Working pairings of OS, JDK and Eclipse Android SDK:
32-bit OS - 32-bit JDK - 32-bit Eclipse -32 bit android sdk (32-bit only)
64-bit OS - 32-bit JDK - 32-bit Eclipse -32 bit android sdk
64-bit OS - 64-bit JDK - 64bit Eclipse - 64 bit android sdk(64-bit only)