Java Vector contains() Method with Examples

by Online Tutorials Library July 22, 2022

Java Vector contains() Method

The contains() method of Java Vector class is used to check the vector which is in use contains the specified element or not. It returns true if this vector contains the specified element, otherwise returns false.

Syntax:

Following is the declaration of contains() method:

Parameter:

Parameter	Description	Required/Optional
o	It is the element whose presence in this vector will be tested.	Required

Returns:

The contains() method returns true if this vector contains the specified element, otherwise returns false.

Exceptions:

Compatibility Version:

Java 1.2 and above

Example 1:

  import java.util.Vector;  public class VectorContainsExample1 {    public static void main(String arg[]) {  //Create an empty Vector              Vector<String> vec = new Vector<>();                     //Add elements to the Vector              vec.add(“Python”);              vec.add(“Java”);              vec.add(“COBOL”);              vec.add(“Ruby”);               //Checking if Java is present or not                      if(vec.contains(“Java”))              {                   System.out.println(“Java is present at the index ” +vec.indexOf(“Java”));              }              else              {                 System.out.println(“Java is not present in the list”);              }        }              }  

Test it Now

Output:

Java is present at the index 1

Example 2:

  import java.util.Vector;  public class VectorContainsExample2 {    public static void main(String arg[]) {     //Create an empty Vector     Vector<Integer>  vec = new Vector<Integer>(4);           vec.add(11);     vec.add(22);     vec.add(33);     vec.add(44);     vec.add(55);     //Here we check the existence of number 33 in the vector     System.out.println(“Existence: “+vec.contains(33));      }              }  

Test it Now

Output:

Existence: true

Next TopicJava Vector

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