Merge pull request #360 from habibasorour/issue_351

Issue 351 fixed: Added listing

Author: pearcej

source/ch9_commonmistakes.ptx

@@ -63,6 +63,7 @@
         <p>
             A common mistake in Java is to forget that every statement must end with a semicolon (<c>;</c>).
         </p>
+        <listing xml:id="semicolon-error">
         <program language="java" interactive="activecode" line-numbers="yes">
             <code>
             // Histo.java
@@ -77,8 +78,9 @@
             }//End of class
         </code>
         </program>
+        </listing>
         <p>
-            The error "';' expected" on line 7 of <c>Histo.java</c> means that a semicolon is missing at the end of the statement <c>Scanner data = null</c>. In Java, every statement must be terminated with a semicolon (<c>;</c>) to indicate its completion. The arrow points to <c>null</c> because that's where the compiler expected to find the semicolon.
+            The error "';' expected" on line 7 of <c>Histo.java</c> in <xref ref="semicolon-error" text="type-global"/> means that a semicolon is missing at the end of the statement <c>Scanner data = null</c>. In Java, every statement must be terminated with a semicolon (<c>;</c>) to indicate its completion. The arrow points to <c>null</c> because that's where the compiler expected to find the semicolon.
         </p>
 
     </section>