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Many people think that operator overloading reduces the comprehensibility of code. Perhaps for this reason, the designers of Java decided against allowing operators to be re-defined. (Even so, Java natively overloads the "+" operator for java.lang.String to concatenate rather than perform a mathematical operation.)
Diagonal Difference
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Yes, C++ allows classes to redefine the basic operators for their own purposes. This feature is usually referred to as "operator overloading": https://isocpp.org/wiki/faq/operator-overloading#op-ov-benefits
So, the handling of ">>" when used with the istream class is customized for each possible argument type: http://www.cplusplus.com/reference/istream/basic_istream/operator%3E%3E/
Many people think that operator overloading reduces the comprehensibility of code. Perhaps for this reason, the designers of Java decided against allowing operators to be re-defined. (Even so, Java natively overloads the "+" operator for java.lang.String to concatenate rather than perform a mathematical operation.)
sorry but i did not understand this properly. Can you explain it clearly please? Thank you in advance.