By "valid" do you mean a handle that resolves? You can use the Java client library to resolve the handle, or use hdl.handle.net, for example by checking https://hdl.handle.net/api/handles/your-handle. For the example you gave, you could use https://hdl.handle.net/api/handles/10.198.283.19/ .Note that 10.198.283.19/ could in principle be a valid, resolvable handle, though it would be a very unusual one.
Also note that many handles do not start with 10. You are probably thinking of DOIs, which use handle technology but are only a subset of handles.
Robert
Dear Sir/Madam, Is there a way to programmatically determine if a string is a valid handle? I’m thinking of a library or API. I’ve checked out the Java client library at (http://www.handle.net/client_download.html) but didn’t find anything useful. Currently, my code checks whether a string starts with “10.” and contains a “/” but what if another string has these characteristics but is not a handle, like “10.198.283.19/”? At our organization we filter out handles from many different strings. Groet/kind regards, Jing Ma Software Engineer
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