make Dokka happy by sorting imports of Java classes

libraries/stdlib/src/kotlin/collections/MapsJVM.kt

@@ -2,9 +2,9 @@ package kotlin
 
 import java.util.Comparator
 import java.util.LinkedHashMap
+import java.util.Properties
 import java.util.SortedMap
 import java.util.TreeMap
-import java.util.Properties
 
 /**
  * Allows to use the index operator for storing values in a mutable map.

libraries/stdlib/src/kotlin/concurrent/Timer.kt

@@ -1,8 +1,8 @@
 package kotlin.concurrent
 
+import java.util.Date
 import java.util.Timer
 import java.util.TimerTask
-import java.util.Date
 
 /**
  * Schedules an [action] to be executed after the specified [delay] (expressed in milliseconds).

libraries/stdlib/src/kotlin/math/JMath.kt

@@ -1,7 +1,7 @@
 package kotlin.math
 
-import java.math.BigInteger
 import java.math.BigDecimal
+import java.math.BigInteger
 
 /**
  * Enables the use of the `+` operator for [BigInteger] instances.

libraries/stdlib/src/kotlin/util/StandardJVM.kt

@@ -1,7 +1,7 @@
 package kotlin
 
-import java.io.PrintWriter
 import java.io.PrintStream
+import java.io.PrintWriter
 
 /**
  * Allows a stack trace to be printed from Kotlin's [Throwable].