java.util.Vector.isEmpty() Method


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Description

The isEmpty() method is used to tests if this vector has no components.

Declaration

Following is the declaration for java.util.Vector.isEmpty() method

public boolean isEmpty()

Parameters

  • NA

Return Value

The return value is true if and only if this vector has no components, that is, its size is zero.Otherwise it returns false.

Exception

  • NA

Example

The following example shows the usage of java.util.Vector.isEmpty() method.

package com.tutorialspoint;

import java.util.Vector;

public class VectorDemo {
   public static void main(String[] args) {
   // create an empty Vector vec with an initial capacity of 4      
   Vector vec = new Vector(4);
      
   // let us test the vector
   System.out.println("The vector does not have any element"); 
   System.out.println("The vector is empty: "+vec.isEmpty()); 

   // use add() method to add elements in the vector
   vec.add(4);
   vec.add(3);
   vec.add(2);
   vec.add(1);

   // let us test the vector again
   System.out.println("The vector has elements"); 
   System.out.println("The vector is empty: "+vec.isEmpty()); 
   }     
}

Let us compile and run the above program, this will produce the following result.

The vector does not have any element
The vector is empty: true
The vector has elements
The vector is empty: false

java_util_vector.htm

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