In the Java ecosystem, as the modern releases of JDK are introduced at least once a year, we ‘ll credibly need to switch to a newer version at some point .
In this promptly tutorial, we ‘ll show how to check the available JREs, add a JRE to Eclipse, and change a Java translation in an Eclipse plan, so we ‘ll be quick when that meter comes.
2. Check Whether the JRE Is Available in Eclipse
After being sure that we have installed the version that we want to use, we ‘ll need to ensure that it ‘s available to use in Eclipse .
Let ‘s take a spirit at Window – > Preferences, and within that, Java – > Installed JREs :
If the JRE we want is listed, then we ‘re well to go. But, suppose we need to use JRE 9, 10, or 11. Since we only have JDK 8 installed, we ‘ll have to add it to Eclipse .
3. Adding a JRE to Eclipse
future, from the Window – > Preferences dialogue, let ‘s click the Add… button. From hera, we need to specify the JRE type. We ‘ll choose Standard VM :
And last, let ‘s specify the localization of the new JRE ( under the JRE home ) and click coating :
As a result, we now have two JREs configured in our IDE :
4. Change the Java Version of Our Project
now, let ‘s suppose that we were using Java 8 in our project and immediately we want to change it to Java 10 :
first, we ‘ll navigate to the project properties and then to the Java Build Path :
and hit the Remove button on the existing JRE :
now, we ‘ll use the Add Library button and choose the JRE System Library :
Let’s choose JavaSE-10 from the JDK that we recently installed and click the Finish button :
now, as we can see, we ‘ve correctly configured our project ‘s Java Build Path :
We need to do one extra step — make sure we’re using the correct Compiler Compliance Level for the Java Compiler :
In our character it says Java 10, so we ‘re all adept :
In character the Compiler Compliance Level is not the discipline one, we can merely uncheck the Use submission from execution environment option and choose the adjust one .
In this quick article, we learned how to add a new JRE into our Eclipse workspace and how to switch to a different Java translation in our current Eclipse stick out.
Get started with Spring 5 and Spring Boot 2, through the Learn Spring course:
>> CHECK OUT THE COURSE
Generic pedestrian banner