Code cleaned (unused imports, formatting, IDE warnings, etc)

src/net/apocalypselabs/symat/CodeEditor.java

@@ -32,14 +32,8 @@ import java.awt.Component;
 import java.awt.Font;
 import java.io.BufferedReader;
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
-import java.io.PrintStream;
-import java.nio.charset.Charset;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-import java.nio.file.Paths;
 import javax.swing.JFileChooser;
 import javax.swing.JOptionPane;
 import javax.swing.SwingUtilities;
@@ -63,8 +57,7 @@ public class CodeEditor extends javax.swing.JInternalFrame {
     private final JFileChooser fc = new JFileChooser();
     private boolean isSaved = false;
     private RSyntaxTextArea codeBox = new RSyntaxTextArea();
-    private RTextScrollPane sp;
-    private String lastSaved = "";
+    private final RTextScrollPane sp;
     private boolean fileChanged = false;
 
     private CompletionProvider jscomp = new CodeCompleter("js").getProvider();
@@ -462,7 +455,6 @@ public class CodeEditor extends javax.swing.JInternalFrame {
                 codeBox.setText(FileUtils.readFile(f.toString()));
                 isSaved = true;
                 filedata = f;
-                lastSaved = FileUtils.MD5(codeBox.getText());
                 setTitle("Editor - " + f.getName());
             } catch (IOException ex) {
                 JOptionPane.showInternalMessageDialog(this,

src/net/apocalypselabs/symat/Debug.java

@@ -49,6 +49,7 @@ public class Debug {
         }
     }
 
+    @SuppressWarnings(value = {"CallToPrintStackTrace"}) 
     public static void stacktrace(Exception e) {
         if (DEBUG) {
             e.printStackTrace();

src/net/apocalypselabs/symat/FirstRun.java

@@ -292,7 +292,7 @@ public class FirstRun extends javax.swing.JInternalFrame {
      */
     private class CheckThread extends Thread {
 
-        private String email;
+        private final String email;
 
         public CheckThread(String useremail) {
             email = useremail;
@@ -303,12 +303,12 @@ public class FirstRun extends javax.swing.JInternalFrame {
             try {
                 Debug.println("Checking license...");
                 URL url = new URL(API_URL + "liccheck.php?email=" + email);
-                InputStream is = url.openStream();
-                BufferedReader br = new BufferedReader(new InputStreamReader(is));
-
-                String line = br.readLine();
-                br.close();
-                is.close();
+                String line;
+                try (InputStream is = url.openStream();
+                        BufferedReader br
+                        = new BufferedReader(new InputStreamReader(is))) {
+                    line = br.readLine();
+                }
 
                 switch (line) {
                     case "ok:single":
@@ -356,12 +356,13 @@ public class FirstRun extends javax.swing.JInternalFrame {
                         JOptionPane.QUESTION_MESSAGE);
                 Debug.println("Checking license code (" + code + ")...");
                 URL url = new URL(API_URL + "emailverify.php?code=" + code + "&email=" + email);
-                InputStream is = url.openStream();
-                BufferedReader br = new BufferedReader(new InputStreamReader(is));
-
-                String line = br.readLine();
+                String line;
+                try (InputStream is = url.openStream()) {
+                    BufferedReader br
+                            = new BufferedReader(new InputStreamReader(is));
+                    line = br.readLine();
                     br.close();
-                is.close();
+                }
                 if (code.equals(line)) {
                     success("domain");
                 } else {

src/net/apocalypselabs/symat/Interpreter.java

@@ -31,8 +31,6 @@ import java.awt.Color;
 import java.awt.Font;
 import java.awt.event.KeyEvent;
 import java.io.IOException;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 import javax.swing.JFileChooser;
 import javax.swing.JOptionPane;
 import javax.swing.SwingUtilities;
@@ -412,7 +410,7 @@ public class Interpreter extends javax.swing.JInternalFrame {
                         false);
             } catch (IOException ex) {
                 JOptionPane.showInternalMessageDialog(this,
-                        "Error saving: "+ex.getMessage(),
+                        "Error saving: " + ex.getMessage(),
                         "Error",
                         JOptionPane.ERROR_MESSAGE);
             }
@@ -452,7 +450,7 @@ public class Interpreter extends javax.swing.JInternalFrame {
             }
 
             // Implement ans command
-            String ansfill = "";
+            String ansfill;
             try {
                 ansfill = String.valueOf(Double.parseDouble(ans.toString()));
             } catch (NumberFormatException ex) {
@@ -463,6 +461,7 @@ public class Interpreter extends javax.swing.JInternalFrame {
         }
 
         @Override
+        @SuppressWarnings("null")
         public void run() {
             try {
                 if (doSpecialCommands()) {

src/net/apocalypselabs/symat/MainGUI.java

@@ -29,12 +29,15 @@ package net.apocalypselabs.symat;
 
 import java.awt.Color;
 import java.awt.Font;
+import java.awt.FontFormatException;
 import java.awt.Graphics;
 import java.awt.event.KeyEvent;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 import java.beans.PropertyVetoException;
 import java.io.File;
+import java.io.IOException;
+import java.net.URISyntaxException;
 import java.util.Calendar;
 import java.util.Date;
 import javax.swing.ImageIcon;
@@ -758,7 +761,7 @@ public class MainGUI extends javax.swing.JFrame {
             ubuntuRegular = Font.createFont(Font.TRUETYPE_FONT,
                     new File(MainGUI.class.
                             getResource("resources/Ubuntu-R.ttf").toURI()));
-        } catch (Exception ex) {
+        } catch (URISyntaxException | FontFormatException | IOException ex) {
             ubuntuRegular = Font.getFont(Font.SANS_SERIF);
         }