1. Which non-Unicode letter characters may be used as the first character of an identifier? - The non-Unicode letter characters $ and _ may appear as the first character of an identifier
  2. What restrictions are placed on method overloading? - Two methods may not have the same name and argument list but different return types.
  3. What is casting? - There are two types of casting, casting between primitive numeric types and casting between object references. Casting between numeric types is used to convert larger values, such as double values, to smaller values, such as byte values. Casting between object references is used to refer to an object by a compatible class, interface, or array type reference.
  4. What is the return type of a programís main() method? - A programís main() method has a void return type.
  5. What class of exceptions are generated by the Java run-time system? - The Java runtime system generates RuntimeException and Error exceptions.

See Java Interview Questions and Answers : Part 4 for more Java/J2EE Interview Questions.


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Sandeep Joshi
Mathematics, Technology and Programming are my passion. I am a part of Java Ecosystem and through this blog, I contribute to it. I am here to blog about my interests, views and experiences.
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I feel proud to be listed as a "National Memory Record Holder" in the Limca Book of Records, 2009 and have attempted for an International Memory record in the Guiness Book of Records. I can remember the value of PI upto 10,000 digits after the decimal (3.1415.....). You can contact me on javagenious.com(At)gmal.com ; I would like to hear from you :)