CS506-Midterm
1 / 50
In Java an abstract class cannot be sub-classed
2 / 50
Static methods only access ___
3 / 50
A top level class may have only the following access modifier.
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If we remove static from main then program __________
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Which of the following package needs to be import while handling files?
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BorderLayout is the default layout manager for a JFrame content pane
7 / 50
JavaBeans are?
8 / 50
Which of the following feature provide facility for multiple inheritances:-
9 / 50
Socket is a --------------communication channel between hosts.
10 / 50
The relationship between class and interface is called ________
11 / 50
Overloading is _______ whereas overriding is _____
12 / 50
Which of the following methods are invoked by the AWT to support paint and repaint operations?
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14 / 50
In Java, which of these classes implement the LayoutManager interface?
15 / 50
Java program code is compiled into form called
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Window Listener interface contains _______ methods.
17 / 50
Mouse events can be trapped for ________ GUI component.
18 / 50
A collection can store..........
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Which of the following are passed as an argument to the paint () method:
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If a super class method is protected then overriding method _________
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A top level class without any modifier is accessible to
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Exceptions must be handled while handling files otherwise it may lead to _____
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Java developed in __________
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CREATE, ALTER, DROP are _________ SQL statements.
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Which of these are valid declarations for the main method?
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What if the main method is declared as private?
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Aside from the Scanner class, which of the following classes can be used for text-file file input?
28 / 50
Which of the following exception belongs to a category of un-checked exception?
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30 / 50
Which of following can be thrown using the throw statement?
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Which of the following stream is a filter stream?
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Which of the following statement object is used to execute stored procedures?
33 / 50
Which of the following syntax is used to attach an input stream to console?
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A serializable class must implement the method(s) _________.
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A serializable class must implement the method(s)............
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All the exceptions and errors in java are inherited from _____ class.
37 / 50
An abstract class --------------- instantiated.
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Which of the following is used for inheritance in java?
39 / 50
In Java a final class must be sub-classed before it.
40 / 50
Based on functionality, the streams can be categorized as________
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A ___________ defines the way and method of communication between two parties.
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A final class can't be extended.
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Event source can have --------- listeners registered on it.
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Which of the following are passed as an argument to the paint ( ) method?
45 / 50
You can ---------to a network using sockets.
46 / 50
JPanel and Applet use ________ as their default layout.
47 / 50
Which of the following method is used to execute INSERT, UPDATE and Delete SQL statements?
48 / 50
HahMap takes key as a/an _________
49 / 50
DSN stands for _________
50 / 50
Which of the following is called ' pure abstract class ' ?
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