Technical Interview Questions

BASICS

 What kind of variables a class can consist of?
 What do you mean by Object?
 What is a Local Variable?
 What is a Instance Variable?
 What is a Class Variable?
 What is Singleton class?
 What is a static variable?
  What are different types of inner classes ?
 What are wrapper classes ?
 what happens an object is created in Java?
 What are the methods of Object Class ?
 What is a Final Class ?
 What is an immutable class ?
 Difference between nested and inner classes ?
 Which class is the superclass of all classes?
 Explain Static nested Classes ?
 Explain about anonymous inner classes ?
 Different ways of object creation in Java?
 Relate object created in class to the real world.
 Which class is the superclass of all classes?
 Can I declare a data type inside loop in java?
 Does Java support operator overloading?
 What are two different ways to call garbage collector?
 Can we mark constructors final?
 What is javac ?
 What is final modifier?
 What are Access Specifiers?
 When a byte datatype is used?
 What is the default value of byte datatype in Java?
 What do you mean by Object?
 List two Java IDE's?
 Why Java is considered dynamic?
 How Java enabled High Performance?
 List any five features of Java?
 What is the purpose of garbage collection in Java, and when is it used?
 What is the difference between a constructor and a method?
 Can we execute a program without main() method?
 Which class is the superclass for every class.
 What is static method?
 What is static variable?
 Can we inherit constructor?
 What is the purpose of default constructor?
 What is constructor?
 What is platform independent?
 What is object cloning?
 What is this in java?
 Why main method is static?
 Can you use this() and super() both in a constructor?
 What is super in java?
 What is composition?
  What is static block?
 What is difference between object oriented programming language and object based programming language?
 Why Java does not support pointers?
 What if we write static public void instead of public static void?
 Is Empty .java file name a valid source file name?
 What is difference between JDK,JRE and JVM?
 How many types of memory areas are allocated by JVM?
 What is classloader?
 What is WORA stands for in java??
 What is JIT compiler?
 JVM is an interpreter or compiler?
 Is final method inherited?
 Is final method inherited?
 Is final method inherited?

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