Warning - Build path specifies execution environment J2SE-1.4

java eclipse maven-2
narsereg picture narsereg · Jun 29, 2010 · Viewed 202k times · Source

I create a Maven project in Eclipse Helios. It works fine for a day, but then this warning shows up:

Build path specifies execution environment J2SE-1.4. There are no JREs installed in the workspace that are strictly compatible with this environment.

Since this message, the project stopped compiling and debugging. Does anyone have solution for this problem?

Answer

btpka3 picture btpka3 · Feb 27, 2011

In Eclipse from your project:

  1. Right-click on your project
  2. Click Properties
  3. Java build path: Libraries; Remove the "JRE System Library[J2SE 1.4]"
  4. Click Add Library -> JRE System Library
  5. Select the new "Execution Environment" or Workspace default JRE

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