// : c11:Set2.java
// Putting your own type in a Set.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.Set;
import java.util.TreeSet;
public class Set2 {
public static Set fill(Set a, int size) {
for (int i = 0; i < size; i++)
a.add(new Integer(i));
return a;
}
public static void test(Set a) {
fill(a, 10);
fill(a, 10); // Try to add duplicates
fill(a, 10);
a.addAll(fill(new TreeSet(), 10));
System.out.println(a);
}
public static void main(String[] args) {
test(new HashSet());
test(new TreeSet());
test(new LinkedHashSet());
}
} ///:~