Set1.java Source code

Introduction

Here is the source code for Set1.java

Source

// : c11:Set1.java
// Things you can do with Sets.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.Set;
import java.util.TreeSet;

public class Set1 {

    static void fill(Set s) {
        s.addAll(Arrays.asList("one two three four five six seven".split(" ")));
    }

    public static void test(Set s) {
        // Strip qualifiers from class name:
        System.out.println(s.getClass().getName().replaceAll("\\w+\\.", ""));
        fill(s);
        fill(s);
        fill(s);
        System.out.println(s); // No duplicates!
        // Add another set to this one:
        s.addAll(s);
        s.add("one");
        s.add("one");
        s.add("one");
        System.out.println(s);
        // Look something up:
        System.out.println("s.contains(\"one\"): " + s.contains("one"));
    }

    public static void main(String[] args) {
        test(new HashSet());
        test(new TreeSet());
        test(new LinkedHashSet());
    }
} ///:~