diff --git a/lucene/analysis/common/src/java/org/apache/lucene/analysis/hunspell/Stemmer.java b/lucene/analysis/common/src/java/org/apache/lucene/analysis/hunspell/Stemmer.java
index 5202fb48ef5..9fa84346e16 100644
--- a/lucene/analysis/common/src/java/org/apache/lucene/analysis/hunspell/Stemmer.java
+++ b/lucene/analysis/common/src/java/org/apache/lucene/analysis/hunspell/Stemmer.java
@@ -266,11 +266,11 @@ final class Stemmer {
 
   // some state for traversing FSTs
   final FST.BytesReader prefixReaders[] = new FST.BytesReader[3];
-  @SuppressWarnings("unchecked")
+  @SuppressWarnings({"unchecked","rawtypes"})
   final FST.Arc<IntsRef> prefixArcs[] = new FST.Arc[3];
   
   final FST.BytesReader suffixReaders[] = new FST.BytesReader[3];
-  @SuppressWarnings("unchecked")
+  @SuppressWarnings({"unchecked","rawtypes"})
   final FST.Arc<IntsRef> suffixArcs[] = new FST.Arc[3];
 
   
diff --git a/lucene/classification/src/test/org/apache/lucene/classification/utils/ConfusionMatrixGeneratorTest.java b/lucene/classification/src/test/org/apache/lucene/classification/utils/ConfusionMatrixGeneratorTest.java
index 186876b52b7..b1fe2070a95 100644
--- a/lucene/classification/src/test/org/apache/lucene/classification/utils/ConfusionMatrixGeneratorTest.java
+++ b/lucene/classification/src/test/org/apache/lucene/classification/utils/ConfusionMatrixGeneratorTest.java
@@ -31,7 +31,7 @@ import org.junit.Test;
 /**
  * Tests for {@link ConfusionMatrixGenerator}
  */
-public class ConfusionMatrixGeneratorTest extends ClassificationTestBase {
+public class ConfusionMatrixGeneratorTest extends ClassificationTestBase<Object> {
 
   @Test
   public void testGetConfusionMatrixWithSNB() throws Exception {
diff --git a/lucene/queryparser/src/java/org/apache/lucene/queryparser/surround/query/OrQuery.java b/lucene/queryparser/src/java/org/apache/lucene/queryparser/surround/query/OrQuery.java
index 4f5384737a3..5189218b3e7 100644
--- a/lucene/queryparser/src/java/org/apache/lucene/queryparser/surround/query/OrQuery.java
+++ b/lucene/queryparser/src/java/org/apache/lucene/queryparser/surround/query/OrQuery.java
@@ -40,9 +40,9 @@ public class OrQuery extends ComposedQuery implements DistanceSubQuery {
   
   @Override
   public String distanceSubQueryNotAllowed() {
-    Iterator sqi = getSubQueriesIterator();
+    Iterator<SrndQuery> sqi = getSubQueriesIterator();
     while (sqi.hasNext()) {
-      SrndQuery leq = (SrndQuery) sqi.next();
+      SrndQuery leq = sqi.next();
       if (leq instanceof DistanceSubQuery) {
         String m = ((DistanceSubQuery)leq).distanceSubQueryNotAllowed();
         if (m != null) {
@@ -57,9 +57,10 @@ public class OrQuery extends ComposedQuery implements DistanceSubQuery {
     
   @Override
   public void addSpanQueries(SpanNearClauseFactory sncf) throws IOException {
-    Iterator sqi = getSubQueriesIterator();
+    Iterator<SrndQuery> sqi = getSubQueriesIterator();
     while (sqi.hasNext()) {
-      ((DistanceSubQuery)sqi.next()).addSpanQueries(sncf);
+      SrndQuery s = sqi.next();
+      ((DistanceSubQuery) s).addSpanQueries(sncf);
     }
   }
 }
diff --git a/lucene/queryparser/src/java/org/apache/lucene/queryparser/surround/query/RewriteQuery.java b/lucene/queryparser/src/java/org/apache/lucene/queryparser/surround/query/RewriteQuery.java
index aba4ef84035..df741756593 100644
--- a/lucene/queryparser/src/java/org/apache/lucene/queryparser/surround/query/RewriteQuery.java
+++ b/lucene/queryparser/src/java/org/apache/lucene/queryparser/surround/query/RewriteQuery.java
@@ -61,7 +61,7 @@ abstract class RewriteQuery<SQ extends SrndQuery> extends Query {
       return false;
     if (! getClass().equals(obj.getClass()))
       return false;
-    RewriteQuery other = (RewriteQuery)obj;
+    @SuppressWarnings("unchecked") RewriteQuery<SQ> other = (RewriteQuery<SQ>)obj;
     return super.equals(obj)
       && fieldName.equals(other.fieldName)
       && qf.equals(other.qf)
diff --git a/lucene/queryparser/src/java/org/apache/lucene/queryparser/xml/QueryTemplateManager.java b/lucene/queryparser/src/java/org/apache/lucene/queryparser/xml/QueryTemplateManager.java
index 3abdd27e7cd..d3e5e81ef67 100644
--- a/lucene/queryparser/src/java/org/apache/lucene/queryparser/xml/QueryTemplateManager.java
+++ b/lucene/queryparser/src/java/org/apache/lucene/queryparser/xml/QueryTemplateManager.java
@@ -176,9 +176,9 @@ public class QueryTemplateManager {
     Element root = doc.createElement("Document");
     doc.appendChild(root);
 
-    Enumeration keysEnum = formProperties.keys();
+    Enumeration<?> keysEnum = formProperties.propertyNames();
     while (keysEnum.hasMoreElements()) {
-      String propName = (String) keysEnum.nextElement();
+      String propName = keysEnum.nextElement().toString();
       String value = formProperties.getProperty(propName);
       if ((value != null) && (value.length() > 0)) {
         DOMUtils.insertChild(root, propName, value);
diff --git a/lucene/queryparser/src/test/org/apache/lucene/queryparser/classic/TestQueryParser.java b/lucene/queryparser/src/test/org/apache/lucene/queryparser/classic/TestQueryParser.java
index 9d24e538a4e..efef8fa3d07 100644
--- a/lucene/queryparser/src/test/org/apache/lucene/queryparser/classic/TestQueryParser.java
+++ b/lucene/queryparser/src/test/org/apache/lucene/queryparser/classic/TestQueryParser.java
@@ -156,14 +156,13 @@ public class TestQueryParser extends QueryParserTestBase {
   @SuppressWarnings("rawtype")
   public void testProtectedCtors() throws Exception {
     try {
-      QueryParser.class.getConstructor(new Class[] {CharStream.class});
+      QueryParser.class.getConstructor(CharStream.class);
       fail("please switch public QueryParser(CharStream) to be protected");
     } catch (NoSuchMethodException nsme) {
       // expected
     }
     try {
-      QueryParser.class
-          .getConstructor(new Class[] {QueryParserTokenManager.class});
+      QueryParser.class.getConstructor(QueryParserTokenManager.class);
       fail("please switch public QueryParser(QueryParserTokenManager) to be protected");
     } catch (NoSuchMethodException nsme) {
       // expected