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              Instead of saving the histograms to files in binary form as 
                in Demo 1, write a program 
                that saves/retrieves the data for histograms in files with formatted 
                readable text.Modify Demo 1 such that it 
                saves/retrieves multiple histograms rather than just one in a 
                file.Create an OutputStream subclass
              that can split a stream and send it to two or more other streams.
              Use this class in a program to  send data both
              to a SteamedHistPanel and
              to a disk file.  Save/retrieve histograms using object streams.   |  |  |