I believe this write-up can answer your queries. SAP Gateway Developer Tools – Bridging the Past, Present and Future
SAP has officially ended the support of Eclipse Juno in the end of June 2014. As SAP generally tries to support the current and the previous versions of Eclipse, we will soon remove references tohttps://tools.hana.ondemand.com/juno from the index pages. Only the tools which support Eclipse Kepler and Luna will be listed on “SAP Development Tools for Eclipse” update site.
Are you not able to install GWPA components in eclipse junos?
Rgrds,
JK