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src/org/nwapw/abacus/window/Window.java

@@ -3,26 +3,76 @@ package org.nwapw.abacus.window;
 import javax.swing.*;
 import java.awt.*;
 
+/**
+ * The main UI window for the calculator.
+ */
 public class Window extends JFrame {
 
+    /**
+     * A collection of outputs from the calculator.
+     */
     private String history;
+    /**
+     * The last output by the calculator.
+     */
     private String lastOutput;
 
+    /**
+     * The panel where the output occurs.
+     */
     private JPanel outputPanel;
+    /**
+     * The text area reserved for the last output.
+     */
     private JTextArea lastOutputArea;
+    /**
+     * The text area used for all history output.
+     */
     private JTextArea historyArea;
+    /**
+     * The scroll pane for the history area.
+     */
     private JScrollPane historyAreaScroll;
 
+    /**
+     * The panel where the input occurs.
+     */
     private JPanel inputPanel;
+    /**
+     * The input text field.
+     */
     private JTextField inputField;
+    /**
+     * The "submit" button.
+     */
     private JButton inputEnterButton;
 
+    /**
+     * The side panel for separate configuration.
+     */
     private JPanel sidePanel;
+    /**
+     * Panel for elements relating to number
+     * system selection.
+     */
     private JPanel numberSystemPanel;
+    /**
+     * The possible list of number systems.
+     */
     private JComboBox<String> numberSystemList;
-    private JButton functionSelectButton;
+    /**
+     * The panel for elements relating to
+     * function selection.
+     */
     private JPanel functionSelectPanel;
+    /**
+     * The list of functions available to the user.
+     */
     private JComboBox<String> functionList;
+    /**
+     * The button used to select a function.
+     */
+    private JButton functionSelectButton;
 
     public Window() {
         super();