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How to update JRE in Eclipse

So I started my projects in Eclipse

with the Run Config command JRE 1.8_40

I was using , but I update it to 1.8_45

u Eclipse

to say this:

Unable to find executable file for jre1.8.0_40

Because when I installed the _45

Java version told me if I wanted to clean up the system by uninstalling old Java Versions, assuming that Eclipse was smart and knew I was updating it, but no, now I get this annoying error.

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2 answers


  • Go to Windows > Preferences

    .
  • Find Java > Installed JREs

    . (Or just type JREs

    in the search box).
  • The JRE list is displayed on the screen.
  • Click the button Add

    , find the new folder on your computer and select.
  • Remove the old JRE from the list.


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Window -> Preferences -> Java -> Installed JREs -> Add ... - Right click your project -> Build Path -> Configure Build Path -> Add Library -> JRE system library -> next -> JRE default WorkSpace



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