javac -d e:\wu\lib  MyShape1.java
javac -d e:\wu\lib  MyCircle1.java
javac -d e:\wu\lib  MyRectangle1.java
javac -d e:\wu\lib  MyCuboid1.java
javac -d e:\wu\lib  MyCylinder1.java

javac -d e:\wu\lib  MyShape2.java
javac -d e:\wu\lib  MyCircle2.java
javac -d e:\wu\lib  MyRectangle2.java
javac -d e:\wu\lib  MyCuboid2.java
javac -d e:\wu\lib  MyCylinder2.java

javac -d .  JBE4401.java
java mypack.JBE4401