Help required on some interview questions!!
amit bose
Greenhorn
Posts: 25
posted 10 years ago
Hi All,
Recently I was asked the following questions for an interview.
I would appreciate if the guru's here help me out with the answers:
1) What's the difference b/w
String s="abc";
//and
String s= new String("abc");
2) What are the implicit variables in a JSP ( that are readily available for use)
3) What is the difference between Container and Server?
4) Sometimes we do have to declare a class abstract when there aren't any abstract methods in it, Why?
Any particular scenario of importance ?
5) Why do abstract class have constructors when we cannot instantiate them?
6) How can we sort an arraylist using comparator?
Code snippet will really help.
Best Regards,
Amit
Recently I was asked the following questions for an interview.
I would appreciate if the guru's here help me out with the answers:
1) What's the difference b/w
String s="abc";
//and
String s= new String("abc");
2) What are the implicit variables in a JSP ( that are readily available for use)
3) What is the difference between Container and Server?
4) Sometimes we do have to declare a class abstract when there aren't any abstract methods in it, Why?
Any particular scenario of importance ?
5) Why do abstract class have constructors when we cannot instantiate them?
6) How can we sort an arraylist using comparator?
Code snippet will really help.
Best Regards,
Amit
posted 10 years ago
None of these are performance questions; I'll move this topic to Java in General (Beginner), although personally, I'd prefer to see these asked one at a time, and I'd want to see you post your answers, so other people could critique them.
