Hierarchy
.........\.classpath
.........\.project
.........\bin
.........\...\Diamond.class
.........\...\Draw2Test.class
.........\...\Rectangle.class
.........\...\Shape.class
.........\...\Square.class
.........\...\Triangle.class
.........\src
.........\...\Diamond.java
.........\...\Draw2Test.java
.........\...\Rectangle.java
.........\...\Shape.java
.........\...\Square.java
.........\...\Triangle.java