java.util.Vector class

java.util.Vector class

java.util.Vector class

• We can store group of objects in Vector object.
• Here group of objects means, it can allow us to store same type of objects and different type of objects.
• Same type means, assuming that all objects are in the form of integer types.
• Different type means, assuming that all objects are in the form of integer, float, String, Student and Customer types also.
• Its a legacy class means introduced in 1.0 version.
• Size will increase dynamically.
• Vector is synchronized.
• At a time only one thread is allowed to access the resource, because of synchronization its performance is very slow.
• Threads need to wait in to access the resource.

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Program         :       Example on Vector class

Program name  :       VDemo1.java

Output            :         

      [1, Nireekshan, Nireekshan, A, 1.1, 1.12345]

     

import java.util.Vector;

class VDemo1

{

       public static void main(String args[])

       {

             Vector vector = new Vector();

              

             vector.add(1);

             vector.add("Nireekshan");
             vector.add("Nireekshan");

             vector.add('A');

             vector.add(1.1f);

             vector.add(1.12345);

             

             System.out.println(vector);

       }

}

Compile       :         javac VDemo1.java

Run             :         java VDemo1

Output        :         

     [1, Nireekshan, Nireekshan, A, 1.1, 1.12345]

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Thanks for your time.

Nireekshan