Matching a String in a text file, and return back the meaning of the word in the client part (Scala) - scala

Question

I would like to solve a problem where the client will send a word to the server, and server will run through the text file and return the meaning of the word that is typed by the user. My problem is when a matching word is typed, i will return the match word meaning, at the same time return back other "Word not found" (which is my control statement). So i would like to just return the meaning of the word only if the word is matched and found
Heres my code:
Server part
Future {
//store local socket references for processing
val client = socket
try {
// Get a communication stream associated with the socket
val is = new BufferedReader(new InputStreamReader(client.getInputStream))
// Get a communication stream associated with the socket
val os = new PrintStream(client.getOutputStream)
val inFile = new File(filename)
val readFile = new Scanner(inFile)
var input : String = null;
while (true) {
// Read from input stream
var line: String = is.readLine() // read the word from client
println("The client send " + line)
while (readFile.hasNext()) {
input = readFile.nextLine()
println("From the file " + input)
if (input.contains(line)) {
os.println(input)
os.flush()
}
else{
os.println("Word not found")
}
}
}
} catch {
case e: Exception => e.printStackTrace
} finally {
// Close the connection, but not the server socket
client.close()
}
}
Client Part
val is = new BufferedReader(new InputStreamReader(client.get.getInputStream))
val os = new PrintStream(client.get.getOutputStream) // write to server a strin
println("Please Input Ur word ")
val user = readLine
os.println(user)
while (true) {
var line: String = is.readLine() //receive string from server
println(line)
}
My text file is formatted this way:
super-very good or pleasant; excellent.

Answer 1

Use the following approach:
var found = false;
while (readFile.hasNext() && !found) {
input = readFile.nextLine()
println("From the file " + input)
if (input.contains(line)) {
os.println(input)
os.flush()
found = true;
}
}
if(!found) {
os.println("Word not found")
os.flush()
}
There are much more beautiful ways to do this, but as you seem to be a beginner, this is the simplest solution possible.
If you are interested in a functional approach, I will gladly help.
Hope this helps.