Java Collection Tutorial - Java Vector.ensureCapacity(int minCapacity)

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Syntax

Vector.ensureCapacity(int minCapacity) has the following syntax.

public void ensureCapacity(int minCapacity)

Example

In the following code shows how to use Vector.ensureCapacity(int minCapacity) method.

import java.util.Vector;
//from  www .  j av a2 s . com
public class Main {
   public static void main(String args[]) {
      Vector vec = new Vector(5);
      for (int i = 0; i < 10; i++) {
         vec.add(0,i);
      }
      System.out.println("Content of the vector: "+vec);
      System.out.println("Size of the vector: "+vec.size());  
      
      // ensure the capacity of the vector and add elements
      vec.ensureCapacity(40);
      for (int i = 0; i < 10; i++) {
         vec.add(0,i);
      }    
      System.out.println(vec);
      System.out.println(vec.size());
  }    
}

The code above generates the following result.

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