Listing 6: head_sub_tailSetDemo.java
import java.util.*;
public class head_sub_tailSetDemo{
public static void seeElements(SortedSet SS,String info)
{
//see the elements
System.out.println(info);
Iterator i=SS.iterator();
while(i.hasNext()){
System.out.println(i.next());
}
}
public static void main(String args[]) {
//create a SortedSet -> tree structure
SortedSet SS=new TreeSet();
//create a NavigableSet
NavigableSet NS=(NavigableSet)(SS);
//populate the NS
NS.add("Hydro");
NS.add("George");
NS.add("Any");
NS.add("Martin");
NS.add("Wallace");
//headSet - exclusive
System.out.println("----------------------------------------");
SortedSet SSheadSetE=NS.headSet("Martin");
seeElements(SSheadSetE,"headSet exclusive:");
System.out.println("----------------------------------------");
//headSet - inclusive
System.out.println("----------------------------------------");
SortedSet SSheadSetI=NS.headSet("Martin",true);
seeElements(SSheadSetI,"headSet inclusive:");
System.out.println("----------------------------------------");
//subSet - (inclusive,exclusive)
System.out.println("----------------------------------------");
SortedSet SSsubSetIE=NS.subSet("Any","Wallace");
seeElements(SSsubSetIE,"subSet (inclusive,exclusive):");
System.out.println("----------------------------------------");
//subSet - (inclusive,inclusive)
System.out.println("----------------------------------------");
SortedSet SSsubSetII=NS.subSet("Any",true,"Wallace",true);
seeElements(SSsubSetII,"subSet (inclusive,inclusive):");
System.out.println("----------------------------------------");
//subSet - (exclusive,exclusive)
System.out.println("----------------------------------------");
SortedSet SSsubSetEE=NS.subSet("Any",false,"Wallace",false);
seeElements(SSsubSetEE,"subSet (exclusive,exclusive):");
System.out.println("----------------------------------------");
//subSet - (exclusive,inclusive)
System.out.println("----------------------------------------");
SortedSet SSsubSetEI=NS.subSet("Any",false,"Wallace",true);
seeElements(SSsubSetEI,"subSet (exclusive,inclusive):");
System.out.println("----------------------------------------");
//tailSet - inclusive
System.out.println("----------------------------------------");
SortedSet SStailSetI=NS.tailSet("Martin");
seeElements(SStailSetI,"tailSet inclusive:");
System.out.println("----------------------------------------");
//tailSet - exclusvie
System.out.println("----------------------------------------");
SortedSet SStailSetE=NS.tailSet("Martin",false);
seeElements(SStailSetE,"tailSet exclusvie:");
System.out.println("----------------------------------------");
}
}
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