src/main/java/nl/andrewlalis/Main.java

@@ -4,6 +4,8 @@ import nl.andrewlalis.model.database.Database;
 import nl.andrewlalis.git_api.GithubManager;
 import nl.andrewlalis.model.Student;
 import nl.andrewlalis.model.StudentTeam;
+import nl.andrewlalis.ui.control.command.CommandExecutor;
+import nl.andrewlalis.ui.control.command.Executable;
 import nl.andrewlalis.ui.view.InitializerApp;
 import nl.andrewlalis.util.CommandLine;
 import nl.andrewlalis.util.Logging;
@@ -36,8 +38,16 @@ public class Main {
             logger.severe("Unable to save log to file.");
         }
 
+        CommandExecutor executor = new CommandExecutor();
+        executor.registerCommand("test", args1 -> {
+            System.out.println("TESTING");
+            return true;
+        });
+
         // Initialize User Interface.
-        InitializerApp app = new InitializerApp();
+        InitializerApp app = new InitializerApp(executor);
+
+        app.begin();
 
         logger.info("GithubManager for Github Repositories in Educational Organizations.");
 

src/main/java/nl/andrewlalis/model/database/Database.java

@@ -5,7 +5,10 @@ import nl.andrewlalis.model.Student;
 import nl.andrewlalis.model.TeachingAssistant;
 import nl.andrewlalis.model.Team;
 
-import java.sql.*;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
 import java.util.List;
 import java.util.logging.Logger;
 

src/main/java/nl/andrewlalis/ui/control/CommandExecutor.java

@@ -1,10 +0,0 @@
-package nl.andrewlalis.ui.control;
-
-/**
- * Manages parsing an entered string and executing a task based upon information in the command.
- */
-public class CommandExecutor {
-
-
-
-}

src/main/java/nl/andrewlalis/ui/control/CommandFieldKeyListener.java

@@ -1,24 +0,0 @@
-package nl.andrewlalis.ui.control;
-
-import java.awt.event.KeyEvent;
-import java.awt.event.KeyListener;
-
-public class CommandFieldKeyListener implements KeyListener {
-
-    @Override
-    public void keyTyped(KeyEvent keyEvent) {
-
-    }
-
-    @Override
-    public void keyPressed(KeyEvent keyEvent) {
-
-    }
-
-    @Override
-    public void keyReleased(KeyEvent keyEvent) {
-        if (keyEvent.getKeyCode() == KeyEvent.VK_ENTER) {
-            System.out.println("Enter pressed.");
-        }
-    }
-}

src/main/java/nl/andrewlalis/ui/control/command/CommandExecutor.java

@@ -0,0 +1,61 @@
+package nl.andrewlalis.ui.control.command;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.logging.Logger;
+
+/**
+ * Manages parsing an entered string and executing a task based upon information in the command.
+ */
+public class CommandExecutor {
+
+    /**
+     * The logger for outputting debug info.
+     */
+    private static final Logger logger = Logger.getLogger(CommandExecutor.class.getName());
+    static {
+        logger.setParent(Logger.getGlobal());
+    }
+
+    /**
+     * A list of named commands which can be executed.
+     */
+    private Map<String, Executable> commands;
+
+    public CommandExecutor() {
+        this.commands = new HashMap<>();
+    }
+
+    /**
+     * Adds a new command to the list of commands which this executor can handle.
+     * @param commandName The name that the command will be found by.
+     * @param executable The executable command that is bound to the given name.
+     */
+    public void registerCommand(String commandName, Executable executable) {
+        this.commands.put(commandName, executable);
+    }
+
+    /**
+     * Attempts to execute a command string, or show an error message if an invalid command or argument was entered.
+     * @param commandString The String command and any arguments that go with it.
+     */
+    public void executeString(String commandString) {
+        String[] words = commandString.trim().toLowerCase().split(" ");
+        if (words.length < 1) {
+            logger.warning("No command supplied.");
+            return;
+        }
+        String commandName = words[0];
+        String[] args = new String[words.length - 1];
+        if (words.length > 1) {
+            System.arraycopy(words, 1, args, 0, words.length - 1);
+        }
+        if (this.commands.containsKey(commandName)) {
+            this.commands.get(commandName).execute(args);
+            logger.info(commandString);
+        } else {
+            logger.warning(commandName + " is not a valid command.");
+        }
+    }
+
+}

src/main/java/nl/andrewlalis/ui/control/command/Executable.java

@@ -0,0 +1,17 @@
+package nl.andrewlalis.ui.control.command;
+
+/**
+ * Classes which implement this interface tell that they may be 'executed', either via command-line, or through the use
+ * of user interface actions.
+ */
+public interface Executable {
+
+    /**
+     * Runs this Executable's main functionality.
+     *
+     * @param args The list of arguments supplied to the executable.
+     * @return True if successful, false if an error occurred.
+     */
+    boolean execute(String[] args);
+
+}

src/main/java/nl/andrewlalis/ui/control/listeners/CommandFieldKeyListener.java

@@ -0,0 +1,42 @@
+package nl.andrewlalis.ui.control.listeners;
+
+import nl.andrewlalis.ui.control.command.CommandExecutor;
+
+import javax.swing.*;
+import java.awt.event.KeyEvent;
+import java.awt.event.KeyListener;
+
+/**
+ * This Key Listener listens for when the ENTER key is pressed in the command-line text field, and executes the command
+ * when that is the case.
+ */
+public class CommandFieldKeyListener implements KeyListener {
+
+    /**
+     * This is responsible for parsing and running entered commands.
+     */
+    CommandExecutor executor;
+
+    public CommandFieldKeyListener(CommandExecutor executor) {
+        this.executor = executor;
+    }
+
+    @Override
+    public void keyTyped(KeyEvent keyEvent) {
+
+    }
+
+    @Override
+    public void keyPressed(KeyEvent keyEvent) {
+
+    }
+
+    @Override
+    public void keyReleased(KeyEvent keyEvent) {
+        if (keyEvent.getKeyCode() == KeyEvent.VK_ENTER) {
+            JTextField inputField = (JTextField) keyEvent.getComponent();
+            this.executor.executeString(inputField.getText());
+            inputField.setText(null);
+        }
+    }
+}

src/main/java/nl/andrewlalis/ui/view/InitializerApp.java

@@ -1,12 +1,11 @@
 package nl.andrewlalis.ui.view;
 
-import nl.andrewlalis.ui.control.CommandFieldKeyListener;
+import nl.andrewlalis.ui.control.command.CommandExecutor;
+import nl.andrewlalis.ui.control.listeners.CommandFieldKeyListener;
 import nl.andrewlalis.ui.control.OutputTextHandler;
 
 import javax.swing.*;
 import java.awt.*;
-import java.awt.event.KeyEvent;
-import java.awt.event.KeyListener;
 import java.util.logging.Logger;
 
 /**
@@ -24,14 +23,29 @@ public class InitializerApp extends JFrame {
      */
     private static final Dimension SIZE = new Dimension(800, 600);
 
+    /**
+     * The pane on which general purpose program output is written.
+     */
     private OutputTextPane outputTextPane;
 
-    public InitializerApp() {
+    /**
+     * The executor responsible for performing meaningful actions.
+     */
+    private CommandExecutor executor;
+
+    public InitializerApp(CommandExecutor executor) {
+        this.executor = executor;
+
+        // UI initialization.
         this.initFrame();
     }
 
-    public void printMessage() {
-
+    /**
+     * Begins showing the application
+     */
+    public void begin() {
+        this.pack();
+        this.setVisible(true);
     }
 
     /**
@@ -57,9 +71,7 @@ public class InitializerApp extends JFrame {
 
         this.setContentPane(mainPanel);
 
-        this.pack();
         this.initLoggingHandler();
-        this.setVisible(true);
     }
 
     /**
@@ -77,7 +89,7 @@ public class InitializerApp extends JFrame {
         textEnterPanel.setBorder(BorderFactory.createLoweredBevelBorder());
         textEnterPanel.add(new JLabel("Command:"), BorderLayout.WEST);
         JTextField commandField = new JTextField();
-        commandField.addKeyListener(new CommandFieldKeyListener());
+        commandField.addKeyListener(new CommandFieldKeyListener(this.executor));
         textEnterPanel.add(commandField, BorderLayout.CENTER);
         // Top Label
         JLabel commandPanelLabel = new JLabel("Program output", SwingConstants.CENTER);

src/main/java/nl/andrewlalis/util/Logging.java

@@ -14,7 +14,7 @@ public class Logging {
     public static void setup(boolean verbose) throws IOException {
         Logger logger = Logger.getGlobal();
 
-        outputFile = new FileHandler("log/latest.txt");
+        outputFile = new FileHandler("log/latest.log");
         formatter = new SimpleFormatter();
 
         outputFile.setFormatter(formatter);