import
scala.io._
import
java.io.
{
FileNotFoundException
,
IOException
}
val
filename
=
"no-such-file.scala"
try
{
for
(
line
<-
Source
.
fromFile
(
filename
).
getLines
)
{
println
(
line
)
}
}
catch
{
case
e
:
FileNotFoundException
=>
println
(
"Couldn't find that file."
)
case
e
:
IOException
=>
println
(
"Got an IOException!"
)
}
finally{
filename.close
}
val
file
=
new
File
(
canonicalFilename
)
val
bw
=
new
BufferedWriter
(
new
FileWriter
(
file
))
bw
.
write
(
text
)
bw
.
close
()
2. Read and write binary files in Scala
import
java.io._
object
CopyBytes
extends
App
{
var
in
=
None
:
Option
[
FileInputStream
]
var
out
=
None
:
Option
[
FileOutputStream
]
try
{
in
=
Some
(
new
FileInputStream
(
"/tmp/Test.class"
))
out
=
Some
(
new
FileOutputStream
(
"/tmp/Test.class.copy"
))
var
c
=
0
while
({
c
=
in
.
get
.
read
;
c
!=
−
1
})
{
out
.
get
.
write
(
c
)
}
}
catch
{
case
e
:
IOException
=>
e
.
printStackTrace
}
finally
{
println
(
"entered finally ..."
)
if
(
in
.
isDefined
)
in
.
get
.
close
if
(
out
.
isDefined
)
out
.
get
.
close
}
}
No comments:
Post a Comment