CSC152 2005F, Class 9: Strings (2)

Admin:
* Warning!  Alum visitors
* Questions on the homework?
  * Eryn available Tuesday from 7pm until 8pm 
  * You may work individually or in pairs
  * You may also consult with your colleagues for ideas or help
  * How do we get information from one file to another file
    * You will need TWO BufferedReaders and TWO PrintWriters
       keyboardEyes = new BufferedReader(the keyboard);
       fileEyes = new BufferedReader(the input file);
       screenPen = new PrintWriter(System.out, true);
       filePen = new PrintWriter(...);

       String line = fileEyes.readLine();
       ... // Identify the "fill in the blank", ask the user,
       ... // and change the line
       filePen.println(modfifiedline);

     * How do I remove the last or first character in a string?
       str = str.substring(1);
     * It's not a homework question, but is there a more elegant way to do the "separate stuff at colons" than
       int colon = str.indexOf(":");
       String first = str.substring(0,colon);
       String rest = str.substring(colon).substring(1);

       * One solution
       int colon = str.indexOf(':');
       String first = str.substring(0,colon);
       String rest = str.substring(colon+1);

       * Another solution:
       int colon = str.indexOf(':');
       String first = str.substring(0,colon);
       int nextcolon = str.indexOf(':',colon+1);
* Side note: Why do we start numbering with 0 rather than 1?
  * One way to think of it in strings (or lists or whatever): the index is "the number of things that appear before this position"
* No reading this weekend; work on the homework
* New Schedule:
  * Today: Finish the strings lab
  * Monday: Numbers
  * Tuesday: Building your own Objects
* Tuesday will be lecture/discussion rather than lab

Overview:
* Continue the strings lab.