coparing arrays for beginners

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java

@@ -23,12 +23,7 @@ import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.nio.file.StandardOpenOption;
 import java.text.SimpleDateFormat;
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Scanner;
+import java.util.*;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -117,7 +112,7 @@ public class ZUGFeRDImporter {
 		pdfStream.read(pad);
 		pdfStream.reset();
 		byte[] pdfSignature = {'%', 'P', 'D', 'F'};
-		if (pad.equals(pdfSignature)) { // we have a pdf
+		if (Arrays.equals(pad, pdfSignature)) { // we have a pdf
 
 
 			try (PDDocument doc = PDDocument.load(pdfStream)) {
@@ -221,8 +216,6 @@ public class ZUGFeRDImporter {
 	}
 
 
-
-
 	protected String extractString(String xpathStr) {
 		if (!containsMeta) {
 			throw new ZUGFeRDExportException("No suitable data/ZUGFeRD file could be found.");
@@ -365,6 +358,7 @@ public class ZUGFeRDImporter {
 				"//*[local-name() = 'StartDateTime']//*[local-name() = 'DateTimeString']");
 		return tryDate(toParse);
 	}
+
 	public Date getDetailedDeliveryPeriodTo() {
 		final String toParse = extractString(
 			"//*[local-name() = 'ApplicableHeaderTradeSettlement']" +
@@ -480,7 +474,9 @@ public class ZUGFeRDImporter {
 	 */
 	public String getBuyerTradePartyName() {
 		return extractString("//*[local-name() = 'BuyerTradeParty']//*[local-name() = 'Name']");
-	}	/**
+	}
+
+	/**
 	 * @return the BuyerTradeParty Name
 	 */
 	public String getDeliveryTradePartyName() {
@@ -488,7 +484,6 @@ public class ZUGFeRDImporter {
 	}
 
 
-
 	/**
 	 * @return the line Total Amount
 	 */
@@ -545,7 +540,6 @@ public class ZUGFeRDImporter {
 	}
 
 
-
 	/**
 	 * @return the document code
 	 */
@@ -697,6 +691,7 @@ public class ZUGFeRDImporter {
 		throw new Exception("ZUGFeRD version could not be determined");
 
 	}
+
 	public int getVersion() throws Exception {
 		if (!containsMeta) {
 			throw new Exception("Not yet parsed");
@@ -713,8 +708,7 @@ public class ZUGFeRDImporter {
 			version = 1;
 		} else if (head.contains("<rsm:CrossIndustryInvoice")) {
 			version = 2;
-		}
-		else {
+		} else {
 			throw new Exception("ZUGFeRD version could not be determined");
 		}
 		return version;
@@ -784,6 +778,7 @@ public class ZUGFeRDImporter {
 
 	/**
 	 * returns an instance of PostalTradeAddress for SellerTradeParty section
+	 *
 	 * @return an instance of PostalTradeAddress
 	 */
 	public PostalTradeAddress getBuyerTradePartyAddress() {
@@ -806,6 +801,7 @@ public class ZUGFeRDImporter {
 
 	/**
 	 * returns an instance of PostalTradeAddress for SellerTradeParty section
+	 *
 	 * @return an instance of PostalTradeAddress
 	 */
 	public PostalTradeAddress getSellerTradePartyAddress() {
@@ -827,6 +823,7 @@ public class ZUGFeRDImporter {
 
 	/**
 	 * returns an instance of PostalTradeAddress for ShipToTradeParty section
+	 *
 	 * @return an instance of PostalTradeAddress
 	 */
 	public PostalTradeAddress getDeliveryTradePartyAddress() {
@@ -910,6 +907,7 @@ public class ZUGFeRDImporter {
 
 	/**
 	 * returns a list of LineItems
+	 *
 	 * @return a List of LineItem instances
 	 */
 	public List<Item> getLineItemList() {
@@ -1041,6 +1039,7 @@ public class ZUGFeRDImporter {
 
 	/**
 	 * returns a List of LineItem Nodes from ZUGFeRD XML
+	 *
 	 * @return a List of Node instances
 	 */
 	public List<Node> getLineItemNodes() {
@@ -1062,6 +1061,7 @@ public class ZUGFeRDImporter {
 
 	/**
 	 * Returns a node, found by name. If more nodes with the same name are present, the first occurence will be returned
+	 *
 	 * @param nl   - A NodeList which may contains the searched node
 	 * @param name The nodes name
 	 * @return a Node or null, if nothing is found
@@ -1082,6 +1082,7 @@ public class ZUGFeRDImporter {
 
 	/**
 	 * Get a NodeList by providing an path
+	 *
 	 * @param path a compliable Path
 	 * @return a Nodelist or null, if an error occurs
 	 */
@@ -1102,6 +1103,7 @@ public class ZUGFeRDImporter {
 
 	/**
 	 * returns the value of an node
+	 *
 	 * @param node the Node to get the value from
 	 * @return A String or empty String, if no value was found
 	 */
@@ -1114,6 +1116,7 @@ public class ZUGFeRDImporter {
 
 	/**
 	 * tries to convert an String to BigDecimal.
+	 *
 	 * @param nodeValue The value as String
 	 * @return a BigDecimal with the value provides as String or a BigDecimal with value 0.00 if an error occurs
 	 */
@@ -1128,6 +1131,7 @@ public class ZUGFeRDImporter {
 			}
 		}
 	}
+
 	private Date tryDate(Node node) {
 		final String nodeValue = getNodeValue(node);
 		if (nodeValue.isEmpty()) {