Writing a Java client for browsing and download data from THREDDS

Hello,

I am trying to write a java client which can browse THREDDS catalog and 
finally download data. The target data is NEXRAD Level II and I'd like 
to use OPeNDAP for subsetting the dataset.

Could you please let me know the tutorial/example? I cannot find any 
documentation about THREDDS Java Client Libraries.

Thank you.

Taezoon Park

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