This example shows how to remove all elements from Vector at once. You can call the method clear() to remove all values from Vector with a single call.

import java.util.Vector; 

public class Clear_vector {

 public static void main(String[] args) {
 Vector< String>  vct = new Vector< String> (); 
 //add elements
 vct.add("un"); 
 vct.add("two"); 
 vct.add("three"); 
 vct.add("four"); 
 
 System.out.println("Before deletion:"); 
 for(String e:vct)
 System.out.println(e); 

 System.out.println("\nAfter deletion:"); 
 vct.clear(); 
 for(String e:vct)
 System.out.println(e); 
 }
}

Runtime:

Before deletion:
one
two
three
four

After deletion: