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Java omits several rarely used, poorly understood and confusing features of C++ including operator overloading, multiple inheritance, pointers and automatic type coercions.
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It adds automatic garbage collection which makes dynamic programming easier in Java than in C or C++.
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It also adds 'Interface' construct, similar to Objective C concept, which often compensates for the lack of multiple inheritance by allowing method calling syntax to be "inherited".
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The resulting language is familiar as it looks like C++ but is simpler and hence easier to program in.
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Simplicity makes it easier to write optimizing compilers and so produce efficient code
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It also results in a much smaller kernel which is suitable for planned Java ports to consumer electronic devices.
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