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Quiz von Hello World, aktualisiert more than 1 year ago
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Erstellt von Hello World
vor etwa 8 Jahre
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Frage 1
Frage
201. Which of the following has member elements?
Antworten
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a) Class
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b) Interface
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c) Both
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d) None
Frage 2
Frage
202. Which of the following can be used for implementing runtime polymorphism ?
Antworten
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a) Class
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b) Interface
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c) Both
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d) None
Frage 3
Frage
203. Parent of all collection classes is a/an ….?
Antworten
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a) Class
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b) Interface
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c) Both
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d) None
Frage 4
Frage
204. Which exception is thrown by the read() method of InputStream class?
Antworten
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a) IOException
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b) FileNotFoundException
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c) ReadException
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d) Exception
Frage 5
Frage
205. Which of the following methods can be used to remove a java.awt.Component object from the display?
Antworten
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a) remove()
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b) disappear()
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c) hide()
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d) delete()
Frage 6
Frage
206. Which of the following sets the frame to 300 pixels wide by 200 high?
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a) frm.setSize( 300, 200 );
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b) frm.setSize( 200, 300 );
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c) frm.paint( 300, 200 );
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d) frm.setVisible( 300, 200 );
Frage 7
Frage
207. What is a Graphics object?
Antworten
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a) The Graphics object represents the part of the Frame that you can draw on.
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c) The Graphics object represents the entire monitor.
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b) The Graphics object represents the whole Frame
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d) The Graphics object represents the graphics board.
Frage 8
Frage
208. In Java, the default layout manager for a JFrame component is
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a) BorderLayout
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b) GridBagLayout
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c) FlowLayout
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d) GridLayout
Frage 9
Frage
209. The ListSelectionEvent class and ListSelectionListener interface are available in the _____ package of Java.
Antworten
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a) java.awt.event
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b) javax.swing.event
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c) javax.event
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d) java.event
Frage 10
Frage
210. Which of the following categorizations can be applied to both the data fields and the methods in a Java class?
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a) static and non-static
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b) default and non-default
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c) abstract and non-abstract
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d) native and non-native
Frage 11
Frage
211. Which is a Java access modifier used to designate that a particular data field will not be inherited by a subclass?
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a) protected
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b)final
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c)private
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d) default
Frage 12
Frage
212. Which of these will happen if recursive method does not have a base case?
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a) An infinite loop occurs
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c) After a lot of calls it will be automatically stopped.
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b) System stops the program after some time.
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d) None of the above
Frage 13
Frage
213. Which of these is not a correct statement?
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a) A recursive method must have a base case.
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b) Recursion always uses stack.
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c) Recursive methods are faster that programmers written loop to call the function repeatedly
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d) Recursion is managed by Java’s run time environment.
Frage 14
Frage
214. Which of these packages contains the exception Stackoverflow in Java?
Antworten
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a) java.lang
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b) java.util
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c) java.io
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d) java.system
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