Refactor code into packages and extract StringUtils class.

build.gradle

@@ -70,5 +70,5 @@ def jarPackage(artifactName) {
 }
 
 artifacts {
-    archives jarPackage("info.augendre.caps_extractor", "0.1.0", "MainWindow")
+    archives jarPackage("info.augendre.caps_extractor", "0.1.0", "CapsExtractorApp")
 }

src/main/java/info/augendre/caps_extractor/CapsExtractorApp.java

@@ -0,0 +1,22 @@
+package info.augendre.caps_extractor;
+
+import info.augendre.caps_extractor.gui.MainWindow;
+
+import javax.swing.*;
+
+/**
+ * Created on 05/06/15.
+ *
+ * @author gaugendre
+ */
+public class CapsExtractorApp {
+    public static void main(String[] args) {
+        try {
+            UIManager.setLookAndFeel(
+                    UIManager.getSystemLookAndFeelClassName());
+        } catch (UnsupportedLookAndFeelException | ClassNotFoundException | InstantiationException | IllegalAccessException e) {
+            e.printStackTrace(System.err);
+        }
+        new MainWindow();
+    }
+}

src/main/java/info/augendre/caps_extractor/actions/AboutAction.java

@@ -1,4 +1,7 @@
-package info.augendre.caps_extractor;
+package info.augendre.caps_extractor.actions;
+
+import info.augendre.caps_extractor.util.I18nSupport;
+import info.augendre.caps_extractor.gui.AboutDialog;
 
 import javax.swing.*;
 import java.awt.event.ActionEvent;

src/main/java/info/augendre/caps_extractor/actions/HelpAction.java

@@ -1,4 +1,7 @@
-package info.augendre.caps_extractor;
+package info.augendre.caps_extractor.actions;
+
+import info.augendre.caps_extractor.util.I18nSupport;
+import info.augendre.caps_extractor.gui.HelpDialog;
 
 import javax.swing.*;
 import java.awt.event.ActionEvent;

src/main/java/info/augendre/caps_extractor/gui/AboutDialog.form

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="info.augendre.caps_extractor.AboutDialog">
+<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="info.augendre.caps_extractor.gui.AboutDialog">
   <grid id="cbd77" binding="contentPane" layout-manager="GridLayoutManager" row-count="2" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
     <margin top="10" left="10" bottom="10" right="10"/>
     <constraints>

src/main/java/info/augendre/caps_extractor/gui/AboutDialog.java

@@ -1,13 +1,15 @@
-package info.augendre.caps_extractor;
+package info.augendre.caps_extractor.gui;
 
 import com.intellij.uiDesigner.core.GridConstraints;
 import com.intellij.uiDesigner.core.GridLayoutManager;
 import com.intellij.uiDesigner.core.Spacer;
+import info.augendre.caps_extractor.util.I18nSupport;
 
 import javax.swing.*;
 import java.awt.*;
-import java.awt.event.*;
-import java.util.ResourceBundle;
+import java.awt.event.KeyEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
 
 public class AboutDialog extends JDialog {
     private JPanel contentPane;

src/main/java/info/augendre/caps_extractor/gui/HelpDialog.form

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="info.augendre.caps_extractor.HelpDialog">
+<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="info.augendre.caps_extractor.gui.HelpDialog">
   <grid id="cbd77" binding="contentPane" layout-manager="GridLayoutManager" row-count="2" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
     <margin top="10" left="10" bottom="10" right="10"/>
     <constraints>

src/main/java/info/augendre/caps_extractor/gui/HelpDialog.java

@@ -1,8 +1,9 @@
-package info.augendre.caps_extractor;
+package info.augendre.caps_extractor.gui;
 
 import com.intellij.uiDesigner.core.GridConstraints;
 import com.intellij.uiDesigner.core.GridLayoutManager;
 import com.intellij.uiDesigner.core.Spacer;
+import info.augendre.caps_extractor.util.I18nSupport;
 
 import javax.swing.*;
 import java.awt.*;

src/main/java/info/augendre/caps_extractor/gui/MainPanel.form

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="info.augendre.caps_extractor.MainPanel">
+<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="info.augendre.caps_extractor.gui.MainPanel">
   <grid id="27dc6" binding="contentPanel" default-binding="true" layout-manager="GridLayoutManager" row-count="3" column-count="3" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
     <margin top="10" left="10" bottom="10" right="10"/>
     <constraints>

src/main/java/info/augendre/caps_extractor/gui/MainPanel.java

@@ -1,8 +1,9 @@
-package info.augendre.caps_extractor;
+package info.augendre.caps_extractor.gui;
 
 import com.intellij.uiDesigner.core.GridConstraints;
 import com.intellij.uiDesigner.core.GridLayoutManager;
 import com.intellij.uiDesigner.core.Spacer;
+import info.augendre.caps_extractor.util.StringUtils;
 
 import javax.swing.*;
 import java.awt.*;
@@ -33,7 +34,7 @@ public class MainPanel {
             @Override
             public void keyReleased(KeyEvent e) {
                 if (parse) {
-                    outputField.setText(extractUpperCase(inputField.getText()));
+                    outputField.setText(StringUtils.extractUpperCase(inputField.getText()));
                 } else {
                     char key = e.getKeyChar();
                     if (Character.isUpperCase(key)) {
@@ -50,23 +51,6 @@ public class MainPanel {
         });
     }
 
-    /**
-     * Extracts the upper case characters from the given string.
-     * @param s The string where to extract upper case characters.
-     * @return The upper case characters found in the given string.
-     */
-    public String extractUpperCase(String s) {
-        String upperCase = "";
-        for (int i = 0; i < s.length(); i++) {
-            char current = s.charAt(i);
-            if (Character.isUpperCase(current)) {
-                upperCase += current;
-            }
-        }
-
-        return upperCase;
-    }
-
     public JPanel getContentPanel() {
         return contentPanel;
     }

src/main/java/info/augendre/caps_extractor/gui/MainWindow.java

@@ -1,4 +1,8 @@
-package info.augendre.caps_extractor;
+package info.augendre.caps_extractor.gui;
+
+import info.augendre.caps_extractor.actions.AboutAction;
+import info.augendre.caps_extractor.actions.HelpAction;
+import info.augendre.caps_extractor.util.I18nSupport;
 
 import javax.swing.*;
 
@@ -32,14 +36,4 @@ public class MainWindow extends JFrame {
         this.setVisible(true);
         this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
     }
-
-    public static void main(String[] args) {
-        try {
-            UIManager.setLookAndFeel(
-                    UIManager.getSystemLookAndFeelClassName());
-        } catch (UnsupportedLookAndFeelException | ClassNotFoundException | InstantiationException | IllegalAccessException e) {
-            e.printStackTrace(System.err);
-        }
-        new MainWindow();
-    }
 }

src/main/java/info/augendre/caps_extractor/util/I18nSupport.java

@@ -20,7 +20,7 @@
  * If not, see <http://www.gnu.org/licenses/>.
  */
 
-package info.augendre.caps_extractor;
+package info.augendre.caps_extractor.util;
 
 import com.jgoodies.common.internal.StringLocalizer;
 import org.jetbrains.annotations.NonNls;

src/main/java/info/augendre/caps_extractor/util/StringUtils.java

@@ -0,0 +1,25 @@
+package info.augendre.caps_extractor.util;
+
+/**
+ * Created on 05/06/15.
+ *
+ * @author gaugendre
+ */
+public class StringUtils {
+    /**
+     * Extracts the upper case characters from the given string.
+     * @param s The string where to extract upper case characters.
+     * @return The upper case characters found in the given string.
+     */
+    public static String extractUpperCase(String s) {
+        String upperCase = "";
+        for (int i = 0; i < s.length(); i++) {
+            char current = s.charAt(i);
+            if (Character.isUpperCase(current)) {
+                upperCase += current;
+            }
+        }
+
+        return upperCase;
+    }
+}