Java Vector capacity() Method with Examples

by Online Tutorials Library July 22, 2022

Java Vector capacity() Method

The capacity() method of Java Vector class is used to get the current capacity of the vector which is in use.

Syntax:

Following is the declaration of capacity() method:

Parameter:

This method does not accept any parameter.

Returns:

This method returns the current capacity of the vector which is in use.

Exceptions:

Compatibility Version:

Java 1.2 and above

Example 1:

  import java.util.Vector;  public class VectorCapacityExample1 {    public static void main(String arg[]) {  //Create an empty Vector with initial capacity of 5        Vector<Integer> vecObject = new Vector<Integer>(5);  //Add values in the vector  vecObject.add(3);  vecObject.add(5);  vecObject.add(2);  vecObject.add(4);  vecObject.add(1);        System.out.println(“Current capacity of Vector is: “+vecObject.capacity());                    }  }  

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Output:

Current capacity of Vector is: 5

Example 2:

  import java.util.Vector;  public class VectorCapacityExample2 {    public static void main(String arg[]) {  //Create an empty Vector with an initial capacity of 3              Vector<String> vc = new Vector<>(3);        //Add elements in the vector        vc.add(“A”);        vc.add(“B”);        vc.add(“C”);              //Print all the elements of a Vector        System.out.println(“Elements of Vector are: “+vc);               System.out.println(“Current capacity of Vector: “+vc.capacity());        //Add new element        vc.add(“TutorAspire”);        //After addition, print all the elements again         System.out.println(“Elements after addition: “+vc);               System.out.println(“Current capacity of Vector after modification: “+vc.capacity());              }  }  

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Output:

Elements of Vector are: [A, B, C]  Current capacity of Vector: 3  Elements after addition: [A, B, C, TutorAspire ]  Current capacity of Vector after modification: 6

Example 3:

  import java.util.Vector;  public class VectorCapacityExample3 {    public static void main(String arg[]) {  //Create an empty Vector            Vector<String> vc = new Vector<>();        //Add elements in the vector        vc.add(“A”);        vc.add(“B”);        vc.add(“C”);                    System.out.println(“Default capacity of Vector: “+vc.capacity());              }  }  

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Output:

Default capacity of Vector: 10

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Java Vector capacity() Method with Examples

Java Vector capacity() Method

Syntax:

Parameter:

Returns:

Exceptions:

Compatibility Version:

Example 1:

Example 2:

Example 3:

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