implement basic i18n

src/main/java/com/mykola2312/mptv/I18n.java

@@ -0,0 +1,26 @@
+package com.mykola2312.mptv;
+
+import java.util.Locale;
+import java.util.MissingResourceException;
+import java.util.ResourceBundle;
+
+public class I18n {
+    private static ResourceBundle bundle;
+
+    public static String get(String key) {
+        if (bundle == null) {
+            String locale = Locale.getDefault().toString();
+            bundle = ResourceBundle.getBundle("i18n_" + locale);
+            if (bundle == null) {
+                bundle = ResourceBundle.getBundle("i18n_enUS");
+            }
+        }
+
+        try {
+            return bundle.getString(key);
+        } catch (MissingResourceException e) {
+            System.err.println(e.toString());
+            return key;
+        }
+    }
+}

src/main/java/com/mykola2312/mptv/ui/MainFrame.java

@@ -1,13 +1,18 @@
 package com.mykola2312.mptv.ui;
 
+import com.mykola2312.mptv.I18n;
+
 import javax.swing.*;
 
 public class MainFrame {
     private JFrame frame;
 
     public void create() {
-        this.frame = new JFrame("MPTV");
+        this.frame = new JFrame(I18n.get("MainFrame_Title"));
 
+        frame.setUndecorated(true);
+        frame.getRootPane().setWindowDecorationStyle(JRootPane.NONE);
+        frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setVisible(true);
     }

src/main/resources/i18n_en_US.properties

@@ -0,0 +1 @@
+MainFrame_Title=MPTV