Java TreeSet.isEmpty()
Syntax
TreeSet.isEmpty() has the following syntax.
public boolean isEmpty()
Example
In the following code shows how to use TreeSet.isEmpty() method.
/* w w w . j a va 2 s . c o m*/
import java.util.TreeSet;
public class Main {
public static void main(String[] args) {
TreeSet <Integer> treeadd = new TreeSet<Integer> ();
System.out.println(treeadd.isEmpty());
treeadd.add(2);
System.out.println(treeadd.isEmpty());
}
}
The code above generates the following result.
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