Help Eclipse "build Failed"

[mylifebelike]

 

Hello when i try to "run" build.xml so i can make the l2j server i got this error can some1 help me?

 

[TehNeRD]

you need to add the java path in to your computer variables

 

And also to set your java path in to your eclipse preferences at installed JREs

[Rootware]

Not JRE, only JDK. JRE enough for running server.

[SweeTs]

Select Window > Preferences and this window pops up

 

 

 

press add and select JDK, tick it and ok.