CS506-Midterm
1 / 50
An abstract class --------------- instantiated.
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A top level class may have only the following access modifier.
3 / 50
In Java garbage collection is done by_______________
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Which of the following function will be used to register event handler with events generator (button)?
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If we remove String array from main then program____________
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Which of the following stream read/write data in the form of bytes?
7 / 50
What if the static modifier is removed from the signature of the main method?
8 / 50
____________is/are the JSP Implicit Object(s).
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You can ---------to a network using sockets.
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Which of the following method is used to execute SELECT SQL statements?
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What if the main method is declared as private?
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In Java an abstract class cannot be sub-classed
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A ___________ defines the way and method of communication between two parties.
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Event source can have --------- listeners registered on it.
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Which of the following is called ' pure abstract class ' ?
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Which of the following statements is true regarding Vectors with no specified base type?
17 / 50
Java program code is compiled into form called
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Which of the following stream is a filter stream?
19 / 50
Aside from the Scanner class, which of the following classes can be used for text-file file input?
20 / 50
Which of the following method is used to execute INSERT, UPDATE and Delete SQL statements?
21 / 50
Mouse events can be trapped for ________ GUI component.
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Which of the following is used for inheritance in java?
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Based on functionality, the streams can be categorized as________
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Window frame and dialog use ________ as their default layout.
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Which of the following is true about abstract class?
27 / 50
Given a one dimensional array arr, what is the correct way of getting the number of elements in arr
28 / 50
A final class can't be extended.
29 / 50
The relationship between class and interface is called ________
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HahMap takes key as a/an _________
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An abstract class ---------------instantiated.
32 / 50
To create DataBaseMetaData object we write following line of code
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Socket is a --------------communication channel between hosts.
34 / 50
Which of the following package needs to import while interacting with relational database?
35 / 50
CREATE, ALTER, DROP are _________ SQL statements.
36 / 50
Exceptions must be handled while handling files otherwise it may lead to____?
37 / 50
In Java a final class must be sub-classed before it.
38 / 50
There are _________ types of exceptions in Java
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40 / 50
Which of the following are passed as an argument to the paint () method:
41 / 50
Map interface is derived from the Collection interface.
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43 / 50
In Java, which of these classes implement the LayoutManager interface?
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An expression tag contains a scripting language expression that is evaluated.
45 / 50
A serializable class must implement the method(s) _________.
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If a super class method is protected then overriding method _________
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50 / 50
Which of the following statement object is used to execute stored procedures?
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