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I installed an older version of JRE all my projects start to give compiler errors . (There is a cross and (Unbound) message onBuild Path for project) When I checked, they still see the uninstalled JRE in path. I did some of them and changed one by one but isn't there a quick way to add new JRE to all my current projects at one time? I have almost 80 projects and to make them one by one is time consuming.
Thanks
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Setup Default JRE as JDKOn the first page of popup wizard, select "Standard VM", then click Next. Select JDK's path then press OK. On next page, verify the the JRE name and it's System libraries are recognized properly by Eclipse itself, then click Finish. Check the just created JRE entry on the list, then press OK.
Launch Eclipse and follow these steps: Select Window > Preferences. The Preferences Window opens. In the Preferences window, go to the left panel, expand the Java item, and select Installed JREs.
Your projects are likely referring to their JRE using its name in the preferences. Go into your Installed JRE preference page and just make sure the new correct JRE that's actually there has the same "name" as the old one that's been uninstalled. In the future, set your projects' JREs using the Execution Environment (Edit that entry from the Libraries tab).
To fix all of your projects quickly, open the project .classpath files for a fixed project and the broken one, and use the Search menu to kick off a massive find/replace through all of your .classpath files.
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Right click on any projects->properties->java Build path->
1)mark the JRE version in order and support
2)Add JRE system library in libraries.
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