Vector ensureCapacity() method in Java with Example
Last Updated :
24 Dec, 2018
The ensureCapacity() method of Java.util.Vector class increases the capacity of this Vector instance, if necessary, to ensure that it can hold at least the number of elements specified by the minimum capacity argument.
Syntax:
public void ensureCapacity(int minCapacity)
Parameters: This method takes the desired minimum capacity as a parameter.
Below are the examples to illustrate the ensureCapacity() method.
Example 1:
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
throws Exception
{
try {
Vector<Integer>
vector = new Vector<Integer>();
vector.add( 10 );
vector.add( 20 );
vector.add( 30 );
vector.add( 40 );
System.out.println( "Vector: "
+ vector);
vector.ensureCapacity( 5000 );
System.out.println( "Vector can now"
+ " surely store upto"
+ " 5000 elements." );
}
catch (Exception e) {
System.out.println(e);
}
}
}
|
Output:
Vector: [10, 20, 30, 40]
Vector can now surely store upto 5000 elements.
Example 2:
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
throws Exception
{
try {
Vector<String>
vector = new Vector<String>();
vector.add( "A" );
vector.add( "B" );
vector.add( "C" );
vector.add( "D" );
System.out.println( "Vector: "
+ vector);
vector.ensureCapacity( 400 );
System.out.println( "Vector can now"
+ " surely store upto"
+ " 400 elements." );
}
catch (Exception e) {
System.out.println(e);
}
}
}
|
Output:
Vector: [A, B, C, D]
Vector can now surely store upto 400 elements.
Share your thoughts in the comments
Please Login to comment...