Added serialVersionUID field in Serializable objects of module kernel.

Author: IdamkinI

kernel/src/main/java/com/itextpdf/kernel/events/EventDispatcher.java

@@ -12,6 +12,9 @@
  */
 public class EventDispatcher implements IEventDispatcher, Serializable {
 
+    private static final long serialVersionUID = -6701670578690210618L;
+
+
     protected Map<String, List<IEventHandler>> eventHandlers = new HashMap<>();
 
     @Override

kernel/src/main/java/com/itextpdf/kernel/font/PdfFont.java

@@ -23,7 +23,9 @@
 
 public abstract class PdfFont extends PdfObjectWrapper<PdfDictionary> {
 
-    protected static final byte[] emptyBytes = new byte[0];
+    private static final long serialVersionUID = -7661159455613720321L;
+
+	protected static final byte[] emptyBytes = new byte[0];
 
     Map<Integer, Glyph> notdefGlyphs = new HashMap<>();
 

kernel/src/main/java/com/itextpdf/kernel/font/PdfSimpleFont.java

@@ -21,7 +21,9 @@
 
 public abstract class PdfSimpleFont<T extends FontProgram> extends PdfFont {
 
-    protected T fontProgram;
+    private static final long serialVersionUID = -4942318223894676176L;
+
+	protected T fontProgram;
 
     protected FontEncoding fontEncoding;
 

kernel/src/main/java/com/itextpdf/kernel/font/PdfTrueTypeFont.java

@@ -24,7 +24,9 @@
  */
 public class PdfTrueTypeFont extends PdfSimpleFont<TrueTypeFont> {
 
-    PdfTrueTypeFont(TrueTypeFont ttf, String encoding, boolean embedded) {
+    private static final long serialVersionUID = -8152778382960290571L;
+
+	PdfTrueTypeFont(TrueTypeFont ttf, String encoding, boolean embedded) {
         super();
         setFontProgram(ttf);
         this.embedded = embedded;

kernel/src/main/java/com/itextpdf/kernel/font/PdfType0Font.java

@@ -42,7 +42,9 @@
 
 public class PdfType0Font extends PdfSimpleFont<FontProgram> {
 
-    private static final byte[] rotbits = {(byte) 0x80, (byte) 0x40, (byte) 0x20, (byte) 0x10, (byte) 0x08, (byte) 0x04, (byte) 0x02, (byte) 0x01};
+    private static final long serialVersionUID = -8033620300884193397L;
+
+	private static final byte[] rotbits = {(byte) 0x80, (byte) 0x40, (byte) 0x20, (byte) 0x10, (byte) 0x08, (byte) 0x04, (byte) 0x02, (byte) 0x01};
 
     protected static final int CidFontType0 = 0;
     protected static final int CidFontType2 = 2;

kernel/src/main/java/com/itextpdf/kernel/font/PdfType1Font.java

@@ -11,7 +11,9 @@
 
 public class PdfType1Font extends PdfSimpleFont<Type1Font> {
 
-    PdfType1Font(Type1Font type1Font, String encoding, boolean embedded) {
+    private static final long serialVersionUID = 7009919945291639441L;
+
+	PdfType1Font(Type1Font type1Font, String encoding, boolean embedded) {
         super();
         setFontProgram(type1Font);
         this.embedded = embedded && !type1Font.isBuiltInFont();

kernel/src/main/java/com/itextpdf/kernel/font/PdfType3Font.java

@@ -25,7 +25,8 @@
  */
 public class PdfType3Font extends PdfSimpleFont<Type3FontProgram> {
 
-    private double[] fontMatrix = {0.001, 0, 0, 0.001, 0, 0};
+    private static final long serialVersionUID = 4940119184993066859L;
+	private double[] fontMatrix = {0.001, 0, 0, 0.001, 0, 0};
 
     /**
      * Creates a Type3 font.

kernel/src/main/java/com/itextpdf/kernel/geom/PageSize.java

@@ -1,7 +1,11 @@
 package com.itextpdf.kernel.geom;
 
+import java.io.Serializable;
+
 public class PageSize extends Rectangle {
 
+    private static final long serialVersionUID = 485375591249386160L;
+
     static public PageSize A0 = new PageSize(2384, 3370);
     static public PageSize A1 = new PageSize(1684, 2384);
     static public PageSize A2 = new PageSize(1190, 1684);

kernel/src/main/java/com/itextpdf/kernel/geom/Rectangle.java

@@ -6,6 +6,8 @@
 
 public class Rectangle implements Cloneable, Serializable {
 
+    private static final long serialVersionUID = 8025677415569233446L;
+
     protected float x;
     protected float y;
     protected float width;

kernel/src/main/java/com/itextpdf/kernel/pdf/PdfArray.java

@@ -15,6 +15,8 @@
  */
 public class PdfArray extends PdfObject implements Collection<PdfObject> {
 
+    private static final long serialVersionUID = 1617495612878046869L;
+	
     private List<PdfObject> list;
 
     /**