Sorting Collections and Arrays : Collections « Utility Classes « SCJP

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2.	Operators
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SCJP » Utility Classes » Collections

8.12.3.Sorting Collections and Arrays

import java.util.ArrayList;

import java.util.Collections;



public class MainClass {

  public static void main(String[] args) {

    ArrayList<String> stuff = new ArrayList<String>(); // #1

    stuff.add("A");

    stuff.add("B");

    stuff.add("D");

    stuff.add("A");

    stuff.add("W");

    System.out.println("unsorted " + stuff);

    Collections.sort(stuff); // #2

    System.out.println("sorted   " + stuff);

  }

}

unsorted [A, B, D, A, W]
sorted   [A, A, B, D, W]

8.12.Collections
	8.12.1.	Java Collections
	8.12.2.	Make List a Thread-Safe Class
	8.12.3.	Sorting Collections and Arrays
	8.12.4.	Return a reference to a new Map that accesses the existing data but with synchronized methods

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