Primary material: Lecture 7 (Review)
      Especially the Practice Problems #1 in Lecture 7
      For the first of these, here is a Worksheet.
      Solution (Don't look at until you've tried the problem.)

Next in importance: Project 1 and its solution

Next in importance: Lectures 1 to 6: See Calendar

Next in importance: Recitations 1 to 6: See Calendar

Things you will not be tested on:

• No Graphics: including no applets and no paint as described in Lecture 6
• no StringTokenizer: as described in Lecture 6

Topic covered on Exam 1 include:

• the basics:
  • operators, assignments
  • primitive data types
  • if-else
  • loops (for and while)
  • switch
• strings
• object-oriented terminology
• classes (defining classes, creating them, using them).
• simple examples of classes:
  • Button in Lecture 1
  • Random, Math, Rectangle, and Counter in Lecture 2
  • Account class in Lecture 4
  • Frog class in Lecture 5 and Recitation 4
  • Rational class in Lecture 6
• Special methods in classes: toString(), compareTo()

A few detailed topics:

• The if-else statement. (Remember the rule that an else matches the nearest unmatched if, except that one should always use extra braces {} to avoid having to apply the rule.)

• while loops and for loops. (These are the workhorses of loops in Java. Remember that you can use break to terminate any loop.)
  Here is a practice problem involving while loops: TBD

  Here is a practice problem involving for loops: for loop problem.
  Solution. (Don't access until you've tried the problem.)

• Strings. (Remember that strings in Java are objects, not primitive data types, and as such there are a number of methods for working with strings. Given two strings String s1, s2;, you would not normally compare them for equality with s1 == s2, but instead with s1.equals(s2). Similarly, use s1.compareTo(s2) to compare strings using alphabetic order.) Other important methods are s1.charAt(4) which returns a char, namely the 4th one in the string, using 0 for the first position. Finally, there are methods length, and indexOf.
• classes. (You need to be able to define a class, giving data fields, constructors, and various methods. Then you you need to be able to use new to create instances of the class, and use class methods to do things.)
  For practice problems, see Practice Problems #1