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Does anyone know where I can find the actual implementation of binarySearch in java.util.Collections? Specifically the following: 

binarySearch(List<? extends T> list, T object, Comparator<? super T> comparator)
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  • You can usually search for the file source on grepcode.com Commented Dec 4, 2013 at 21:06
  • If you use eclipse, just put the cursor at a call to the method, and press F3. Commented Dec 4, 2013 at 21:45

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Each JDK installation comes with a src.zip file containing the public source code. The .java file for java.util.Collections is part of that.

Alternatively, you can see source at grepcode.com by doing a simple search for java.

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