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tree map implementation

Last Modified: 2015-04-02

My eclipse produced below two TreeMap Impementation codes when i tried

TreeMap<Integer, String> ts=new TreeMap<Integer, String>(theComparator);
TreeMap<Integer, String> tm=new TreeMap<Integer, String>();

What is the difference between above two. theComparator is used for the value right?(which happened to be String here)

I need bit more clarity on above two. please advise
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