Adding in the Middle : Vector « Collections « Java Tutorial

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Java Tutorial » Collections » Vector

9. 47. 4. Adding in the Middle


public void add(int index, Object element)

public void insertElementAt(Object element, int index)

the index for the first element of a vector is zero.


import java.util.Vector;



public class MainClass {

  public static void main(String args[]) {

    Vector v = new Vector(5);

    for (int i = 0; i < 10; i++) {

      v.insertElementAt(i,0);

    }

    System.out.println(v);

  }

}

[9, 8, 7, 6, 5, 4, 3, 2, 1, 0]

9. 47. Vector
	9. 47. 1.	Java vectors: dynamically sized arrays with synchronized access.
	9. 47. 2.	The asList() method of the Arrays class will create an object
	9. 47. 3.	Adding Elements: Adding at the End
	9. 47. 4.	Adding in the Middle
	9. 47. 5.	Adding Another Collection
	9. 47. 6.	Printing Vectors: a comma-delimited list, in index order and surrounded by square brackets ([])
	9. 47. 7.	Removing All Elements: clear out all of a vector's elements: clear() and removeAllElements()
	9. 47. 8.	When removing all the elements from a vector, the capacity does not change.
	9. 47. 9.	Removing Single Elements
	9. 47. 10.	Passing the object to remove to either of the remove() or removeElement() methods
	9. 47. 11.	Removing Another Collection: public boolean removeAll(Collection c)
	9. 47. 12.	Retaining Another Collection: public boolean retainAll(Collection c)
	9. 47. 13.	Replacing Elements
	9. 47. 14.	Replace an element at specified index of Java Vector
	9. 47. 15.	Search an element of Java Vector
	9. 47. 16.	Search an element of Vector from specific index
	9. 47. 17.	Replace All Elements Of Vector with Collections.fill
	9. 47. 18.	Sizing Vectors
	9. 47. 19.	Setting vector's size to trim elements
	9. 47. 20.	Storage Capacity
	9. 47. 21.	ensureCapacity(): make sure a vector is large enough before adding elements: public void ensureCapacity(int minCapacity)
	9. 47. 22.	Vector Immutability
	9. 47. 23.	Getting elements by Index without generics
	9. 47. 24.	Getting elements by Index with Generics
	9. 47. 25.	Getting by Position
	9. 47. 26.	Enumerating through the Elements
	9. 47. 27.	Using Iterator to loop through Vector elements
	9. 47. 28.	Using list Iterator to loop through the vector
	9. 47. 29.	Multidimensional Vectors (Vectors of Vectors)
	9. 47. 30.	The contains() method: reports if a specific element is within the vector
	9. 47. 31.	Checking for Position: where it is in the vector
	9. 47. 32.	Checking for Position from End
	9. 47. 33.	Finding all the positions for a single element
	9. 47. 34.	Checking for Collection Containment: containsAll()
	9. 47. 35.	Copying and Cloning Vectors
	9. 47. 36.	Converting the vector to an array: public Object[] toArray()
	9. 47. 37.	Converting the vector to an array: public Object[] toArray(Object[] a)
	9. 47. 38.	Converting the vector to an array: public void copyInto(Object[] anArray)
	9. 47. 39.	subList(): taking a subset of the vector's elements and referencing them from another List
	9. 47. 40.	The Vector's subList() method does not make a clone of the element references
	9. 47. 41.	The equals() method is used to check for element equality
	9. 47. 42.	Checking Vectors for Equality: Containing equivalent elements in identical order
	9. 47. 43.	Count distinct elements in a Vector
	9. 47. 44.	The Vector class overrides the hashCode() method: public int hashCode()
	9. 47. 45.	Serializing Vector
	9. 47. 46.	Replace all occurrences of specified element of Java Vector
	9. 47. 47.	Reverse order of all elements of Java Vector
	9. 47. 48.	Shuffle elements of Vector
	9. 47. 49.	Swap elements of Vector
	9. 47. 50.	Sort Vector in descending order using comparator
	9. 47. 51.	Enumerate through a Vector using Java Enumeration
	9. 47. 52.	Append all elements of other Collection to Vector
	9. 47. 53.	Perform Binary Search on Java Vector
	9. 47. 54.	Get Enumeration over Java Vector
	9. 47. 55.	Find maximum element of Java Vector
	9. 47. 56.	Find Minimum element of Java Vector
	9. 47. 57.	Create Java ArrayList From Enumeration which is from Vector
	9. 47. 58.	Copy Elements of Vector to ArrayList with Collection.copy
	9. 47. 59.	Copy Elements of One Vector to Another Vector with Collection.copy
	9. 47. 60.	Unmodifiable Vector Adapter

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