diff --git a/FileManipulator.java b/FileManipulator.java
new file mode 100644
index 0000000..3182794
--- /dev/null
+++ b/FileManipulator.java
@@ -0,0 +1,53 @@
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystems;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Enumeration;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipFile;
+
+public class FileManipulator {
+
+    private String fileName; // file which will be extracted from
+    private String extractionPath; // temporary path where the file will be extracted to
+
+    public FileManipulator(String fileName, String extractionPath) {
+        this.fileName = fileName;
+        this.extractionPath = extractionPath;
+    }
+
+    public void extractFile(String targetFile) throws Exception {
+        File outputLocation = new File(extractionPath, targetFile);
+
+        // path to the file the file will be extracted from
+        Path zipFile = Paths.get(fileName);
+
+        // load zip file as filesystem
+        FileSystem fileSystem = FileSystems.newFileSystem(zipFile, null);
+
+        Path source = fileSystem.getPath("ppt/" + targetFile); // location of targetFile inside the zip file
+
+        Files.copy(source, outputLocation.toPath());
+    }
+
+    public void insertFile(String targetFile) throws Exception {
+      Path myFilePath = Paths.get(targetFile);
+  
+      Path zipFilePath = Paths.get(this.fileName);
+      try( FileSystem fs = FileSystems.newFileSystem(zipFilePath, null) ){
+          Path fileInsideZipPath = fs.getPath("/ppt/" + targetFile);
+          Files.delete(fileInsideZipPath);
+          Files.copy(myFilePath, fileInsideZipPath);
+          
+      } catch (IOException e) {
+          e.printStackTrace();
+      }
+    }
+
+}
\ No newline at end of file