Interface.java

package com.t99sdevelopment.jcli.dummysubpackage;

import java.util.Random;
import java.util.Scanner;

public class Interface implements Runnable {

    private final Thread interfaceThread;
    private String name;
    private volatile boolean isConnected = false;
    private final boolean allowSuggestedYield;

    private final Scanner input;

    Interface() {

        this(generateName(), false);

    }

    Interface(String name) {

        this(name, false);

    }

    Interface(boolean allowSuggestedYield) {

        this(generateName(), allowSuggestedYield);

    }

    Interface(String name, boolean allowSuggestedYield) {

        this.name = name;
        this.allowSuggestedYield = allowSuggestedYield;
        input = new Scanner(System.in);
        InterfaceManager.registerNewInterface(name, this);
        interfaceThread = new Thread(this, "'" + name + "' Interface");

    }

    public boolean connect() {

        if (isConnected) return false;
        else {

            if (InterfaceManager.setCurrentInterface(this)) {

                isConnected = true;
                if (!interfaceThread.isAlive()) interfaceThread.start();
                return true;

            } else return false;

        }

    }

    public boolean disconnect() {

        if (isConnected) {

            isConnected = false;
            if (interfaceThread.isAlive()) {

                try {

                    interfaceThread.join();

                } catch (InterruptedException e) {

                    e.printStackTrace();

                }

            }

            return true;

        } else {

            return false;

        }

    }

    void suggestYield() { // Override this if you want different functionality.

        if (allowSuggestedYield) {

            disconnect();

        }

    }

    public boolean isConnected() {

        if (isConnected && interfaceThread.isAlive() && InterfaceManager.checkIfCurrentInterface(this)) {

            return true;

        } else return false;

    }

    boolean doesAllowSuggestedYield() {

        return allowSuggestedYield;

    }

    private static String generateName() {

        StringBuilder output = new StringBuilder();
        Random random = new Random();

        char[] chars = "ABCDEFGHIJKLMNOPQRSTUVWYXZabcdefghijklmnopqrstuvwyxz1234567890=+".toCharArray();

        for (int i = 0; i < 8; i++) {

            output.append(chars[random.nextInt(chars.length)]);

        }

        return output.toString();

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;
        interfaceThread.setName(name);

    }

    @Override
    public void run() {

        while (isConnected) {

            System.out.print(name + " ~> ");
            CommandInterpreter.interpret(input.nextLine());
            //System.out.println(name + " interface received: " + input.nextLine());

        }

    }

}