Merge pull request #32 from hoshino0318/sandbox

Sandbox
add ex19_01
delete trailing white spaces
add ex19_02
Merge pull request #33 from hoshino0318/ch19

Ch19
add .settings
add setSize
Merge pull request #34 from hoshino0318/gui04

add setSize
add ex20_01
add CountSpace (sample)
add UppercaseConvertor
add ex20_02
add ex20_03
add ex20_04
add Pipe.java
add FindChar.java
add ex20_05
add Concat.java
add Concat.java
add Concat.java