isExistSecurityElement() check

FileManipulator.java

@@ -1,3 +1,4 @@
+
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
 import java.io.File;
@@ -37,17 +38,17 @@ public void extractFile(String targetFile) throws Exception {
  }
 
  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();
- }
+  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();
+  }
  }
 
-}
+}

XMLParser.java

@@ -1,27 +1,28 @@
+
 import java.io.File;
 import java.io.FileInputStream;
-
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.transform.Transformer;
 import javax.xml.transform.TransformerFactory;
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.stream.StreamResult;
-
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
 
-
 public class XMLParser {
 
  private final String TARGET_ELEMENT = "p:modifyVerifier"; // hashed password element
  private String filePath;
+ private Element securityElement;
 
  private Document document;
 
  public XMLParser(String filePath) throws Exception {
  this.filePath = filePath;
  this.document = XMLFileToDocument();
+ // get the element TARGET_ELEMENT (the hashed password element):
+ this.securityElement = (Element) document.getElementsByTagName(TARGET_ELEMENT).item(0);
  }
 
  public Document XMLFileToDocument() throws Exception {
@@ -31,26 +32,25 @@ public Document XMLFileToDocument() throws Exception {
  }
 
  public void removeElementOfSecurity() {
- // get the element TARGET_ELEMENT (the hashed password element):
- Element element = (Element) document.getElementsByTagName(TARGET_ELEMENT).item(0);
-
  // remove the node:
- if (element != null) // if element == null it means there is no hashed pass
- {
- element.getParentNode().removeChild(element);
+ if (this.securityElement != null) { // if element == null it means there is no hashed pass
+ this.securityElement.getParentNode().removeChild(this.securityElement);
  }
-
  }
 
  public void writeToXMLFile(String newFilePath) throws Exception {
  // create transformer from document to xml file:
  TransformerFactory transformerFactory = TransformerFactory.newInstance();
  Transformer transformer = transformerFactory.newTransformer();
  DOMSource dom = new DOMSource(this.document);
- // new file:
  StreamResult streamResult = new StreamResult(new File(newFilePath));
 
- // transform the XML source to a file:
+ // transform the XML source to file:
  transformer.transform(dom, streamResult);
  }
+
+ public boolean isExistSecurityElement() {
+ // if the element was returned as null during instantiation, it means it doesn't exist
+ return (this.securityElement != null);
+ }
 }