SCJP`difficult`point`in`java`program
....................................\abstractclass.java
....................................\child.java
....................................\GC.java
....................................\ifcon.java
....................................\initstatic.java
....................................\Jframte.java
....................................\Mgos.java
....................................\MyApplet.java
....................................\pakagete.java
....................................\pal.java
....................................\premitive.java
....................................\sss.java
....................................\stringb.java
....................................\Unchecked.java