import java.io.*;
import java.util.*;

class ParseAndStoreCommandOutput {

   public static void main(String args[]) {

      // Each array is used to store an individual "column" of the output....
      ArrayList< String > ProcessNames = new ArrayList< String >();
      ArrayList< String > ProcessIDs   = new ArrayList< String >();
      ArrayList< String > OtherInfo    = new ArrayList< String >();

      try {

         // go execute the command as an externeal process
         Process p = Runtime.getRuntime().exec("ps");
         // NOTE: Ethan, you'll want to change the above command "ps -ax" to
         // "tasklist" for this to work on Windows.


         // "connect" to the output of that commnad.  This gives us a new object
         // called "pOutput" which, as we'll see, is the output of the above
         // process.  We can read from it just as we would read from a file.
         BufferedReader pOutput = new BufferedReader(new InputStreamReader(p.getInputStream()));

         // read the output of the process one line at a time...
         String line;
         while ((line = pOutput.readLine()) != null) {

            // now, we parse this line into "tokens" (breaking it up by spaces) by doing
            // the following...
            StringTokenizer tokenizer = new StringTokenizer(line);

            // Just grab the first 3 tokens and put them into the arrays...
            ProcessNames.add( tokenizer.nextToken() );
            ProcessIDs.add( tokenizer.nextToken() );
            OtherInfo.add( tokenizer.nextToken() );
         }

      } catch (Exception e) { }



      // Now, we output whatever was stored in the arrays...
      System.out.print("PROCESS NAME          PROCESS ID        OTHER INFO\n");
      System.out.print("------------          ----------        ----------\n");

      for (int i = 0; i < ProcessNames.size(); i++) {
         System.out.print( ProcessNames.get(i) );
         System.out.print("\t");
         System.out.print( ProcessIDs.get(i) );
         System.out.print("\t");
         System.out.print( OtherInfo.get(i) );
         System.out.print("\n");
      }

   }

}