Arnow's Intro to Java

• IT LOOKS LIKE C, SORT OF, UP TO A POINT:
• Java program boilerplate
• Standard Output, Standard Error
• HelloWorld.java, javac, java, the nature of a .class file
• What's similar to C:
  • primitive types and operations,
  • control structures,
  • invocation syntax,
  • array referencing
• I analyzed System.out.println("ech") in terms of ObjectReference .
• Message
• Showed them access of command line args,
• talked about machine independent sizes of numeric types,
• talk about integers not being booleans, introduce boolean, introduced char and Unicode,
• operators (assignment, conditional, etc.) and control structures that are C equivalent,
• primitives vs objects (you can't tell a primitive value to do anything but you can send a message to an object), references vs values.
• Some examples with Strings, toUpperCase(), equals(), compareTo()
• Array declaration and instantiation.
• Briefly introduced Integer class, talked about how the designers could have avoided primitives altogether.