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Clear a collection

ReturnMethodSummary
voidclear()Removes all of the elements from this collection (optional operation).

import java.util.ArrayList;
import java.util.Collection;

public class Main {

  public static void main(String args[]) {
     Collection collection = new ArrayList();
     collection.add("java2s.com");
     
     System.out.println(collection);
     
     collection.clear();
     
     System.out.println(collection);
     
  }
}

The output: 


[java2s.com]
[]
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Get the iterator() from a collection »
 
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