The ALM UI is not supported for 64 bit browsers. It is a 32 bit application and must be accessed with a 32 bit browser.
Regarding your question about REST and JAVA, do a search of this forum. There are several threads already about using JAVA to access the REST API.
Regarding your question about REST and JAVA, do a search of this forum. There are several threads already about using JAVA to access the REST API.