diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index 79c14cc1d94..77211624993 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -195,6 +195,8 @@ Bug Fixes
 * SOLR-8001: Fixed bugs in field(foo,min) and field(foo,max) when some docs have no values
   (David Smiley, hossman)
 
+* SOLR-7978: Fixed example/files update-script.js to be Java 7 and 8 compatible. (Erik Hatcher)
+
 Optimizations
 ----------------------
 
diff --git a/solr/core/src/test-files/solr/collection1/conf/cross-compatible.js b/solr/core/src/test-files/solr/collection1/conf/cross-compatible.js
new file mode 100644
index 00000000000..2fcd6c3baf6
--- /dev/null
+++ b/solr/core/src/test-files/solr/collection1/conf/cross-compatible.js
@@ -0,0 +1,53 @@
+function get_class(name) {
+   var clazz;
+   try {
+     // Java8 Nashorn
+     clazz = eval("Java.type(name).class");
+   } catch(e) {
+     // Java7 Rhino
+     clazz = eval("Packages."+name);
+   }
+
+   return clazz;
+}
+
+function processAdd(cmd) {
+  var doc = cmd.getSolrInputDocument();
+
+  var analyzer =
+       req.getCore().getLatestSchema()
+       .getFieldTypeByName("text")
+       .getIndexAnalyzer();
+
+  var token_stream =
+       analyzer.tokenStream("subject", doc.getFieldValue("subject"));
+
+  var cta_class = get_class("org.apache.lucene.analysis.tokenattributes.CharTermAttribute");
+  var term_att = token_stream.getAttribute(cta_class);
+  token_stream.reset();
+  while (token_stream.incrementToken()) {
+    doc.addField("term_s", term_att.toString());
+  }
+  token_stream.end();
+  token_stream.close();
+
+  return true;
+}
+
+// // //
+
+function processDelete() {
+    // NOOP
+}
+function processCommit() {
+    // NOOP
+}
+function processRollback() {
+    // NOOP
+}
+function processMergeIndexes() {
+    // NOOP
+}
+function finish() {
+    // NOOP
+}
diff --git a/solr/core/src/test-files/solr/collection1/conf/solrconfig-script-updateprocessor.xml b/solr/core/src/test-files/solr/collection1/conf/solrconfig-script-updateprocessor.xml
index 81f4392aaf2..ee3fde8f293 100644
--- a/solr/core/src/test-files/solr/collection1/conf/solrconfig-script-updateprocessor.xml
+++ b/solr/core/src/test-files/solr/collection1/conf/solrconfig-script-updateprocessor.xml
@@ -103,10 +103,17 @@
       <str name="script">throw.error.on.add.updateprocessor.js</str>
     </processor>
   </updateRequestProcessorChain>
+
   <updateRequestProcessorChain name="missing-functions">
     <processor class="solr.StatelessScriptUpdateProcessorFactory">
       <str name="script">missing.functions.updateprocessor.js</str>
     </processor>
   </updateRequestProcessorChain>
 
+  <updateRequestProcessorChain name="javascript-compatibility">
+    <processor class="solr.StatelessScriptUpdateProcessorFactory">
+      <str name="script">cross-compatible.js</str>
+    </processor>
+  </updateRequestProcessorChain>
+
 </config>
diff --git a/solr/core/src/test/org/apache/solr/update/processor/StatelessScriptUpdateProcessorFactoryTest.java b/solr/core/src/test/org/apache/solr/update/processor/StatelessScriptUpdateProcessorFactoryTest.java
index 191f5fc0e41..c785cc6816f 100644
--- a/solr/core/src/test/org/apache/solr/update/processor/StatelessScriptUpdateProcessorFactoryTest.java
+++ b/solr/core/src/test/org/apache/solr/update/processor/StatelessScriptUpdateProcessorFactoryTest.java
@@ -268,4 +268,14 @@ public class StatelessScriptUpdateProcessorFactoryTest extends UpdateProcessorTe
     fail("Did not get exception from script");
   }
 
+  public void testJavaScriptCompatibility() throws Exception  {
+    final String chain = "javascript-compatibility";
+    SolrInputDocument d = processAdd(chain,
+                                 doc(f("id", "5"),
+                                     f("name", " foo "),
+                                     f("subject", "BAR")));
+    assertEquals("bar", d.getFieldValue("term_s"));
+
+  }
+
 }
diff --git a/solr/example/files/conf/update-script.js b/solr/example/files/conf/update-script.js
index 25bfa0360d3..0991c889413 100644
--- a/solr/example/files/conf/update-script.js
+++ b/solr/example/files/conf/update-script.js
@@ -1,6 +1,15 @@
-/*
-  See http://wiki.apache.org/solr/ScriptUpdateProcessor for more details.
-*/
+function get_class(name) {
+  var clazz;
+  try {
+    // Java8 Nashorn
+    clazz = eval("Java.type(name).class");
+  } catch(e) {
+    // Java7 Rhino
+    clazz = eval("Packages."+name);
+  }
+
+  return clazz;
+}
 
 function processAdd(cmd) {
 
@@ -69,9 +78,9 @@ function processAdd(cmd) {
          .getIndexAnalyzer();
 
   var token_stream =
-       analyzer.tokenStream("content", new java.io.StringReader(doc.getFieldValue("content")));
-  var term_att = token_stream.getAttribute(org.apache.lucene.analysis.tokenattributes.CharTermAttribute.class);
-  var type_att = token_stream.getAttribute(org.apache.lucene.analysis.tokenattributes.TypeAttribute.class);
+       analyzer.tokenStream("content", doc.getFieldValue("content"));
+  var term_att = token_stream.getAttribute(get_class("org.apache.lucene.analysis.tokenattributes.CharTermAttribute"));
+  var type_att = token_stream.getAttribute(get_class("org.apache.lucene.analysis.tokenattributes.TypeAttribute"));
   token_stream.reset();
   while (token_stream.incrementToken()) {
     doc.addField(type_att.type().replace(/\<|\>/g,'').toLowerCase()+"_ss", term_att.toString());