Tut2 3.1-10
...........\.classpath
...........\.project
...........\bin
...........\...\CheckerBoard.class
...........\...\CheckMark.class
...........\...\CheckNumber.class
...........\...\ComputPI.class
...........\...\Fibonacci.class
...........\...\Harmonic.class
...........\...\PrintWord.class
...........\...\SquareBoard.class
...........\...\SumAndAverage.class
...........\...\TimeTable.class
...........\src
...........\...\CheckerBoard.java
...........\...\CheckMark.java
...........\...\CheckNumber.java
...........\...\ComputPI.java
...........\...\Fibonacci.java
...........\...\Harmonic.java
...........\...\PrintWord.java
...........\...\SquareBoard.java
...........\...\SumAndAverage.java
...........\...\TimeTable.java