CODEWITHSUNDEEP
java
Said Marar
Said Marar

Reputation: 105

Java unreachable code

i create a thread (server) who read string from the input (System.in) and make an output to the client and when i try to close streams i get this error : unreachable code when i call this function closeStream() here is the code please help:

import java.io.*;
public class ThreadWrite extends Thread{
        private PrintWriter output;
        private BufferedReader inputServer;
        private final boolean test=true;
        public ThreadWrite(PrintWriter out) {
            output = out;
            inputServer = new BufferedReader(new InputStreamReader(System.in));
        }

        public void run(){
            String send;
            while(test){
                System.out.print("Server:");
                try {
                    send = inputServer.readLine();
                    output.println(send);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            closeStream();
        }

        public void closeStream() throws Exception{
            inputServer.close();
            output.close();
        }


}

need your help

Upvotes: 1

Views: 411

Answers (5)

Harsh Singal
Harsh Singal

Reputation: 387

You have mentioned closeStream() outside the while loop and condition of is always true and there is no statement in your while loop that breaks it and reaches closeStream() method.

Upvotes: 0

Thomas
Thomas

Reputation: 12009

Test is a final variable which is true. You never leave the

while(test)

loop.

Upvotes: 0

Sirko
Sirko

Reputation: 74046

You declared test as final, so its value can not be changed and will remain true.

So inside the while condition just the true remains and there is no way, that while can ever end (other than Exceptions etc.). Thus the line after the while can not be reached.

Upvotes: 1

Maxim Shoustin
Maxim Shoustin

Reputation: 77904

You never change boolean test to false and you can't (since its final) therefore you never move out from while loop.

Java

Upvotes: 1

Eran
Eran

Reputation: 393811

while(test) always returns true, so the statement following the while loop (closeStream();) is not reachable.

Upvotes: 2

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