Cocoa is the descendant of NeXTStep and has a rich design history reaching back to 1987. Cocoa is implemented in Objective-C, an ANSI C compatible language with dynamic object-oriented extensions modeled on Smalltalk. It has been tailored for efficient development and runtime performance. Cocoa applications can make use of core functionality contained in traditional C and C++ libraries brought forward from legacy application environments. It also provides Java interfaces to permit a high performance, full featured Java development environment tailored to Mac OS X specifically.
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