Which of these are legacy classes?
1.Vector
2.Hashtable
3.Stack
4.All of the above
Posted Date:-2021-10-25 05:30:00
Which of these is a method of ObjectInput interface used to deserialize an object from a stream?
1.Object WriteObject()
2.void close()
3.Object readObject()
4.int read()
Posted Date:-2021-10-25 05:30:00
All of the above
1.HashMap
2.Enumeration
3.Hashtable
4.Map
Posted Date:-2021-10-25 05:30:00
What is the name of data member of class Vector which is used to store number of elements in the vector?
1.elements
2.elementCount
3.length
4.capacity
Posted Date:-2021-10-25 05:30:00
Which of these class can generate an array which can increase and decrease in size automatically?
1.DynamicsList()
2.DynamicList()
3.ArrayList()
4.LinkedList()
Posted Date:-2021-10-25 05:30:00
Which of these class extend InputStream class?
1.ObjectInputStream
2.ObjectStream
3.ObjectInput
4.ObjectOutput
Posted Date:-2021-10-25 05:30:00
Which of these class object can be used to form a dynamic array?
1.ArrayList
2.Map
3.Both a & b
4.Vector
Posted Date:-2021-10-25 05:30:00
Which of these class object has architecture similar to that of array?
1.Hashtable
2.Bitset
3.Map
4.All of the above
Posted Date:-2021-10-25 05:30:00
Which of these class object uses key to store value?
1.Dictionary
2.Map
3.Hashtable
4.All of the above
Posted Date:-2021-10-25 05:30:00
Which of these classes implements Set interface?
1.LinkedList
2.DynamicList
3.HashSet
4.ArrayList
Posted Date:-2021-10-25 05:30:00
Which of these classes provide implementation of map interface?
1.LinkedList
2.HashMap
3.ArrayList
4.DynamicList
Posted Date:-2021-10-25 05:30:00
Which of these interface extends DataInput interface?
1.Serializable
2.ObjectInput
3.Externalization
4.ObjectOutput
Posted Date:-2021-10-25 05:30:00
Which of these interface extends DataOutput interface?
1.Externalization
2.Serializable
3.ObjectInput
4.ObjectOutput
Posted Date:-2021-10-25 05:30:00
Which of these is a class which uses String as a key to store the value in object?
1.ArrayList
2.Properties
3.Dictionary
4.Array
Posted Date:-2021-10-25 05:30:00
Which of these is a method of class Date which is used to search weather object contains a date before the specified date?
1.contains()
2.after()
3.compareTo()
4.before()
Posted Date:-2021-10-25 05:30:00
Which of these is a method of ObjectOutput interface used to finalize the output state so that any buffers are cleared?
1.flush()
2.close()
3.fflush()
4.clear()
Posted Date:-2021-10-25 05:30:00
Which of these is a process of extracting/removing the state of an object from a stream?
1.Externalization
2.Deserialization
3.Serialization
4.File Filtering
Posted Date:-2021-10-25 05:30:00
Which of these is a process of writing the state of an object to a byte stream?
1.Externalization
2.Serialization
3.File Filtering
4.All of the above
Posted Date:-2021-10-25 05:30:00
Which of these is an interface for control over serialization and deserialization?
1.Externalization
2.Serializable
3.FileFilter
4.ObjectInput
Posted Date:-2021-10-25 05:30:00
Which of these is method of ObjectOutput interface used to write the object to input or output stream as required?
1.StreamWrite()
2.writeObject()
3.Write()
4.write()
Posted Date:-2021-10-25 05:30:00
Which of these is the interface of legacy is implemented by Hashtable and Dictionary classes?
1.Map
2.HashMap
3.Hashtable
4.Enumeration
Posted Date:-2021-10-25 05:30:00
Which of these method can be used to increase the capacity of ArrayList object manually?
1.ensureCapacity()
2.increasecapacity()
3.increaseCapacity()
4.Capacity()
Posted Date:-2021-10-25 05:30:00
Which of these method can be used to make the main thread to be executed last among all the threads?
1.join()
2.stop()
3.sleep()
4.call()
Posted Date:-2021-10-25 05:30:00
Which of these method is used add an element and corresponding key to a map?
1.set()
2.put()
3.add()
4.redo()
Posted Date:-2021-10-25 05:30:00
Which of these method is used to add an element to the start of a LinkedList object?
1.addFirst()
2.AddFirst()
3.first()
4.add()
Posted Date:-2021-10-25 05:30:00
Which of these method is used to calculate number of bits required to hold the BitSet object?
1.numberofBits()
2.indexes()
3.length()
4.size()
Posted Date:-2021-10-25 05:30:00
Which of these method is used to change an element in a LinkedList Object?
1.add()
2.change()
3.redo()
4.set()
Posted Date:-2021-10-25 05:30:00
Which of these method is used to find out that a thread is still running or not?
1.Alive()
2.checkRun()
3.run()
4.isAlive()
Posted Date:-2021-10-25 05:30:00
Which of these method is used to insert value and its key?
1.set()
2.put()
3.addElement()
4.insertElement()
Posted Date:-2021-10-25 05:30:00
Which of these method is used to make a bit zero specified by the index?
1.clear()
2.put()
3.set()
4.remove()
Posted Date:-2021-10-25 05:30:00
Which of these method is used to make all elements of an equal to specified value?
1.fill()
2.add()
3.set()
4.all()
Posted Date:-2021-10-25 05:30:00
Which of these method is used to reduce the capacity of an ArrayList object?
1.trimTosize()
2.trimToSize()
3.trimSize()
4.trim()
Posted Date:-2021-10-25 05:30:00
Which of these method is used to remove all keys/values pair from the invoking map?
1.remove()
2.delete()
3.removeAll()
4.clear()
Posted Date:-2021-10-25 05:30:00
Which of these method Map class is used to obtain an element in the map having specified key ?
1.get()
2.search()
3.look()
4.set()
Posted Date:-2021-10-25 05:30:00
Which of these method of Array class is used sort an array or its subset?
1.bubblesort()
2.binarysort()
3.insert()
4.sort()
Posted Date:-2021-10-25 05:30:00
Which of these method of ArrayList class is used to obtain present size of an object?
1.index()
2.size()
3.capacity()
4.length()
Posted Date:-2021-10-25 05:30:00
Which of these method of HashSet class is used to add elements to its object?
1.Add()
2.add()
3.insert()
4.addFirst()
Posted Date:-2021-10-25 05:30:00
Which of these methods can be used to delete the last element in a LinkedList object?
1.delete()
2.remove()
3.deleteLast()
4.removeLast()
Posted Date:-2021-10-25 05:30:00
Which of these methods can be used to obtain a static array from an ArrayList object?
1.Array()
2.toArray()
3.covertArray()
4.covertoArray()
Posted Date:-2021-10-25 05:30:00
Which of these methods can be used to obtain set of all keys in a map?
1.keySet()
2.getAll()
3.getKeys()
4.keyall()
Posted Date:-2021-10-25 05:30:00
Which of these methods can be used to search an element in a list?
1.binaryserach()
2.find()
3.sort()
4.get()
Posted Date:-2021-10-25 05:30:00
Which of these methods is used to add elements in vector at specific location?
1.addElement()
2.AddElement()
3.set()
4.add()
Posted Date:-2021-10-25 05:30:00
Which of these methods is used to retrieve elements in BitSet object at specific location?
1.get()
2.Elementat()
3.getProperty()
4.ElementAt()
Posted Date:-2021-10-25 05:30:00
Which of these methods is used to retrieve the elements in properties object at specific location?
1.Elementat()
2.getProperty()
3.ElementAt()
4.get()
Posted Date:-2021-10-25 05:30:00
Which of these object stores association between keys and values?
1.Map
2.Array
3.String
4.Hash table
Posted Date:-2021-10-25 05:30:00
Which of these process occur automatically by java run time system?
1.Garbage collection
2.Serialization
3.File Filtering
4.All of the above
Posted Date:-2021-10-25 05:30:00
Which of these process occur automatically by java run time system?
1.Serialization
2.Deserialization
3.Memory allocation
4.All of the above
Posted Date:-2021-10-25 05:30:00
Which of these standard collection classes implements a linked list data structure?
1.LinkedList
2.HashSet
3.AbstractSet
4.AbstractList
Posted Date:-2021-10-25 05:30:00
Which of these standard collection classes implements all the standard functions on list data structure?
1.HashSet
2.AbstractSet
3.Array
4.LinkedList
Posted Date:-2021-10-25 05:30:00
Which of these standard collection classes implements all the standard functions on list data structure?
1.HashSet
2.AbstractSet
3.LinkedList
4.Array
Posted Date:-2021-10-25 05:30:00