Is multiple inheritance allowed in Java? Why ?
- 7 Answers
- 10712 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / midhun h kumar
No ...
Multiple inheritance is not allowed in Java...
but infact we can achieve the functionality using interfaces...
we can define interfaces and any class can implement these
interfaces..
a class can implement any number of interfaces but can
extend only one class..
thus we can achieve what we expect to get from multiple
inheritance thru interfaces...
| Is This Answer Correct ? | 10 Yes | 2 No |
Multiple inheritance is not allowed in java because it creates
DIAMOND PROBLEM.
DIAMOND PROBLEM: Suppose classes B and C extend A and
class D extends to both B and C(multiple inheritance). Now,
if D calls a method in A then it does not know from which
class it has to inherit(either B or C). This is called
diamond problem.
| Is This Answer Correct ? | 8 Yes | 1 No |
Answer / bhasker tiwari
All the answer given above are True .
but i would like to add few more.
Reasons are follows:
1.As java creates .class for each Java file.and As all java
files has there own variable and methods so incase of
Multiple inheritence all will mess up , so to avoid this
situation Java do not allow Multiple Inheritence.
2. the above discussed Diamond problem is also a Reason.
| Is This Answer Correct ? | 4 Yes | 2 No |
Answer / ravikiran(aptech mumbai)
Not in a direct manner we can achieve it with the help of
interfaces
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / karthik
"Can some one explain about this case.
-> A is a super class and B extends from A.
-> java.lang.Object is super class for all classes.
now in this case B extends from A and B extend from java.lang.Object(because is default super class) then it is multiple inheritence right? "
Mr Suresh Aelidhe,
If a class extends any other class then it wont extends Object class
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / suresh aelidhe
Can some one explain about this case.
-> A is a super class and B extends from A.
-> java.lang.Object is super class for all classes.
now in this case B extends from A and B extend from java.lang.Object(because is default super class) then it is multiple inheritence right?
| Is This Answer Correct ? | 1 Yes | 1 No |
What is fail fast in java?
why would you use a synchronized block vs. Synchronized method? : Java thread
Why Over riding is Run Time Polymorphism?
what is the difference between sleep() and Wait()?
What language is java written?
I have a String s = java; What is the output when I say s.replaceAll('j', 'k'); Also what is the value of s after replacing?
Write a method that will remove given character from the string?
Can we pass null as argument in java?
How do you remove duplicates from an array in java?
What is the formula to calculate percentage?
what are the boundaries of jdk and jre?
Is integer passed by reference in java?
Core Java 
