Java Utility Library

Java Vector - containsAll() Method

The java.util.Vector.containsAll() method is used to check whether the vector contains all of the elements in the specified Collection or not. It returns true if the vector contains all of the elements in the specified Collection, else returns false.

Syntax

public boolean containsAll(Collection<?> c)

Parameters

`c`	Specify the collection whose elements will be tested for containment in the vector.

Return Value

Returns true if the vector contains all of the elements in the specified Collection, else returns false.

Exception

Throws NullPointerException, if the specified collection is null.

Example:

In the example below, the java.util.Vector.containsAll() method is used to check whether the vector MyVector contains all the elements of LinkedList called MyList.

import java.util.*;

public class MyClass {
  public static void main(String[] args) {
    //creating a vector
    Vector<Integer> MyVector = new Vector<Integer>();

    //populating vector 
    MyVector.add(10);
    MyVector.add(20);
    MyVector.add(30);
    MyVector.add(40);

    //creating linkedlist
    LinkedList<Integer> MyList = new LinkedList<Integer>();

    //populating linkedlist 
    MyVector.add(20);
    MyVector.add(40);

    //checking the containment
    if(MyVector.containsAll(MyList))
      System.out.println("MyVector contains all elements of MyList.");
    else
      System.out.println("MyVector does not contain all elements of MyList.");     
  }
}

The output of the above code will be:

MyVector contains all elements of MyList.

❮ Java.util - Vector