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Oracle has released JDK 17 in September, 2021 and itโs general availability date is 2021/09/14. Java Development Kit (JDK) 17 will be a long-term-support (LTS) release, with extended support from Oracle expected for several years. Every Java Professional should be curious to know what is new in Java 17. But, how will we test the new features of Java 17 practically in the early days? However, we have a good news for Eclipse users. In this article, we will learn โHow to add JDK 17 support in Eclipse 2021-09?โ Thanks to Eclipse community as they provide solution for developers before every new release of JDK version.
In this article, we will learn two ways of configuring JDK 17 in our eclipse. Each way will have step by step instructions to do it easily. Letโs start our topic โHow to add JDK 17 support in Eclipse 2021-09 ?โ.
Pre-requisite
Before knowing โHow to add JDK 17 support in Eclipse 2021-09 ?โ, we need to be sure that the following software are installed in our system.
โฆ JDK 17 (you can download it from here)
โฆ Eclipse 2021-09 : Eclipse IDE for Enterprise Java and Web Developersย (You can download it from hereย as per your operating system)
Where can we download Java JDK latest version from?
There is an official website to download latest version of JDK. Even we can get the early access of future versions as well from there. Since we are discussing about JDK 17 in this article, we need to download JDK 17 here. The direct link to download JDK 17 is https://jdk.java.net/17/.
How to install Java/JDK 17 ?
In order to install JDK 17, you need to download the zip file by clicking the link on Java 17 download page according to your operating system. However, you can visit the oracle site and search for the latest build of JDK 17 to get it installed. Then, you need to unzip the zip file and paste the โjdk-17โ folder in the directory where other jdk versions exist. However, in my case, it is โC:\Program Files\Javaโ which is the native place of jdk installation.
How to install Eclipse ?
Eclipse community has already suggested that we need to have a specific version of Eclipse installed in our system in order to get the support of JDK 17. The specific version is Eclipse 2021-09. You can directly click on the link to download Eclipse to get it. Once you click on the link you will be on the Eclipse download page, then you have to click on the download link appearing on the page.
Steps: How to add JDK 17 support in Eclipse 2021-09 ? (eclipse jdk 17|eclipse java 17)
In order to add JDK 17 support in your eclipse, follow the below steps carefully. However, we are providing two ways to get it done. We also have included step by step images to have a clear understanding of the process.
Method-1: Using Eclipse Marketplace
However, Eclipse 2021-09 comes with Eclipse Marketplace. If you donโt find Marketplace in any particular version, then you can refer our article โHow to install marketplace in Eclipseโ. Letโs follow below steps for the first method โUsing Eclipse Marketplaceโ.
1) Make sure you already installed JDK 17 and Eclipse 2021-09 on your system. If not, kindly visit above section.
2) Open your eclipse, click on Help-> Eclipse Marketplace
3) In the search bar type โJava 17โ and hit enter.
4) You will find one item โJava 17 Support for Eclipse 2021-09 (4.21)
5) Now click on โInstallโ button
6) Next, you will see the next window with heading โConfirm Selected Featuresโ. You have to click on โConfirmโ button here. Let the checkboxes be selected as it is.
7) Now, a popup window with the message โRestart Eclipse IDE to apply the software updateโ will appear. Here, you have to click on โRestart nowโ button.
8) Then, you need to create one Test Project to check the JDK 17 support.
9) Now, click on Project -> Properties. Then select โProject Facetsโ from the left.
10) Click on โJavaโ checkbox and then select โ17โ from the dropdown and then click on โApply and Closeโ button.
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Method-2: Using Install New Software
Letโs follow below steps for the second method โUsing Install New Softwareโ.
1) Make sure you already installed JDK 17 and Eclipse 2021-09 on your system. If not, kindly visit a section given above for the guidelines in this article.
2) Open your eclipse, click on Help-> Install New Software
3) In the first field(Work with) paste the below URL and hit Enter.
https://download.eclipse.org/eclipse/updates/4.21-P-builds/
4) Multiple values with checkboxes will appear. You have to select โEclipse Java 17 support for 2021-09 development streamโ and then click on โNextโ button and follow the instructions on the screen.
5) At the end, restart the eclipse.
6) Then you need to create one Test Project to check the JDK 17 support.
7) Now click on Project -> Properties. Then select โProject Facetsโ from the left.
8) Click on โJavaโ checkbox and then select โ17โ from the drop-down and then click on โApply and Closeโ button.
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How to Verify that Eclipse has Java 17 Support
1) Click on Project -> Properties. Then select โJava Compilerโ from the left.
2) Uncheck the second checkbox (Use Compliance from execution environment)
3) Now click on the drop down there on the right side. You will see an additional entry for JDK 17 which is โ17 (BETA)โ
4) Select โ17 (BETA)โ and click on โApply and closeโ.
โฅ Finally, you are ready to develop a project in Eclipse using Java 17.
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How to test JDK 17 features in Eclipse?
1) Create a new Java Test Project in Eclipse.
2) Right click on the project and navigate to Build Path -> Configure Build Path
3) Then, click on libraries
4) Now, add libraries from the right
5) Set the installation path for JDK 17
6) Finally, enjoy the testing of JDK 17 features.
Thatโs all about configuring & testing eclipse java 17| eclipse jdk 17 | eclipse java 17 support environment in your system.
Eclipse not recognising Java-17
If your eclipse is unable to recognize the Java 17 version, you need to follow above steps of this article.
โฆ If you are working on Java 18, here is the link to explore โHow to enable JDK 18 support in Eclipse?โ.
โฅย Here is the link to get to know โHow to enable JDK 16 support in Eclipse?โ
โฅ And here is the link to get to know โHow to enable JDK 15 support in Eclipse?โ
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Well Explained Guide!
guide us how to get rid of Exception in thread โmainโ java.lang.UnsupportedClassVersionError: org/springframework/boot/SpringApplication has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0
this type of errorย kindly write a blog on this
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@amit: Kindly go through https://javatechonline.com/java-interview-questions-java/#Have_you_ever_faced_%E2%80%9CjavalangUnsupportedClassVersionError%E2%80%9D_while_running_your_java_application