TreeSet isEmpty() method in java
import java.util.TreeSet;
public class TreeSetIsEmptyMethodExample
{
public static void main(String[] args)
{
TreeSet<String> ts = new TreeSet<String>();
ts.add("violet");
ts.add("green");
ts.add("red");
ts.add("yellow");
ts.add("blue");
ts.add("indigo");
System.out.println("Given TreeSet: " + ts);
// check for empty TreeSet
System.out.println("Is TreeSet empty? " + ts.isEmpty());
// clear TreeSet using clear() method
ts.clear();
// again check for empty TreeSet
System.out.println("Is TreeSet empty? " + ts.isEmpty());
}
}
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