Update documentation

TRAVIS_JOB_NUMBER=3294.1
TRAVIS_COMMIT_RANGE=0424a45a4b03...f21851808992

docs/pages/pmd/rules/java.md

@@ -297,7 +297,8 @@ folder: pmd/rules
 *   [DontCallThreadRun](pmd_rules_java_multithreading.html#dontcallthreadrun): Explicitly calling Thread.run() method will execute in the caller's thread of control.  Instead, ...
 *   [DoubleCheckedLocking](pmd_rules_java_multithreading.html#doublecheckedlocking): Partially created objects can be returned by the Double Checked Locking pattern when used in Java...
 *   [NonThreadSafeSingleton](pmd_rules_java_multithreading.html#nonthreadsafesingleton): Non-thread safe singletons can result in bad state changes. Eliminatestatic singletons if possibl...
-*   [UnsynchronizedStaticDateFormatter](pmd_rules_java_multithreading.html#unsynchronizedstaticdateformatter): SimpleDateFormat instances are not synchronized. Sun recommends using separate format instancesfo...
+*   [UnsynchronizedStaticDateFormatter](pmd_rules_java_multithreading.html#unsynchronizedstaticdateformatter): <span style="border-radius: 0.25em; color: #fff; padding: 0.2em 0.6em 0.3em; display: inline; background-color: #d9534f; font-size: 75%;">Deprecated</span> SimpleDateFormat instances are not synchronized. Sun recommends using separate format instancesfo...
+*   [UnsynchronizedStaticFormatter](pmd_rules_java_multithreading.html#unsynchronizedstaticformatter): Instances of 'java.text.Format' are generally not synchronized.Sun recommends using separate form...
 *   [UseConcurrentHashMap](pmd_rules_java_multithreading.html#useconcurrenthashmap): Since Java5 brought a new implementation of the Map designed for multi-threaded access, you canpe...
 *   [UseNotifyAllInsteadOfNotify](pmd_rules_java_multithreading.html#usenotifyallinsteadofnotify): Thread.notify() awakens a thread monitoring the object. If more than one thread is monitoring, th...
 

docs/pages/pmd/rules/java/multithreading.md

@@ -5,7 +5,7 @@ permalink: pmd_rules_java_multithreading.html
 folder: pmd/rules/java
 sidebaractiveurl: /pmd_rules_java.html
 editmepath: ../pmd-java/src/main/resources/category/java/multithreading.xml
-keywords: Multithreading, AvoidSynchronizedAtMethodLevel, AvoidThreadGroup, AvoidUsingVolatile, DoNotUseThreads, DontCallThreadRun, DoubleCheckedLocking, NonThreadSafeSingleton, UnsynchronizedStaticDateFormatter, UseConcurrentHashMap, UseNotifyAllInsteadOfNotify
+keywords: Multithreading, AvoidSynchronizedAtMethodLevel, AvoidThreadGroup, AvoidUsingVolatile, DoNotUseThreads, DontCallThreadRun, DoubleCheckedLocking, NonThreadSafeSingleton, UnsynchronizedStaticDateFormatter, UnsynchronizedStaticFormatter, UseConcurrentHashMap, UseNotifyAllInsteadOfNotify
 language: Java
 ---
 <!-- DO NOT EDIT THIS FILE. This file is generated from file ../pmd-java/src/main/resources/category/java/multithreading.xml. -->
@@ -275,6 +275,8 @@ public static Foo getFoo() {
 
 ## UnsynchronizedStaticDateFormatter
 
+<span style="border-radius: 0.25em; color: #fff; padding: 0.2em 0.6em 0.3em; display: inline; background-color: #d9534f;">Deprecated</span> 
+
 **Since:** PMD 3.6
 
 **Priority:** Medium (3)
@@ -283,6 +285,8 @@ SimpleDateFormat instances are not synchronized. Sun recommends using separate f
 for each thread. If multiple threads must access a static formatter, the formatter must be
 synchronized either on method or block level.
 
+This rule has been deprecated in favor of the rule {% rule UnsynchronizedStaticFormatter %}.
+
 **This rule is defined by the following Java class:** [net.sourceforge.pmd.lang.java.rule.multithreading.UnsynchronizedStaticDateFormatterRule](https://github.com/pmd/pmd/blob/master/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/multithreading/UnsynchronizedStaticDateFormatterRule.java)
 
 **Example(s):**
@@ -304,6 +308,38 @@ public class Foo {
 <rule ref="category/java/multithreading.xml/UnsynchronizedStaticDateFormatter" />
 ```
 
+## UnsynchronizedStaticFormatter
+
+**Since:** PMD 6.11.0
+
+**Priority:** Medium (3)
+
+Instances of `java.text.Format` are generally not synchronized.
+Sun recommends using separate format instances for each thread.
+If multiple threads must access a static formatter, the formatter must be
+synchronized either on method or block level.
+
+**This rule is defined by the following Java class:** [net.sourceforge.pmd.lang.java.rule.multithreading.UnsynchronizedStaticFormatterRule](https://github.com/pmd/pmd/blob/master/pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/multithreading/UnsynchronizedStaticFormatterRule.java)
+
+**Example(s):**
+
+``` java
+public class Foo {
+    private static final SimpleDateFormat sdf = new SimpleDateFormat();
+    void bar() {
+        sdf.format(); // poor, no thread-safety
+    }
+    synchronized void foo() {
+        sdf.format(); // preferred
+    }
+}
+```
+
+**Use this rule by referencing it:**
+``` xml
+<rule ref="category/java/multithreading.xml/UnsynchronizedStaticFormatter" />
+```
+
 ## UseConcurrentHashMap
 
 **Since:** PMD 4.2.6