Install Eclipse for Java development

Eclipse Installation for Java Instalar Eclipse IDE para Java

Actual programs can have hundreds or thousands of classes. Working with the console can be a nightmare. The reality is that most programmers use an "Integrated Development Environment" (IDE).

Eclipse is the most widely used IDE for Java development. It's open source and free. Eclipse, can extend its functionality by the development of plugins. There are many Eclipse versions to program in different languages ​​and even many Java versions.

Other "Integrated Development Environments"

There are other development environments for Java, like Netbeans and IntelliJ IDEA.

Eclipse tools and components for Java

There are many versions of Eclipse for Java and they also can be extended by plugins. It is very difficult to list all its components because they are more every day, but below we have a short list of the most used:

Download and Install Eclipse

Write in Google; "Download eclipse" and or something similar will appear. There you can choose from many Java versions. I recommend the lightest: "Eclipse IDE for Java Developers, 153 MB". This is how it appears the day I wrote this tutorial.

Download and unzip the zip file in for example "c: \".


Run c:\eclipse\eclipse.exe and select the workspace. This is where Eclipse will save all projects.

I recommend you create the workspace inside the Eclipse installation; “c:\eclipse\workspace”.

In the tutorials we are going to work with different versions of Eclipse so it is better to have different workspaces.



Seleccion de área de trabajo

Create a project and run a class

File - New - Java Project

Proyecto Hola Mundo

IMPORTANT: Pay attention to choose the right JDK installed as JRE in the previous window. If it is not displayed, go to "Configure JREs" and add it.

Open the "Hello-world" project and copy the code from the previous example in the src directory. If you copy and paste the text of the class, selecting "src", the file is automatically created. To run the class, right-click on the class and then Run As - Java Application.


Eclipse uses the JDK selected to obtain the libraries, compile and run on the JVM. Looking at the directory “C:\eclipse\workspace\hello-world”, we will see that there is a bin directory.

This directory holds the files ".class". There is one for each class, in the src directory.

Clase Hola mundo y directorio bin