Basic Java Interview Question and Answers

5. Why Java does not support multiple inheritances?
  Java design team stroke to make Java as
  • Simple, object oriented and familiar
  • Robust and secure
  • Architecture neutral and portable
  • High performance
  • Interpreted, threaded and dynamic
  • The reasons for omitting Multiple Inheritance from the Java Language mostly stem from the simple, object oriented and familiar goal.
 
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6. How many types of inheritances does Java support?
  Yes, Ok but, basically there are two types of Inheritances are there, they are
  • Single Inheritance
  • Multiple Inheritances
And some other Inheritances are there those are
  • Multi level
  • Hierarchical
  • Hybrid and
  • Java supports only Single Inheritance only.
 
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7. Why java does not support pointers?
  Because pointers are unsafe, Java uses reference types to hide pointer and programmers feel easier to deal with reference types without pointers.
 
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8. What is a platform?
 
  • A platform is the hardware or software environment in which a program runs.
  • Most platforms can be described as a combination of the operating system and hardware, like Windows 2000/XP, Linux, Solaris and MacOs.
 
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