Java TreeSet.addAll(Collection <? extends E > c)
Syntax
TreeSet.addAll(Collection <? extends E > c) has the following syntax.
public boolean addAll(Collection <? extends E> c)
Example
In the following code shows how to use TreeSet.addAll(Collection <? extends E > c) method.
/*w w w . j a va 2 s. c o m*/
import java.util.Iterator;
import java.util.TreeSet;
public class Main {
public static void main(String[] args) {
TreeSet <Integer> treeone = new TreeSet<Integer> ();
TreeSet <Integer> treetwo = new TreeSet<Integer> ();
treeone.add(12);
treeone.add(13);
treeone.add(14);
treetwo.add(15);
treetwo.add(16);
treetwo.add(17);
// adding treetwo to treeone
treeone.addAll(treetwo);
Iterator<Integer> iterator = treeone.iterator();
while (iterator.hasNext()){
System.out.print(iterator.next());
}
}
}
The code above generates the following result.
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