To set path of JDK for your project in eclipse follow below steps:

• Right click on your project -> select properties.
• Click in Library tab
• To remove or update JRE/JDK remove existing from list as below.

See Also: Setup Java/JDK and Eclipse On Window & Linux

 

• Click on add Library and select option as “JRE System Library” and click on Next button.

 

 

• If you need to use existing JRE/JDK you can select from installed JRE or if need to add new one click on Add button.
• You will get popup of JRE definition. click on Directory option and select JAVA (JRE/JDK) version home directory as in below screen shot
• Click on Finish button.

 

 

• Select one Installed JRE which want to use on your project.
• Click on “Apply and Close” button.

 

 

• Finally selected JRE/JDK added to your project.
• Click on “Apply and Close” button.