Java SortedSet.headSet(E toElement)
Syntax
SortedSet.headSet(E toElement) has the following syntax.
SortedSet < E > headSet(E toElement)
Example
In the following code shows how to use SortedSet.headSet(E toElement) method.
//from w w w . ja va 2s .c om
import java.util.Arrays;
import java.util.SortedSet;
import java.util.TreeSet;
public class Main {
public static void main(String args[]) throws Exception {
String elements[] = { "I", "P", "E", "G", "P" };
SortedSet set = new TreeSet(Arrays.asList(elements));
System.out.println(set.tailSet("I"));
System.out.println(set.headSet("I"));
System.out.println(set.headSet("I\0"));
System.out.println(set.tailSet("I\0"));
System.out.println(set.subSet("I", "P\0"));
System.out.println(set.subSet("I", "I\0"));
System.out.println(set.subSet("I", "I"));
}
}
The code above generates the following result.
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