Java MCQs with answers Page - 33

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Q. Which of the following is not true?

  • (A) The Frame class extends Window
  • (B) The CheckboxMenuItem class extends the MenuItem class
  • (C) JComponent is a subclass of Container
  • (D) None of the above

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Q. What is the correct way to write a JavaScript array?

  • (A) var txt = new Array:1=("tim")2=("kim")3=("jim")
  • (B) var txt = new Array(1:"tim",2:"kim",3:"jim")
  • (C) var txt = new Array="tim","kim","jim")
  • (D) var txt = new Array("tim","kim","jim")

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Q. What is the correct JavaScript syntax to insert a comment that has more than one line?

  • (A) <!--This comment has more than one line-->
  • (B) /*This comment has more than one line*/
  • (C) //This comment has more than one line//
  • (D) <//This comment has more than one line//>

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Q. What is Remote method invocation (RMI)?

  • (A) RMI allows us to invoke a method of java object that executes on another machine.
  • (B) RMI allows us to invoke a method of java object that executes on another Thread in multithreaded programming.
  • (C) RMI allows us to invoke a method of java object that executes parallely in same machine.
  • (D) None of the mentioned

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Q. Which of this package is used for remote method invocation?

  • (A) java.applet
  • (B) java.rmi
  • (C) java.lang.rmi
  • (D) java.lang.reflect

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Q. Which of these methods are member of Remote class?

  • (A) checkIP()
  • (B) addLocation()
  • (C) AddServer()
  • (D) None of the mentioned

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Q. Which of these Exceptions is thrown by remote method?

  • (A) RemoteException
  • (B) InputOutputException
  • (C) RemoteAccessException
  • (D) RemoteInputOutputException

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Q. Which of this class is used for creating a client for server-client operations?

  • (A) serverClientjava
  • (B) Client.java
  • (C) AddClient.java
  • (D) ServerClient.java

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Q. Which of this package contains classes and interfaces for networking?

  • (A) java.io
  • (B) java.util
  • (C) java.net
  • (D) java.network

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Q. Which of these is superclass of ContainerEvent class?

  • (A) WindowEvent
  • (B) ComponentEvent
  • (C) ItemEvent
  • (D) InputEvent

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