How to have receive string array using join?
I'm trying to create server TCP socket that receives from client array of integers.
Having a problem with line:
int joined = Integer.valueOf(String.join(",", list));
in "ser" class. I know what I wrote is absolutely not possible but might help in describing what I want to do.
CLIENT:
import java.io.DataInputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class cli {
private static Socket socket;
private static final int PORT = 8000;
private static DataInputStream input;
private static ObjectOutputStream output;
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("Enter number of the elements in array: ");
int broj = in.nextInt();
List<Integer> listica = new ArrayList<>();
System.out.println("Enter numbers for your array : ");
for (int i = 0; i < broj; i++) {
listica.add(in.nextInt());
}
try {
socket = new Socket("localhost", PORT);
output = new ObjectOutputStream(socket.getOutputStream());
input = new DataInputStream(socket.getInputStream());
output.writeObject(listica);
String str = input.readUTF();
System.out.println("New array of numbers is : ");
System.out.println(str);
} catch (IOException ex) {
ex.printStackTrace();
} finally {
in.close();
}
}
}
SERVER
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
public class ser {
private static ServerSocket server;
private static Socket socket;
private static final int PORT = 8000;
private static ObjectInputStream input;
private static DataOutputStream output;
public static void main(String[] args) {
List<Integer> list = new ArrayList<>();
try {
try {
server = new ServerSocket(PORT);
socket = server.accept();
input = new ObjectInputStream(socket.getInputStream());
Object ob = input.readObject();
System.out.println("Data that is sent from client :");
System.out.println(ob);
list = (List<Integer>) ob;
int joined = Integer.valueOf(String.join(",", list));
output = new DataOutputStream(socket.getOutputStream());
output.writeByte(joined);
} catch (ClassNotFoundException ex) {
ex.printStackTrace();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
}