checkstyle.xml: +7 modules

Author: stephengold

config/checkstyle/checkstyle.xml

@@ -13,6 +13,10 @@
     <!-- See https://checkstyle.org/checks/javadoc/javadocpackage.html -->
     <module name="JavadocPackage"/>
 
+    <!-- Miscellaneous checks:                  -->
+    <!-- See https://checkstyle.org/checks/misc -->
+    <module name="NewlineAtEndOfFile"/>
+
     <!-- Regexp checks:                           -->
     <!-- See https://checkstyle.org/checks/regexp -->
     <module name="RegexpSingleline">
@@ -98,10 +102,18 @@
 
         <!-- Checks for common coding problems:       -->
         <!-- See https://checkstyle.org/checks/coding -->
+        <module name="AvoidDoubleBraceInitialization"/>
+        <module name="AvoidNoArgumentSuperConstructorCall"/>
+        <module name="DefaultComesLast"/>
         <module name="EmptyStatement"/>
         <module name="EqualsHashCode"/>
         <module name="FallThrough"/>
+        <module name="HiddenField">
+            <property name="tokens" value="VARIABLE_DEF"/>
+        </module>
+        <module name="IllegalCatch"/>
         <module name="IllegalInstantiation"/>
+        <module name="IllegalThrows"/>
         <module name="IllegalToken">
             <property name="tokens" value="POST_DEC, POST_INC, STATIC_IMPORT"/>
         </module>