: Based on existing Eclipse projects, the AWS Toolkit for Eclipse provides management features for Amazon EC2 and Amazon SimpleDB using familiar tools in the Eclipse IDE.

* Amazon EC2 Management ? Based on the Eclipse Web Tools Platform, the AWS Toolkit for Eclipse guides Java developers through common workflows and automates tool configuration, such as setting up remote debugger connections and managing Tomcat containers.
* Amazon SimpleDB Management ? Administer your Amazon Sim Source: CoolInterview.com
Question: How to write unit test for eclipse plugin?

Answer: Use Eclipse plugin fragments to develop PDE Unit tests for each plugin.<br>Two ways to run the unit test: Use JUnit Plug-in Test Launcher to test in GUI<br>Use PDE headless build to integrate into the automatic build and test environment. Source: CoolInterview.com
Question: Will the AWS Toolkit add support for other services?

Answer: The goal of the AWS Toolkit for Eclipse is to make it easier for all AWS Java developers to build software. We?re eager to hear our customer?s feedback and add support for additional features and/or services they need most.

Developer Resources

* Documentation
* Sample Code & Libraries
* Articles & Tutorials
* Amazon Machine Images (AMIs)
* Public Data Sets
* AWS Security Center
* User Groups

Developer Tools

* AWS Mana Source: CoolInterview.com
Question: Do we need to explicitly invoke org.eclipse.swt.graphics.Image.dispose()?

Answer: Application code must explicitly invoke the Image.dispose() method to release the operating system resources managed by each instance when those instances are no longer required. This is because that the Java finalization is too weak to reliably support management of operating system resources. Source: CoolInterview.com
Question: Where did Eclipse come from?

Answer: Eclipse started out as proprietary technology, led by IBM?s subsidiary, Object Technology International (OTI). IBM wanted to reduce the large number of incompatible development environments being offered to its customers and to increase the reuse of the common components in those environments. By using the same common framework, development teams could leverage one another?s components, integrate to a high degree, and allow developers to roam among projects. Source: CoolInterview.com
Question: What is eclipse?


Answer: Eclipse is a software platform comprising extensible application frameworks,tools,and runtime library for software development and management.It is primarily written in java to provide software developers and administrators an IDE. Source: CoolInterview.com
Question: Why does the toolkit only support Tomcat?

Answer: Tomcat is a popular application server, but it is by no means the only application server used by Java developers. Now that the project has launched, we will listen to our customer feedback to determine additional application servers to support. The project is open source, so our customers can contribute support for additional application servers. Source: CoolInterview.com
Question: Is there a built-in facility to check whether a given value is valid compared to the effective facets of its type?

Answer: To determine if a literal is valid with respect to a simple type, you can use either XSDSimpleTypeDefinition.isValidLiteral or XSDSimpleTypeDefinition.assess. Source: CoolInterview.com
Question: Do we need to explicitly invoke org.eclipse.swt.graphics.Image.dispose()?

Answer: Application code must explicitly invoke the Image.dispose() method to release the operating system resources managed by each instance when those instances are no longer required. This is because that the Java finalization is too weak to reliably support management of operating system resources. Source: CoolInterview.com
Question: What is the AWS Toolkit for Eclipse?

Answer: The AWS Toolkit for Eclipse is a plug-in for the Eclipse Java IDE that makes it easier for developers to develop, debug, and deploy Java applications using Amazon Web Services. With the AWS Toolkit for Eclipse, you?ll be able to get started faster and be more productive when building AWS applications. Source: CoolInterview.com
Question: Why do I get the error "org.eclipse.swt.SWTException: Invalid thread access"?

Answer: SWT implements a single-threaded UI model often called apartment threading. In this model, only the UI-thread can invoke UI operations. SWT strictly enforces this rule. If you try and access an SWT object from outside the UI-thread, you get the exception "org.eclipse.swt.SWTException: Invalid thread access".
The following code sets the text of a label from a background thread and waits for the operation to complete: display.syncExec( new Runnable() { public void run(){ label.setText(text); } Source: CoolInterview.com
Question: When does a plugin get started?

Answer: Each plug-in can be viewed as having a declarative section and a code section. The declarative part is contained in the plugin.xml file. This file is loaded into a registry when the platform starts up and so is always available, regardless of whether a plug-in has started. The code section are laze loaded by default. They are activated only when their functionality has been explicitly invoked by the user. Source: CoolInterview.com
Question: Can I modify the eclipse toolkit?

Answer: Yes. The toolkit is available under the Apache 2.0 license, which allows customers to modify the source code. Customers can access the source code from our project on SourceForge.net. Source: CoolInterview.com
Question: What is Display, what is Shell?

Answer: The Display class respresents the GUI process(thread), the Shell class represents windows. Source: CoolInterview.com
Question: Why is AWS building an Eclipse plug-in?

Answer: Many software developers use an Integrated Development Environment (IDE), such as the Eclipse Java IDE, to build software based on Amazon Web Services. By providing an Eclipse plug-in, we aim to help make it easier for software developers to do so. The AWS Toolkit for Eclipse, based on the Eclipse Web Tools Platform, guides Java developers through common workflows and automates tool configuration, such as setting up remote debugger connections and managing Tomcat containers. Previously, develope Source: CoolInterview.com
Question: What are the differences between 'Require-Bundle' and 'Import-Package'?

Answer: There are two complementary ways of depending on something from outside a given plug-in; Require-Bundle and Import-Package.<br><br>Using the Require-Bundle manifest header, plug-ins specify an explicit dependency on a specific bundle and version. As such, the required bundles are placed logically on the dependent plug-in's classpath.<br><br>Import-Package is used to declare a dependency on a package without knowing which exact bundle will provide it. Any bundle in the Source: CoolInterview.com

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