11.6.17
Using files in java
input output
sequential makes new file, read or write
random writes back to same file, read/write
field - one specific element of data
record - collection of related fields
file
database
Reader abstract class - input txt, 3 abs. methods
subclasses
BuffeedRader
close()
read
-
Writer abstract class - oupu
clse, flush, write
BufferinputStream - optimizes
JFilechooser class