CS506-Midterm
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In Java a final class must be sub-classed before it.
2 / 50
A serializable class must implement the method(s) _________.
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Which of the following is true about AWT and SWING components?
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JavaBeans are?
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All the exceptions and errors in java are inherited from _____ class.
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Event source can have --------- listeners registered on it.
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Which of the following methods are invoked by the AWT to support paint and repaint operations?
8 / 50
An abstract class ---------------instantiated.
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Window frame and dialog use ________ as their default layout.
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Which of the following are passed as an argument to the paint () method:
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Which of the following statement object is used to execute stored procedures?
12 / 50
Map interface is derived from the Collection interface.
13 / 50
Aside from the Scanner class, which of the following class/es can be used for text file file input
14 / 50
The code below draws a line. What color is the line? g.setColor(Color.red.green.yellow.red); g.drawLine(0, 0, 100,100);
15 / 50
If we remove String array from main then program____________
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Aside from the Scanner class, which of the following classes can be used for text-file file input?
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DSN stands for _________
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A collection can store..........
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An abstract class --------------- instantiated.
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A top level class may have only the following access modifier.
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In Java garbage collection is done by_______________
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BorderLayout is the default layout manager for a JFrame content pane
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A final class can't be extended.
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JPanel and Applet use ________ as their default layout.
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A top level class without any modifier is accessible to
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29 / 50
The relationship between class and interface is called ________
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Socket is a --------------communication channel between hosts.
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Which of the following is called ' pure abstract class ' ?
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What if the main method is declared as private?
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Which of the following package needs to be import while handling files?
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____________is/are the JSP Implicit Object(s).
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Java developed in __________
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38 / 50
Which of following can be thrown using the throw statement?
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Exceptions must be handled while handling files otherwise it may lead to _____
40 / 50
You can ---------to a network using sockets.
41 / 50
Mouse events can be trapped for ________ GUI component.
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There are _________ types of exceptions in Java
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Static methods only access ___
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Which of the following function will be used to register event handler with events generator (button)?
45 / 50
HahMap takes key as a/an _________
46 / 50
Which of the following stream is a filter stream?
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Which of the following is true about abstract class?
48 / 50
Which of the following syntax is used to attach an input stream to console?
49 / 50
In Java an abstract class cannot be sub-classed
50 / 50
When defining a method you must include a ___________ to declare any exception that might be thrown but is not caught in the method.
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