Eclipse is a Java-based application and, as such, requires a Java Runtime Environment or Java Development Kit (JRE or JDK) in order to run. Note that on recent versions of Mac, a full JDK needs to be installed, not just a JRE; see instructions below.
Table Of Content
1- JDK vs JRE
The first time you run Eclipse, you need to choose a workspace (a folder that stores your projects). Step 3: Make Sure Eclipse is Running Java 8. Set Eclipse compiler to compliance level 1.8: Window $ rightarrow$ Preferences $ rightarrow$ Java $ rightarrow$ Compiler. Set the compliance level to 1.8. ESC120 Installing and Setting up Java and Eclipse Computer Science Installing and Setting up Java and Eclipse to Create Java Applications Note: Make sure you go to the following sites ONLY listed in here or class webpage. Part1: Java 11. Download JDK8U60 to Install Java Make sure the sites you are downloading for JDK is from Oracle site. Use png with transparent icon in the about dialog of Java EPP (and others if applicable) NEW: 530698: Using weka api: NEW: 526611: win64 version missing: NEW: 498457: FileNotFoundException: org.eclipse.ui3.108.0.v201.jar: NEW: 489296: Improve out-of-box experience for non-english locales: NEW: 386806: New Eclipse Icon not used.
2- Use JDK instead of JRE
Eclipse Java Jdk Configuration
- Written by Nam Ha Minh
- Last Updated on 04 October 2019 Print Email
1. Find the JDK / JRE that runs EclipseIn Eclipse, click menu Help > About Eclipse IDE. Then in the About Eclipse IDE dialog, click the Installation Details
Eclipse Java Jdk Downloadbutton. Then in the next screen, click Configuration tab. Wait for a moment while Eclipse is retrieving configuration information, and you will see a screen as below:Find the line that starts with –vm and the value in the next line shows the exact path of JDK/JRE on which Eclipse is running. In the above screenshot, you see Eclipse is running on OpenJDK 11.0.2.
You know, Eclipse IDE is written in Java so it needs a JDK/JRE installed to run. By default, the first instance of JDK/JRE found in the PATHenvironment variable is used to run Eclipse. Consider a typical value of the PATHenvironment variable like this:In this case, the Java Virtual Machine found in the JAVA_HOME path will run Eclipse IDE. So changing the Java version that run Eclipse is just a matter of updating the value of the JAVA_HOME variable.However, sometimes it doesn’t work like that. You changed JAVA_HOME points to a newer JDK/JRE, but Eclipse still runs under the old one. Why? What happens?There are two reasons:
2. How to Change JDK / JRE for Eclipse
- An installation of Oracle Java putting its path before your JAVA_HOME, or
- Your Eclipse IDE is configured to stick with a JDK/JRE in its configuration file.