What is a null point?
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why string constant pool in java
What is the difference between an interface and an abstract class?
What are the performance implications of interfaces over abstract classes?
What is array length?
33. try { 34. // some code here 35. } catch (NullPointerException e1) { 36. System.out.print(”a”); 37. } catch (RuntimeException e2) { 38. System.out.print(”b”); 39. } finally { 40. System.out.print(”c”); 41. } What is the result if a NullPointerException occurs on line 34? 1 c 2 a 3 ab 4 ac
When abstract methods are used?
Differences between C and Java?
why are wait(), notify() and notifyall() methods defined in the object class? : Java thread
What is the major advantage of external iteration over internal iteration?
Which method is used to find that the object is exited or not?
why the equals method can be override?when we override the equals method?
What is the difference between declaration and definition in java?