Java questionnaire

If you are hunting for career in Java, do check the relevant collections of the questionnaire asked by the interviewers more frequently. 

Here is a good link to a pool of frequently asked (Core java) interview questions. 

http:/www.roseindia.net/interviewquestions/corejava.shtml

Or If you want to go for the relevant core java questions then just browse:

•  Page 1
  How could Java classes direct program messages to the system console, but error messages, say to a file?
      
• Page 2
  Does it matter in what order catch statements for FileNotFoundException and IOExceptipon are written?
   
•  Page 3
  When you declare a method as abstract method ?
   
• Page 4
  What is the difference between checked and Unchecked Exceptions in Java ?
   
• Page 5
  What are different types of inner classes ?
    
• Page 6
  How can i tell what state a thread is in ? 
    
• Page 7
  What is serialization ?
    
• Page 8
  What are the static fields & static Methods ? 
   
• Page 9
  What are the uses of Serialization? 
    
• Page 10
  What is the difference between notify and notify All methods ? 
   
• Page 11
  What is serialization ? 
    
• Page 12
  What is a transient variable?
   
• Page 13
  What is an Iterator interface?
   
• Page 14
  What is clipping?
   
• Page 15
  What invokes a thread's run() method?
    
• Page 16
  Which containers may have a MenuBar?
   
• Page 17
  What is the difference between a Window and a Frame?
    
• Page 18
  Is &&= a valid Java operator?
    
• Page 19
  What is the difference between static and non-static variables?
    
• Page 20
  Name four Container classes.
    
• Page 21
  How are the elements of a GridLayout organized?
    
• Page 22
  What is a compilation unit?
   
• Page 23
  To what value is a variable of the boolean type automatically initialized?
   
• Page 24
  Why do we need public static void main(String args[]) method in Java?
    
• Page 25
  What are null or Marker interfaces in Java?
    
• Page 26
  How many number of non-public class definitions can a source file have A source file can contain unlimited number of non-public class definitions List primitive data types, there size and there range (min, max).
    
• Page 27
  What are access modifiers?
    
• Page 28
  What are wrapped classes?
    
• Page 29
  What is the difference between while and do while loop?
    
• Page 30
  What's the difference between constructors and other methods?
    
• Page 31
  Where does java thread support reside?
   
• Page 32
  What is the ultimate ancestor of all java classes?