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Exit Quiz

Which of the following is not a feature of Java?

  • Object-oriented
  • Use of pointers
  • Platform-independent
  • Robust
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Which of the following statements is true about Java?

  • Java is a platform-independent language
  • Java is a procedural language
  • Java is a pure object-oriented language
  • Java supports both procedural and object-oriented programming
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In Java, what is the correct syntax to output "Hello World"?

  • System.out.println("Hello World");
  • print("Hello World");
  • echo("Hello World");
  • Console.WriteLine("Hello World");
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Which of the following is used to create an object in Java?

  • new
  • create
  • object
  • instance
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What does the 'static' keyword mean in Java?

  • The variable or method is specific to an instance of a class
  • The variable or method is specific to the class
  • The variable or method can be accessed anywhere
  • None of the above
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Which of the following is not a valid access modifier in Java?

  • public
  • private
  • protected
  • package
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Which of the following is used to declare a constant in Java?

  • const
  • final
  • static
  • constant
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What is the size of an int variable in Java?

  • 4 bytes
  • 8 bytes
  • 2 bytes
  • 1 byte
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Which of the following is a marker interface?

  • Serializable
  • Cloneable
  • Remote
  • All of the above
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Which method is used to perform some action when an object is to be destroyed?

  • finalize()
  • delete()
  • remove()
  • destructor()
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Which of these is used to explain the type of exception that is thrown by a method?

  • throw
  • throws
  • thrown
  • exception
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Which of the following is not a Java keyword?

  • static
  • Boolean
  • void
  • private
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What is the default value of a boolean variable in Java?

  • TRUE
  • FALSE
  • null
  • 0
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Which collection class allows you to access its elements by associating a key with an element's value, and provides synchronization?

  • java.util.ArrayList
  • java.util.HashMap
  • java.util.Hashtable
  • java.util.TreeMap
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Which of these classes is not part of Java?s Collection framework?

  • HashMap
  • Hashtable
  • TreeMap
  • LinkedList
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Which of the following is not a valid method of the TreeSet class in Java?

  • add()
  • remove()
  • size()
  • length()
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What is the default value of the boolean data type in Java?

  • TRUE
  • FALSE
  • 0
  • null
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Which of the following is not a valid method of the Math class in Java?

  • abs()
  • ceil()
  • floor()
  • round()
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Which of the following is used to create a static method in Java?

  • static
  • method
  • function
  • procedure
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Which method must be implemented by all threads?

  • run()
  • start()
  • stop()
  • wait()
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Which collection class allows you to grow or shrink its size and provides indexed access to its elements, but whose methods are not synchronized?

  • HashSet
  • LinkedHashSet
  • ArrayList
  • TreeSet
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Which method is used to convert a string into a double in Java?

  • parseDouble()
  • valueOf()
  • convert()
  • toDouble()
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Which of the following is used to handle exceptions in Java?

  • try-catch
  • throw
  • throws
  • All of the above
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Which keyword is used for accessing the features of a package?

  • package
  • import
  • extends
  • implements
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What is the return type of the hashCode() method in Java?

  • int
  • long
  • float
  • double
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Which method can be used to find the length of a string in Java?

  • length()
  • size()
  • getSize()
  • getLength()
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Which of the following is not a valid keyword in Java?

  • static
  • void
  • private
  • constant
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Which of the following is not a Java features?

  • Dynamic
  • Architecture Neutral
  • Use of pointers
  • Object-oriented
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Which of the following is not a wrapper class in Java?

  • Integer
  • Double
  • Character
  • int
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Which of the following is used to create a native method in Java?

  • native
  • method
  • function
  • procedure
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