minor fixes

app/src/main/java/com/example/app/MainActivity.java

 package com.example.app;
 
+import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.os.Bundle;
-import android.view.Menu;
-import android.view.MenuItem;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
@@ -12,12 +11,13 @@ public class MainActivity extends Activity {
 
     private WebView mWebView;
 
+    @SuppressLint("SetJavaScriptEnabled")
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        mWebView = (WebView) findViewById(R.id.activity_main_webview);
+        mWebView = findViewById(R.id.activity_main_webview);
 
         // Force links and redirects to open in the WebView instead of in a browser
         mWebView.setWebViewClient(new WebViewClient());

app/src/main/java/com/example/app/MyWebViewClient.java

@@ -5,11 +5,13 @@ import android.net.Uri;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 
-public class MyWebViewClient extends WebViewClient {
+import java.util.Objects;
+
+class MyWebViewClient extends WebViewClient {
 
     @Override
     public boolean shouldOverrideUrlLoading(WebView view, String url) {
-        if (Uri.parse(url).getHost().endsWith("example.com")) {
+        if (Objects.requireNonNull(Uri.parse(url).getHost()).endsWith("example.com")) {
             return false;
         }