Using trim() to process commands.

Here is a Java Program for Using trim() to process commands.

import java.io.*;

class UseTrim {
  public static void main(String args[]) 
    throws IOException
  {
    // create a BufferedReader using System.in
    BufferedReader br = new
      BufferedReader(new InputStreamReader(System.in));
    String str;

    System.out.println("Enter 'stop' to quit.");
    System.out.println("Enter State: ");
    do {
      str = br.readLine();
      str = str.trim(); // remove whitespace

      if(str.equals("Illinois"))
        System.out.println("Capital is Springfield.");
      else if(str.equals("Missouri"))
        System.out.println("Capital is Jefferson City.");
      else if(str.equals("California"))
        System.out.println("Capital is Sacramento.");
      else if(str.equals("Washington"))
        System.out.println("Capital is Olympia.");
      // ... 
    } while(!str.equals("stop"));
  }
}

Output of Above Java Program
Enter 'stop' to quit.
Enter State:
California
Capital is Sacramento.
stop