What are the limitations for static method?
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Answer / vijayakumar chinnasamy
Static Method:
a. Access only static type data (static type instance
variable).
b. Call only static method ,if non-static then compile
time error.
c.No need the class object to call the static method.
d.Cant use this and super keyword otherwise compile time
error.
| Is This Answer Correct ? | 50 Yes | 4 No |
cdan not be reffered to this or super
can only access static data
can only call other static methods
| Is This Answer Correct ? | 26 Yes | 4 No |
Answer / puneet
Static in context of java is something which is executed at
the time when the class is loaded by either bootstrap loader
or another loader into memory.These are basically for
initializations of the variables which wil be used by all
the instance variables.Say we need ot restrict how many
objects whill be created of the class store the no.of
objects created in a static variable and everytime the
object is called thestatic variable is incremented and as
soon as it reaches a limit restrict it by some logic.
The static methods can be called by the object refrence of
the class or the class name, they cannot use instance
variables or instance methods, they are the part of the
class and not instance, the static variables are stored in
registers and remain in the memory as long as the clas in
unloaded.
| Is This Answer Correct ? | 10 Yes | 10 No |
Every class extends object but why it is not possible for every object to invoke clone() method. ideally protected methods should be accessible from sub classes. isn't it?
What string is utf8?
In the first round, there are 30 aptitude and 30 java questions. We are suppose to finish both the papers within 60 minutes. I cleared this round. Next was test for programming skills. In this section, Some 7 n's were asked. 1. What is the difference b/w sleep(1000) and wait(1000) 2. what is the diff b/w static block and static function? 3. Write a program to validate IP address using string tokenizer. 4. Write a program to create singleton class 5. write a function to reverse the string 6. Write a prog to print prime nos upto n. EX: If n=9, It shld print 1,2,3,5,7 7. One program on collections- Write a program to print no. of times a number is repeating in an array. EX- {1,3,1,2,5,7,3,7,34,3,8,3} It should print: 1- 2 times 3- 4 times and so on 7. Write a func to print fibonocci series After this I had technical interview, which went on for. 60 mins or so. There were qn's about multi threading, Exception handling and collection classes. Knowledge about collections was very important for the post I was interviewed for.
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