Unit 1 is about basic Java syntax, data types, print and scanner.

By the end of Unit 1, Intro to Java, you should know

• the meanings of bytecode, compile, JDK, JRE, IDE
• how to write a simple java program
  (what a .class file and a .java file are for)
• the difference between print and println
• how to use printf:
  (i) to print a certain number of decimal places,
  (ii) to print a string with lots of variables
• how use escape characters: \n   \t   \'   \"   \\
• how to indent code properly
• how to write single line and multiline comments
• meaning of = sign
• how to use String, int, and double variables
• how to use Math.sqrt(), Math.sin() ...
• the difference between int math and double math
  • divide by zero
  • overflow (a number bigger than is allowed)
  • rounding errors for floating point math
• how to use the 5 basic arithmetic operators (+ - * / %)
• how to use the short cut operators +=   -=   *=   /=   (we'll never use %=)
• the meaning of ++ and -- (e.g. lives--;)
• what operator precedence means and why it is important
• how to make a Scanner object and use the scanner to read in integers, doubles, a word, a sentence.