Utilities.java Source code

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Here is the source code for Utilities.java

Source

// : c11:Utilities.java
// Simple demonstrations of the Collections utilities.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Enumeration;
import java.util.List;
import java.util.Vector;

public class Utilities {

    public static void main(String[] args) {
        List list = Arrays.asList("one Two three Four five six one".split(" "));
        System.out.println(list);
        System.out.println("max: " + Collections.max(list));
        System.out.println("min: " + Collections.min(list));
        AlphabeticComparator comp = new AlphabeticComparator();
        System.out.println("max w/ comparator: " + Collections.max(list, comp));
        System.out.println("min w/ comparator: " + Collections.min(list, comp));
        List sublist = Arrays.asList("Four five six".split(" "));
        System.out.println("indexOfSubList: " + Collections.indexOfSubList(list, sublist));
        System.out.println("lastIndexOfSubList: " + Collections.lastIndexOfSubList(list, sublist));
        Collections.replaceAll(list, "one", "Yo");
        System.out.println("replaceAll: " + list);
        Collections.reverse(list);
        System.out.println("reverse: " + list);
        Collections.rotate(list, 3);
        System.out.println("rotate: " + list);
        List source = Arrays.asList("in the matrix".split(" "));
        Collections.copy(list, source);
        System.out.println("copy: " + list);
        Collections.swap(list, 0, list.size() - 1);
        System.out.println("swap: " + list);
        Collections.fill(list, "pop");
        System.out.println("fill: " + list);
        List dups = Collections.nCopies(3, "snap");
        System.out.println("dups: " + dups);
        // Getting an old-style Enumeration:
        Enumeration e = Collections.enumeration(dups);
        Vector v = new Vector();
        while (e.hasMoreElements())
            v.addElement(e.nextElement());
        // Converting an old-style Vector
        // to a List via an Enumeration:
        ArrayList arrayList = Collections.list(v.elements());
        System.out.println("arrayList: " + arrayList);

    }
} ///:~

class AlphabeticComparator implements Comparator {
    public int compare(Object o1, Object o2) {
        String s1 = (String) o1;
        String s2 = (String) o2;
        return s1.toLowerCase().compareTo(s2.toLowerCase());
    }
} ///:~