commit 6ea9f266f84d12acaf4a0561226c7117a7d60f78
author Jens Nehlmeier <jens.nehlmeier@gmail.com> Sat Mar 28 16:34:08 2015 +0100
committer Colin Alworth <niloc132@gmail.com> Wed Feb 10 21:01:53 2016 +0000
tree 2fe54a52f8573f6aff926ea07f0462d0936dde99
parent 2bceb99612a28642759b88636c169115b7de2509

Emulate Objects.requireNonNull() with message Supplier

Change-Id: Iec8c539a975e853e9f10089aa5a5034a29fe0607

tools/api-checker/config/gwt27_28userApi.conf

diff --git a/tools/api-checker/config/gwt27_28userApi.conf b/tools/api-checker/config/gwt27_28userApi.conf
index ab2c219..5af2a09 100644
--- a/tools/api-checker/config/gwt27_28userApi.conf
+++ b/tools/api-checker/config/gwt27_28userApi.conf
@@ -176,3 +176,6 @@
 
 # Legacy interop removed.
 com.google.gwt.core.client.js MISSING
+
+# Added Objects.requireNonNull(Object, Supplier)
+java.util.Objects::requireNonNull(Ljava/lang/Object;Ljava/lang/String;) OVERLOADED_METHOD_CALL

user/super/com/google/gwt/emul/java/util/Objects.java

diff --git a/user/super/com/google/gwt/emul/java/util/Objects.java b/user/super/com/google/gwt/emul/java/util/Objects.java
index 8780292..50cef14 100644
--- a/user/super/com/google/gwt/emul/java/util/Objects.java
+++ b/user/super/com/google/gwt/emul/java/util/Objects.java
@@ -15,6 +15,8 @@
  */
 package java.util;
 
+import java.util.function.Supplier;
+
 /**
  * See <a
  * href="http://docs.oracle.com/javase/7/docs/api/java/util/Objects.html">the
@@ -114,6 +116,13 @@
     return obj;
   }
 
+  public static <T> T requireNonNull(T obj, Supplier<String> messageSupplier) {
+    if (obj == null) {
+      throw new NullPointerException(messageSupplier.get());
+    }
+    return obj;
+  }
+
   public static String toString(Object o) {
     return String.valueOf(o);
   }