+act #19085 adds Java API ByteString#createBuilder

.java-version

@@ -1 +1 @@
-1.6
+1.8

akka-actor-tests/src/test/java/akka/util/ByteStringTest.java

@@ -0,0 +1,27 @@
+/**
+ * Copyright (C) 2009-2015 Typesafe Inc. <http://www.typesafe.com>
+ */
+package akka.util;
+
+import org.junit.Test;
+import scala.concurrent.duration.Duration;
+
+import static junit.framework.TestCase.assertEquals;
+
+public class ByteStringTest {
+
+  @Test
+  public void testCreation() {
+    final ByteString s1 = ByteString.fromString("");
+    final ByteString s2 = ByteString.fromInts(1, 2, 3);
+  }
+
+  @Test
+  public void testBuilderCreation() {
+    final ByteStringBuilder sb = ByteString.createBuilder();
+    sb.append(ByteString.fromString("Hello"));
+    sb.append(ByteString.fromString("World"));
+    assertEquals(ByteString.fromString("Hello World"), sb.result());
+  }
+
+}

akka-actor/src/main/scala/akka/util/ByteString.scala

@@ -93,6 +93,9 @@ object ByteString {
 
   def newBuilder: ByteStringBuilder = new ByteStringBuilder
 
+  /** Java API */
+  def createBuilder: ByteStringBuilder = new ByteStringBuilder
+
   implicit val canBuildFrom: CanBuildFrom[TraversableOnce[Byte], Byte, ByteString] =
     new CanBuildFrom[TraversableOnce[Byte], Byte, ByteString] {
       def apply(ignore: TraversableOnce[Byte]): ByteStringBuilder = newBuilder