RPC java client generator

Hello
I am newbie to the Tezos community.
I was wondering to generate a java RPC client by query the alphanode: but which function do I have to call?

I was able to install tezos alphanet, to expose the RPC port through

alphanet.sh start --rpc-port 127.0.0.1:8732

The rcp is operationnal

wget -O - http://localhost:8732/describe/chains/main/blocks/genesis/hash
–2019-06-04 15:03:00-- http://localhost:8732/describe/chains/main/blocks/genesis/hash
Resolving localhost (localhost)… 127.0.0.1
Connecting to localhost (localhost)|127.0.0.1|:8732… connected.
HTTP request sent, awaiting response… 200 OK
Length: 1292 (1,3K) [application/json]
Saving to: ‘STDOUT’

  •                                                                  0%[                                                                                                                                                                      ]       0  --.-KB/s               {"static":{"get_service":{"meth":"GET","path":["hash"],"description":"The block's hash, its unique identifier.","query":[],"output":{"json_schema":{"$schema":"http://json-schema.org/draft-04/schema#","$ref":"#/definitions/block_hash","definitions":{"block_hash":{"title":"A block identifier (Base58Check-encoded)","$ref":"#/definitions/unistring"},"unistring":{"title":"Universal string representation","description":"Either a plain UTF8 string, or a sequence of bytes for strings that contain invalid byte sequences.","oneOf":[{"type":"string"},{"type":"object","properties":{"invalid_utf8_string":{"type":"array","items":{"type":"integer","minimum":0,"maximum":255}}},"required":["invalid_utf8_string"],"additionalProperties":false}]}}},"binary_schema":{"toplevel":{"fields":[{"name":"block_hash","layout":{"kind":"Bytes"},"data_kind":{"size":32,"kind":"Float"},"kind":"named"}]},"fields":[]}},"error":{"json_schema":{"$schema":"http://json-schema.org/draft-04/schema#","$ref":"#/definitions/error","definitions":{"error":{"description":"The full list of error is available with the global RPC `GET errors`"}}},"binary_schema":{"toplevel":{"fields":[{"kind":"dyn","num_fields":1,"size":"Uint30"},{"layout":{"kind":"String"},"kind":"anon","data_kind":{"kind":"Variable"}}]},"fields":[]}}}}}
    
  •                                                                100%[=====================================================================================================================================================================>]   1,26K  --.-KB/s    in 0s      
    

2019-06-04 15:03:00 (432 MB/s) - written to stdout [1292/1292]

My question is : is there an url that give the json descriptors of the RPC methods ?

I would appreciate your comments.