Why set do not allow duplicates in java?
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What is the difference between heap and stack memory?
How many bytes is 255 characters?
How concurrent hashmap works?
What is return used for in java?
What is the difference between final, finally and finalize() in java?
What are the characteristics of java?
What is the use of bin and lib in JDK?
What is meant by attribute?
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
What is a super class and how super class be called?
Explain the concept of hashtables?
What class allows you to read objects directly from a stream?