First release

Added first version of Java Web Viewer.
Check Readme.md for details on how to use
a pre-compiled jar has been included for convenance alongside the source in this repo

Author: rmellis

Launch - FullScreen.bat

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+@echo off
+java --module-path lib --add-modules javafx.controls,javafx.web -jar viewer.jar "index.htm" "Java WebApp" 1200 760 true

Launch.bat

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+@echo off
+java --module-path lib --add-modules javafx.controls,javafx.web -jar viewer.jar "index.htm" "Java WebApp" 1200 760

LocalViewer.java

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+import javafx.application.Application;
+import javafx.geometry.Rectangle2D;
+import javafx.scene.Scene;
+import javafx.scene.web.WebView;
+import javafx.stage.Screen;
+import javafx.stage.Stage;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.List;
+
+public class LocalViewer extends Application {
+    public static void main(String[] args) { launch(args); }
+    
+    @Override 
+    public void start(Stage stage) {
+        WebView webView = new WebView();
+        List<String> params = getParameters().getRaw();
+        
+        // FIXED URL HANDLING - handles bare filenames, full paths, and web URLs
+        String url = params.isEmpty() ? Paths.get("index.htm").toUri().toString() : params.get(0);
+        
+        // Convert bare filenames/paths to proper file:// URLs
+        if (!url.startsWith("http") && !url.startsWith("file://")) {
+            try {
+                Path path = Paths.get(url);
+                url = path.toAbsolutePath().toUri().toString();
+            } catch (Exception e) {
+                // Fallback to relative path
+                url = Paths.get(url).toUri().toString();
+            }
+        }
+        
+        String title = params.size() > 1 ? params.get(1) : "Local HTML Viewer";
+        double width = params.size() > 2 && !params.get(2).equalsIgnoreCase("auto") ? 
+                       Double.parseDouble(params.get(2)) : 1200;
+        double height = params.size() > 3 && !params.get(3).equalsIgnoreCase("auto") ? 
+                        Double.parseDouble(params.get(3)) : 800;
+        
+        webView.getEngine().load(url);
+        Scene scene = new Scene(webView, width, height);
+        stage.setScene(scene);
+        stage.setTitle(title);
+        
+        // Window positioning & behavior (skip if fullscreen/maximized)
+        boolean fullscreen = params.size() > 4 && params.get(4).equalsIgnoreCase("true");
+        boolean maximized = params.size() > 5 && params.get(5).equalsIgnoreCase("true");
+        boolean resizable = params.size() > 6 ? !params.get(6).equalsIgnoreCase("false") : true;
+        boolean alwaysOnTop = params.size() > 7 && params.get(7).equalsIgnoreCase("true");
+        double x = params.size() > 8 && !params.get(8).equalsIgnoreCase("center") ? Double.parseDouble(params.get(8)) : -1;
+        double y = params.size() > 9 && !params.get(9).equalsIgnoreCase("center") ? Double.parseDouble(params.get(9)) : -1;
+        
+        stage.setResizable(resizable);
+        stage.setAlwaysOnTop(alwaysOnTop);
+        
+        if (fullscreen) {
+            stage.setFullScreen(true);
+        } else if (maximized) {
+            stage.setMaximized(true);
+        } else {
+            stage.setWidth(width);
+            stage.setHeight(height);
+            if (x >= 0 && y >= 0) {
+                stage.setX(x);
+                stage.setY(y);
+            } else {
+                centerWindow(stage);
+            }
+        }
+        
+        stage.show();
+    }
+    
+    private void centerWindow(Stage stage) {
+        Screen screen = Screen.getPrimary();
+        Rectangle2D bounds = screen.getVisualBounds();
+        stage.setX((bounds.getWidth() - stage.getWidth()) / 2);
+        stage.setY((bounds.getHeight() - stage.getHeight()) / 2);
+    }
+}