Summary : Developers when running the NWDS for the first time may get an error – ”A Java Runtime Environment (JRE) or Java Development Kit (JDK) must be available in order to run SapNetweaverDeveloperStudio. Applies to: Created while working with SAP NWDS7.3 SP09 PAT00 but the document is relevant for other Versions, SP and Patch levels.