Java Vector clear() Method with Examples

by Online Tutorials Library July 22, 2014

Java Vector clear() Method

The clear() method of Java Vector class is used to remove all of the elements from the vector which is in use.

Syntax:

Following is the declaration of clear() method:

Parameter:

This method does not accept any parameter.

Returns:

This method has return type void so, it does not return any value.

Exceptions:

Compatibility Version:

Java 1.2 and above

Example 1:

  import java.util.Vector;  public class VectorClearExample1 {    public static void main(String arg[]) {  //Create an empty Vector            Vector<String> vc = new Vector<>();        //Add elements in the vector by using add() method        vc.add(“A”);        vc.add(“B”);        vc.add(“C”);        //Print the size of vector        System.out.println(“Size of Vector before clear() method: “+vc.size());        //Clear the vector        vc.clear();        System.out.println(“Size of Vector after clear() method: “+vc.size());              }  }  

Test it Now

Output:

Size of Vector before clear() method: 3  Size of Vector after clear() method: 0

Example 2:

  import java.util.Vector;  public class VectorClearExample2 {    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(“Elements of Vector is: “+vecObject);        //Clear vector        vecObject.clear();        System.out.println(“Elements of Vector after clear(): “+vecObject);              }  }  

Test it Now

Output:

Elements of Vector is: [3, 5, 2, 4, 1]  Elements of Vector after clear(): []

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