Java Vector size() Method with Examples

by Online Tutorials Library July 22, 2014

Java Vector size() Method

The size() method of Java Vector class is used to get the number of components presents in the vector.

Syntax

Following is the declaration of size() method:

Parameter

This method does not accept any parameter.

Return

The size() method returns the number of components presents in a vector.

Exceptions

Compatibility Version

Java 1.2 and above

Example 1

  import java.util.*;  public class VectorSizeExample1 {    public static void main(String arg[]) {      //Create an empty vector      Vector<Integer> vec = new Vector<>();      //Add element in the vector      vec.add(10);      vec.add(20);      vec.add(30);          vec.add(40);      vec.add(50);      //Displaying the vector element      System.out.println(“The vector Element is = “+vec);      //Get the number of components in the vector      System.out.println(“Size of the vector is = “+vec.size());      }              }  

Test it Now

Output:

The vector Element is = [10, 20, 30, 40, 50]  Size of the vector is = 5

Example 2

  import java.util.*;  public class VectorSizeExample2 {    public static void main(String arg[]) {      //Create an empty vector      Vector < String > colors = new Vector < String > (10);      //Add elements in the vector            colors.add(“White”);            colors.add(“Green”);            colors.add(“Black”);            colors.add(“Pink”);      //Get the number of components in the vector      System.out.println(“Size of the vector is = “+colors.size());      }              }  

Test it Now

Output:

Size of the vector is = 4

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