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Java Interview Questions and Answers

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Questions Question: What is the difference between runtime polimorphism, and compiletime polimorphism ?
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Questions Question: What exactly is volatile & please tell the at what situation we use this key-word and please give an example as well ?
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Questions Question: What is the difference between main() and Main()?
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Questions Question: whats the difference in data types of java and c++? 2)what is the use of finally block?? 3)what is encapsulation in oops?how is it achieved in Java?
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Questions Question: In overriding, in super class we declared a method as protected & in sub class we declared that method as private. what happens?
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Questions Question: In overriding, the super class method throws I/O exception & in sub class that method throws arithmetic exception. what happens?
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Questions Question: How can we store elements in arraylist? as by using index or by node?
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Questions Question: Which is superclass of Exception?many people think that object,no there is particular class which is superclass of all exception it starts with letter B,plz tell me
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Questions Question: What happen if we write many curly braces in main method and write println method inside it .program will compile or not?
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Questions Question: How to track "memory leak" and how to prevent it in java?
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Questions Question: What is serialization?What is transient?What is the default value of a transient variable?
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Questions Question: can we write return statement in try catch or finally block. suposse we write return 0 in try catch or finally. can we do.
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Questions Question: what is assert function what are the type how they are used with an example
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Questions Question: I want to know output of this program and the flow also public class Aquestion { private int i = giveMeJ(); private int j = 10; private int giveMeJ() { return j; } public static void main(String args[]) { System.out.println((new Aquestion()).i); } }
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Questions Question: Scope Variables
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Questions Question: Can You catch the Error? 2. Difference between compiletime exception and runtime exception? 3. How you throw user defined exception? 4. How you handle throwable while using exceptions ? 5. What are the methods available in Object ? 6. Is there any methods available in serialization ? 7. How you seralize an Object ? 8.How you get the serialized object ? 9. Any methods available in deseralization ?
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Questions Question: i want to know the difference between these two programs mean the flow /*public class Aquestion { private int i = giveMeJ(); private int j = 10; private int giveMeJ() { return j; } public static void main(String args[]) { System.out.println((new Aquestion()).i); } } */ public class Aquestion { private int j = 10; private int i = giveMeJ(); private int giveMeJ() { return j; } public static void main(String args[]) { System.out.println((new Aquestion()).i); } }
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Questions Question: How we can implement the constructer nesting in java
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Questions Question: Why single inheritance cannot be use in java/why we alwayz use multiple inheritances?
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Questions Question: What is the order of intialization of variables in Java.
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Latest 10 Answers
When there is any situation that u should attach a new patch to ur kernel , then download the patch and install it,to make changes to kernel , go to ok prompt and type boot -r, it will update or reconfigure the kernel
Honesty, helpful and reliable
procedure is a set of sql statement ,are combined to gether to perform a specific task or to solve a specifi problem.it does not return value.
leadership is power to influence a group so that the members willingly exert efforts as aspired by the leader.
I have the unique combination of technical skill and the ability to build strong customer relationship. I have the ability to stay focussed in stressfull situation. I would be great addition to your team.
first execute the bc search spec to fetch the data then executes the applet search spec if applet search spec is not match with bc it skips
TCP-Transmission Control Protocol. TCP is Reliable. TCP is Connection oriented. UDP-User Datagram Protoco UDP is Unreliable. UDP is Connectionless.
By default in structure all data member and member function are public,i,e if you not mentation any access specifier. But in case of class By default all data member and member function are private.
Structure is a user defined data type. By default all structure variables are public type and we cann't use access specifier in structure type variable, where as in class we can define objects(variables) under required access specifier type.
variable cost is the cost which is not fixed in nature

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