How to Set Up a Java EE Development Environment with Liberty Server and Eclipse
How to Download and Use Liberty Server for Eclipse
If you are looking for a fast and easy way to develop Java EE applications, you might want to consider using Liberty Server for Eclipse. In this article, we will show you how to download and use this powerful tool for your development needs.
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Introduction
Liberty Server for Eclipse is a combination of WebSphere Liberty, a lightweight and modular application server, and Eclipse, a popular integrated development environment (IDE) for Java. Together, they provide a great local development environment for developing Java EE applications.
What is Liberty Server for Eclipse
Liberty Server for Eclipse is a plugin that integrates WebSphere Liberty with Eclipse. It allows you to create, run, test, and debug Java EE applications on Liberty servers from within your IDE. You can also edit Liberty server.xml configuration files, develop MicroProfile applications, use Liberty dev mode functions, and access the Liberty Dashboard for organizing your projects.
Benefits of Liberty Server for Eclipse
Some of the benefits of using Liberty Server for Eclipse are:
It is fast and easy to install and use. You can install Liberty Server for Eclipse from the Eclipse Marketplace or from the WebSphere Developer Tools. You can also create and manage Liberty servers from the Servers view in Eclipse.
It supports the latest Java EE standards and MicroProfile specifications. You can develop applications using Java EE 8 or 9, as well as MicroProfile 4.1 or higher. You can also use Content Assist, validation, and hover-over descriptions for MicroProfile APIs and Liberty config elements.
It enables rapid development and testing with Liberty dev mode. Dev mode automatically detects your code changes and deploys them to your running app, without having to restart the server. It also runs tests on demand or automatically after every change, and shows test reports in the IDE.
Installing Liberty Server for Eclipse
To install Liberty Server for Eclipse, you need to have some prerequisites and follow some steps.
Prerequisites
Before you install Liberty Server for Eclipse, you need to have:
A JDK (Java Development Kit) version 8 or higher. You can download one from .
Eclipse IDE for Enterprise Java Developers version 4.9 or higher. You can download it from .
An internet connection to download the plugin and the Liberty runtime.
Steps to install Liberty Server for Eclipse
To install Liberty Server for Eclipse, follow these steps:
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Open the Eclipse Marketplace from Help -> Eclipse Marketplace menu.
Type Liberty in the search box and hit Enter to search it.
In the result list, find IBM Liberty Developer Tools, then click Install button to start the installation.
Select the features you want to install, such as WebSphere Application Server Liberty Tools or Open Liberty Tools, then click Confirm button.
Review the license agreements and accept them, then click Finish button.
Restart Eclipse IDE to apply the plugin.
Creating a Liberty Server in Eclipse
Once you have installed Liberty Server for Eclipse, you can create a new Liberty server in your IDE. You can either use an existing installation of WebSphere Liberty or Open Liberty, or download one from the internet.
Creating a runtime environment in Eclipse
The first step is to create a runtime environment in Eclipse, which is a reference to a Liberty installation on your file system. To do this, follow these steps:
Open the Preferences dialog from Window -> Preferences menu.
Expand the Server node and select Runtime Environments.
Click Add button to create a new runtime environment.
Select WebSphere Application Server Liberty or Open Liberty as the server type, then click Next button.
If you have an existing installation of Liberty, select it from the list or browse to its location. If you want to download a new Liberty runtime, select Download and install a new runtime option and choose the version and edition you want. Then click Next button.
Give a name to your runtime environment and optionally change the default JRE (Java Runtime Environment) or enable features. Then click Finish button.
Creating a server in the Liberty profile
The next step is to create a server in the Liberty profile, which is a configuration file that defines the features and settings of your Liberty server. To do this, follow these steps:
Open the Liberty Dashboard from Window -> Show View -> Other -> Liberty Dashboard menu.
Click Create New Server button to create a new server.
Select the runtime environment you created in the previous step, then click Next button.
Give a name to your server and optionally change the default host name or HTTP port. Then click Next button.
Select the features you want to enable for your server, such as Java EE 8 Web Profile or MicroProfile 4.1. You can also add additional features from the list or by typing their names. Then click Finish button.
Creating a server in Eclipse
The final step is to create a server in Eclipse, which is a representation of your Liberty server in your IDE. To do this, follow these steps:
Open the Servers view from Window -> Show View -> Servers menu.
Right-click on the Servers view and select New -> Server menu.
Select WebSphere Application Server Liberty or Open Liberty as the server type, then click Next button.
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