Update java version specific rules descriptions

Author: mpaladin

java-checks/src/main/resources/org/sonar/l10n/java/rules/squid/S1602.html

@@ -1,4 +1,9 @@
 <p>There are two ways to write lambdas that contain single statement, but one is definitely more compact and readable than the other.</p>
+
+<p>
+  <em>Note</em> that this rule is automatically disabled when the project's <code>java.source.version</code> is lower than <code>8</code>.
+</p>
+
 <h2>Noncompliant Code Example</h2>
 
 <pre>

java-checks/src/main/resources/org/sonar/l10n/java/rules/squid/S1604.html

@@ -2,9 +2,13 @@
 
 <p>With Java 8, most uses of anonymous inner classes should be replaced by lambdas to highly increase the readability of the source code.</p>
 
+<p>
+  <em>Note</em> that this rule is automatically disabled when the project's <code>java.source.version</code> is lower than <code>8</code>.
+</p>
+
 <h2>Noncompliant Code Example</h2>
 <pre>
-myCollection.map(new Mapper<String,String>() {
+myCollection.map(new Mapper&lt;String,String&gt;() {
   public String map(String input) {
     return new StringBuilder(input).reverse().toString();
   }
@@ -13,5 +17,5 @@ <h2>Noncompliant Code Example</h2>
 
 <h2>Compliant Solution</h2>
 <pre>
-myCollection.map(element -> new StringBuilder(element).reverse().toString());
+myCollection.map(element -&gt; new StringBuilder(element).reverse().toString());
 </pre>

java-checks/src/main/resources/org/sonar/l10n/java/rules/squid/S1609.html

@@ -1,5 +1,10 @@
 <p>A Single Abstract Method (SAM) interface is a Java interface containing only one method. The Java API is full of SAM interfaces, such as <code>java.lang.Runnable</code>, <code>java.awt.event.ActionListener</code>, <code>java.util.Comparator</code> and <code>java.util.concurrent.Callable</code>. SAM interfaces have a special place in Java 8 because they can be implemented using Lambda expressions or Method references. </p>
 <p>Using <code>@FunctionalInterface</code> forces a compile break when an additional, non-overriding abstract method is added to a SAM, which would break the use of Lambda implementations.</p>
+
+<p>
+  <em>Note</em> that this rule is automatically disabled when the project's <code>java.source.version</code> is lower than <code>8</code>.
+</p>
+
 <h2>Noncompliant Code Example</h2>
 
 <pre>

java-checks/src/main/resources/org/sonar/l10n/java/rules/squid/S1610.html

@@ -1,5 +1,9 @@
 <p>With Java 8's "default method" feature, any abstract class without direct or inherited field should be converted into an interface.</p>
 
+<p>
+  <em>Note</em> that this rule is automatically disabled when the project's <code>java.source.version</code> is lower than <code>8</code>.
+</p>
+
 <h2>Noncompliant Code Example</h2>
 <pre>
 public abstract class Car {
@@ -20,4 +24,4 @@ <h2>Compliant Solution</h2>
     c.freeze(this);
   }
 }
-</pre>
+</pre>

java-checks/src/main/resources/org/sonar/l10n/java/rules/squid/S1611.html

@@ -1,5 +1,9 @@
 <p>There are two possible syntaxes for a lambda having only one input parameter with an inferred type: with and without parentheses around that single parameter. The simpler syntax, without parentheses, is more compact and readable than the one with parentheses, and is therefore preferred.</p>
 
+<p>
+  <em>Note</em> that this rule is automatically disabled when the project's <code>java.source.version</code> is lower than <code>8</code>.
+</p>
+
 <h2>Noncompliant Code Example</h2>
 <pre>
 (x) -> x * 2

java-checks/src/main/resources/org/sonar/l10n/java/rules/squid/S1612.html

@@ -1,5 +1,9 @@
 <p>Method/constructor references are more compact and readable than using lambdas, and are therefore preferred.</p>
 
+<p>
+  <em>Note</em> that this rule is automatically disabled when the project's <code>java.source.version</code> is lower than <code>8</code>.
+</p>
+
 <h2>Noncompliant Code Example</h2>
 <pre>
   List<Integer> list = new ArrayList<Integer>();
@@ -18,4 +22,4 @@ <h2>Compliant Solution</h2>
   list.add(2);
 
   list.forEach(System.out::println);
-</pre>
+</pre>

java-checks/src/main/resources/org/sonar/l10n/java/rules/squid/S1710.html

@@ -1,5 +1,9 @@
 <p>Before Java 8 if you needed to use multiple instances of the same annotation, they had to be wrapped in a container annotation. With Java 8, that's no longer necessary, allowing for cleaner, more readable code.</p>
 
+<p>
+  <em>Note</em> that this rule is automatically disabled when the project's <code>java.source.version</code> is lower than <code>8</code>.
+</p>
+
 <h2>Noncompliant Code Example</h2>
 <pre>
 @SomeAnnotations({

java-checks/src/main/resources/org/sonar/l10n/java/rules/squid/S2293.html

@@ -1,4 +1,9 @@
 <p>Java 7 introduced the diamond operator (<code>&lt;&gt;</code>) to reduce the verbosity of generics code. For instance, instead of having to declare a <code>List</code>'s type in both its declaration and its constructor, you can now simplify the constructor declaration with <code>&lt;&gt;</code>, and the compiler will infer the type.</p>
+
+<p>
+  <em>Note</em> that this rule is automatically disabled when the project's <code>java.source.version</code> is lower than <code>7</code>.
+</p>
+
 <h2>Noncompliant Code Example</h2>
 
 <pre>

java-checks/src/main/resources/org/sonar/l10n/java/rules/squid/S2718.html

@@ -1,5 +1,9 @@
 <p>The use of the <code>Instant</code> class introduced in Java 8 to truncate a date can be significantly faster than the <code>DateUtils</code> class from Commons Lang.</p>
 
+<p>
+  <em>Note</em> that this rule is automatically disabled when the project's <code>java.source.version</code> is lower than <code>8</code>.
+</p>
+
 <h2>Noncompliant Code Example</h2>
 
 <pre>
@@ -16,4 +20,4 @@ <h2>Compliant Solution</h2>
   instant = instant.truncatedTo(ChronoUnit.SECONDS);
   return Date.from(instant);
 }
-</pre>
+</pre>

java-checks/src/main/resources/org/sonar/l10n/java/rules/squid/S2976.html

@@ -10,6 +10,10 @@
   <li>call <code>mkdir</code> on the File object</li>
 </ul>
 
+<p>
+  <em>Note</em> that this rule is automatically disabled when the project's <code>java.source.version</code> is lower than <code>7</code>.
+</p>
+
 <h2>Noncompliant Code Example</h2>
 <pre>
 File tempDir;