Java: add more qhelp references and add 'override' to example

Author: Jami Cogswell

java/ql/src/Likely Bugs/Concurrency/CallsToRunnableRun.java

@@ -9,6 +9,7 @@ public static void main(String args[]) {
 }
 
 class NewThread extends Thread {
+    @Override
     public void run() {
         try {
             Thread.sleep(10000);
@@ -18,4 +19,4 @@ public void run() {
         }
         System.out.println("Child thread activity.");
     }
-}
+}

java/ql/src/Likely Bugs/Concurrency/CallsToRunnableRun.qhelp

@@ -7,37 +7,37 @@
 <overview>
 <p>A direct call of a <code>Thread</code> object's <code>run</code> method
 does not start a separate thread. The method is executed within the current thread.
-This is an unusual use because <code>Thread.run()</code> is normally 
-intended to be called from within a separate thread. 
+This is an unusual use because <code>Thread.run()</code> is normally
+intended to be called from within a separate thread.
 </p>
 
 </overview>
 <recommendation>
 
-<p>To execute <code>Runnable.run</code> from within a separate thread, do one of the 
+<p>To execute <code>Runnable.run</code> from within a separate thread, do one of the
 following:</p>
 
 <ul>
-    <li>Construct a <code>Thread</code> object using the <code>Runnable</code> object, and call 
+    <li>Construct a <code>Thread</code> object using the <code>Runnable</code> object, and call
     <code>start</code> on the <code>Thread</code> object.</li>
-    <li>Define a subclass of a <code>Thread</code> object, and override the definition of its 
+    <li>Define a subclass of a <code>Thread</code> object, and override the definition of its
     <code>run</code> method. Then construct an instance of this subclass and call <code>start</code>
     on that instance directly.</li>
 </ul>
 
 </recommendation>
 <example>
 
-<p>In the following example, the main thread, <code>ThreadDemo</code>, calls the child thread, 
+<p>In the following example, the main thread, <code>ThreadDemo</code>, calls the child thread,
 <code>NewThread</code>, using <code>run</code>. This causes the child thread to run to
-completion before the rest of the main thread is executed, so that "Child thread activity" is 
+completion before the rest of the main thread is executed, so that "Child thread activity" is
 printed before "Main thread activity".</p>
 
 <sample src="CallsToRunnableRun.java" />
 
-<p>To enable the two threads to run concurrently, create the child thread and call 
+<p>To enable the two threads to run concurrently, create the child thread and call
 <code>start</code>, as shown below. This causes the main thread to
-continue while the child thread is waiting, so that "Main thread activity" is printed before 
+continue while the child thread is waiting, so that "Main thread activity" is printed before
 "Child thread activity".</p>
 
 <sample src="CallsToRunnableRunFixed.java" />
@@ -48,6 +48,8 @@ continue while the child thread is waiting, so that "Main thread activity" is pr
 
 <li>
   The Java Tutorials: <a href="https://docs.oracle.com/javase/tutorial/essential/concurrency/runthread.html">Defining and Starting a Thread</a>.
+  Java API Specification: <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Thread.html#run()">Thread.run()</a>.
+  SEI CERT Oracle Coding Standard for Java: <a href="https://wiki.sei.cmu.edu/confluence/display/java/THI00-J.+Do+not+invoke+Thread.run()">THI00-J. Do not invoke Thread.run()</a>.
 </li>