Amazon Interview Question Software Engineer / Developers
0of 0 votesWhat do you know about Java generics
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What do you know about Java generics
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Java genericc feature has been introduced from Java 5 version onwards.It's simply type safety mechanism. if we have generic collection at the time of storing objects,then compiler will always check about the type of object.Similarly at the time fetching objects from generic collection there is no requirement of type casting.For eg. if we have List<EmployeeDTO> lst=new ArrayList<EmployeeDTO>(); in that case compiler will have check, only EmployeeDTO objects are permissible, at the time storing values in lst.
- Amit November 15, 2009Similarly while fetching no need to require typecasting.