If contain a certain element

ReturnMethodSummary
booleancontains(Object o)Returns true if this list contains the specified element.

  import java.util.LinkedList;

public class Main{
    public static void main(String args[]) {

        LinkedList<String> ll = new LinkedList<String>();


        ll.add("B");
        ll.add("ja v a2s.com");
        ll.addLast("E");
        ll.add("F");


        boolean b = ll.contains("ja v a2s.com");
        System.out.println(b);
    }
}
  

The output:


true
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