diff --git a/src/ooxml/java/org/apache/poi/extractor/ExtractorFactory.java b/src/ooxml/java/org/apache/poi/extractor/ExtractorFactory.java
index 685d92c84..6c28beb82 100644
--- a/src/ooxml/java/org/apache/poi/extractor/ExtractorFactory.java
+++ b/src/ooxml/java/org/apache/poi/extractor/ExtractorFactory.java
@@ -200,7 +200,6 @@ public class ExtractorFactory {
      * @deprecated Use {@link #createExtractor(DirectoryNode)} instead
      */
     @Deprecated
-    @SuppressWarnings("unused")
     public static POITextExtractor createExtractor(DirectoryNode poifsDir, POIFSFileSystem fs)
             throws IOException, InvalidFormatException, OpenXML4JException, XmlException
     {
diff --git a/src/ooxml/java/org/apache/poi/xslf/extractor/XSLFPowerPointExtractor.java b/src/ooxml/java/org/apache/poi/xslf/extractor/XSLFPowerPointExtractor.java
index 0f9a26fe2..4c3693d3e 100644
--- a/src/ooxml/java/org/apache/poi/xslf/extractor/XSLFPowerPointExtractor.java
+++ b/src/ooxml/java/org/apache/poi/xslf/extractor/XSLFPowerPointExtractor.java
@@ -71,6 +71,7 @@ public class XSLFPowerPointExtractor extends POIXMLTextExtractor {
 			new XSLFPowerPointExtractor(
 					new XSLFSlideShow(args[0]));
 		System.out.println(extractor.getText());
+		extractor.close();
 	}
 
 	/**
diff --git a/src/ooxml/java/org/apache/poi/xssf/dev/XSSFDump.java b/src/ooxml/java/org/apache/poi/xssf/dev/XSSFDump.java
index d1e8ef49b..7e449dad3 100644
--- a/src/ooxml/java/org/apache/poi/xssf/dev/XSSFDump.java
+++ b/src/ooxml/java/org/apache/poi/xssf/dev/XSSFDump.java
@@ -17,14 +17,18 @@
 
 package org.apache.poi.xssf.dev;
 
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.Enumeration;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipFile;
+
 import org.apache.xmlbeans.XmlObject;
 import org.apache.xmlbeans.XmlOptions;
 
-import java.io.*;
-import java.util.zip.ZipFile;
-import java.util.zip.ZipEntry;
-import java.util.Enumeration;
-
 /**
  * Utility class which dumps the contents of a *.xlsx file into file system.
  *
@@ -46,9 +50,9 @@ public final class XSSFDump {
         File root = new File(zipname.substring(0, sep));
         root.mkdir();
 
-        Enumeration en = zip.entries();
+        Enumeration<? extends ZipEntry> en = zip.entries();
         while(en.hasMoreElements()){
-            ZipEntry entry = (ZipEntry)en.nextElement();
+            ZipEntry entry = en.nextElement();
             String name = entry.getName();
             int idx = name.lastIndexOf('/');
             if(idx != -1){
diff --git a/src/ooxml/java/org/apache/poi/xssf/eventusermodel/ReadOnlySharedStringsTable.java b/src/ooxml/java/org/apache/poi/xssf/eventusermodel/ReadOnlySharedStringsTable.java
index 8a4b139ff..a8973dd32 100644
--- a/src/ooxml/java/org/apache/poi/xssf/eventusermodel/ReadOnlySharedStringsTable.java
+++ b/src/ooxml/java/org/apache/poi/xssf/eventusermodel/ReadOnlySharedStringsTable.java
@@ -29,7 +29,6 @@ import org.apache.poi.openxml4j.opc.OPCPackage;
 import org.apache.poi.openxml4j.opc.PackagePart;
 import org.apache.poi.openxml4j.opc.PackageRelationship;
 import org.apache.poi.xssf.usermodel.XSSFRelation;
-import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTRst;
 import org.xml.sax.Attributes;
 import org.xml.sax.InputSource;
 import org.xml.sax.SAXException;