/**
 * SplitDemo.java
 *   A quick demo of a way to use the String.split function for HW4.
 *
 * @author Samuel A. Rebelsky
 * @version 0.1 of 14 September 2014
 */

import java.io.PrintWriter;
import java.util.Arrays;

/**
 * Watch what happens when we split strings.
 */
public class SplitDemo
{

  /**
   * One demo.  Split a string using a pattern, printing the
   * results with a pen.
   */
  public static void demo(PrintWriter pen, String str, String pattern)
  {
    pen.println("  Using \"" + pattern + "\"");
    pen.print("    ");
    pen.println(Arrays.toString(str.split(pattern)));
  } // demo(PrintWriter, String, String)

  /**
   * One set of demos.  Split a string in multiple ways, printing 
   * results using the pen.
   */
  public static void demo(PrintWriter pen, String str)
  {
    pen.println("Splitting \"" + str + "\"");
    demo(pen, str, " ");
    demo(pen, str, " *");
    demo(pen, str, " +");
    pen.println();
  } // demo(PrintWriter, String)

  public static void main(String[] args)
    throws Exception
  {
    PrintWriter pen = new PrintWriter(System.out, true);

    demo(pen, "3 + 4 + 5");
    demo(pen, "3  + 4 +  5");

    pen.close();
  } // main(String[])
} // SplitDemo