CS506-Midterm
1 / 50
All the exceptions and errors in java are inherited from _____ class.
2 / 50
Socket is a --------------communication channel between hosts.
3 / 50
A top level class may have only the following access modifier.
4 / 50
Which of the following feature provide facility for multiple inheritances:-
5 / 50
CREATE, ALTER, DROP are _________ SQL statements.
6 / 50
In Java, which of these classes implement the LayoutManager interface?
7 / 50
Given a one dimensional array arr, what is the correct way of getting the number of elements in arr
8 / 50
Java developed in __________
9 / 50
An abstract class --------------- instantiated.
10 / 50
Java program code is compiled into form called
11 / 50
A collection can store..........
12 / 50
When defining a method you must include a ___________ to declare any exception that might be thrown but is not caught in the method.
13 / 50
Which of the following exception belongs to a category of un-checked exception?
14 / 50
To create DataBaseMetaData object we write following line of code
15 / 50
DSN stands for _________
16 / 50
What if the main method is declared as private?
17 / 50
A ___________ defines the way and method of communication between two parties.
18 / 50
ServletConfig defines a set of methods that a servlet uses to communicate with its servlet container.
19 / 50
HahMap takes key as a/an _________
20 / 50
Which of the following is true about abstract class?
21 / 50
JavaBeans are?
22 / 50
23 / 50
Aside from the Scanner class, which of the following classes can be used for text-file file input?
24 / 50
In Java an abstract class cannot be sub-classed
25 / 50
Static methods only access ___
26 / 50
In Java a final class must be sub-classed before it.
27 / 50
Exceptions must be handled while handling files otherwise it may lead to _____
28 / 50
Which of the following stream is a filter stream?
29 / 50
30 / 50
Which of the following is called ' pure abstract class ' ?
31 / 50
Map interface is derived from the Collection interface.
32 / 50
The collections API are defined in ______ package?
33 / 50
What if the static modifier is removed from the signature of the main method?
34 / 50
An expression tag contains a scripting language expression that is evaluated.
35 / 50
An abstract class ---------------instantiated.
36 / 50
Which of the following stream read/write data in the form of bytes?
37 / 50
Based on functionality, the streams can be categorized as________
38 / 50
A final class can't be extended.
39 / 50
The classes which contain the word _____ are byte oriented streams.
40 / 50
41 / 50
In Java garbage collection is done by_______________
42 / 50
Which of the following are passed as an argument to the paint ( ) method?
43 / 50
Window frame and dialog use ________ as their default layout.
44 / 50
Which of the following are passed as an argument to the paint () method:
45 / 50
Which of the following methods are invoked by the AWT to support paint and repaint operations?
46 / 50
The relationship between class and interface is called ________
47 / 50
48 / 50
There are _________ types of exceptions in Java
49 / 50
Which of the following is a general purpose container?
50 / 50
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