Implement Serializable for a few new classes

Author: Snipx

io/src/main/java/com/itextpdf/io/font/FontEncoding.java

@@ -3,9 +3,12 @@
 import com.itextpdf.io.util.IntHashtable;
 import com.itextpdf.io.util.Utilities;
 
+import java.io.Serializable;
 import java.util.StringTokenizer;
 
-public class FontEncoding {
+public class FontEncoding implements Serializable {
+
+    private static final long serialVersionUID = -684967385759439083L;
 
     private static final byte[] emptyBytes = new byte[0];
 

io/src/main/java/com/itextpdf/io/font/FontIdentification.java

@@ -1,6 +1,10 @@
 package com.itextpdf.io.font;
 
-public class FontIdentification {
+import java.io.Serializable;
+
+public class FontIdentification implements Serializable {
+
+    private static final long serialVersionUID = -6017656004487895604L;
 
     // name ID 5
     private String ttfVersion;

io/src/main/java/com/itextpdf/io/font/FontMetrics.java

@@ -1,6 +1,10 @@
 package com.itextpdf.io.font;
 
-public class FontMetrics {
+import java.io.Serializable;
+
+public class FontMetrics implements Serializable {
+
+    private static final long serialVersionUID = -7113134666493365588L;
 
     protected float normalizationCoef = 1f;
 

io/src/main/java/com/itextpdf/io/font/FontNames.java

@@ -1,9 +1,12 @@
 package com.itextpdf.io.font;
 
+import java.io.Serializable;
 import java.util.List;
 import java.util.Map;
 
-public class FontNames {
+public class FontNames implements Serializable {
+
+    private static final long serialVersionUID = 1005168842463622025L;
 
     //macStyle bits
     // Bit 0: Bold (if set to 1);

io/src/main/java/com/itextpdf/io/font/FontProgram.java

@@ -4,10 +4,13 @@
 import com.itextpdf.io.font.otf.Glyph;
 
 import java.io.File;
+import java.io.Serializable;
 import java.util.HashMap;
 import java.util.Map;
 
-public abstract class FontProgram {
+public abstract class FontProgram implements Serializable {
+
+    private static final long serialVersionUID = -3488910249070253659L;
 
     public static final int DEFAULT_WIDTH = 1000;
     public static final int UNITS_NORMALIZATION = 1000;

io/src/main/java/com/itextpdf/io/font/Type1Font.java

@@ -14,6 +14,8 @@
 
 public class Type1Font extends FontProgram {
 
+    private static final long serialVersionUID = -1078208220942939920L;
+
     private Type1Parser fontParser;
 
     private String characterSet;

io/src/main/java/com/itextpdf/io/font/Type1Parser.java

@@ -8,8 +8,11 @@
 import java.io.ByteArrayOutputStream;
 import java.io.EOFException;
 import java.io.InputStream;
+import java.io.Serializable;
 
-class Type1Parser {
+class Type1Parser implements Serializable {
+
+    private static final long serialVersionUID = -8484541242371901414L;
 
     private static final String AfmHeader = "StartFontMetrics";
 

io/src/main/java/com/itextpdf/io/font/otf/Glyph.java

@@ -46,9 +46,12 @@
 
 import com.itextpdf.io.util.Utilities;
 
+import java.io.Serializable;
 import java.util.Arrays;
 
-public class Glyph {
+public class Glyph implements Serializable {
+
+    private static final long serialVersionUID = 1627806639423114471L;
 
     // The <i>code</i> or <i>id</i> by which this is represented in the Font File.
     private final int code;

io/src/main/java/com/itextpdf/io/source/RandomAccessSourceFactory.java

@@ -6,14 +6,17 @@
 import java.io.FileInputStream;
 import java.io.InputStream;
 import java.io.RandomAccessFile;
+import java.io.Serializable;
 import java.net.URL;
 import java.nio.channels.FileChannel;
 import java.text.MessageFormat;
 
 /**
  * Factory to create {@link RandomAccessSource} objects based on various types of sources
  */
-public final class RandomAccessSourceFactory {
+public final class RandomAccessSourceFactory implements Serializable {
+
+    private static final long serialVersionUID = -8958482579413233761L;
 
     /**
      * Whether the full content of the source should be read into memory at construction

io/src/main/java/com/itextpdf/io/util/IntHashtable.java

@@ -1,5 +1,6 @@
 package com.itextpdf.io.util;
 
+import java.io.Serializable;
 import java.util.Arrays;
 import java.util.Iterator;
 import java.util.NoSuchElementException;
@@ -17,7 +18,9 @@
  * @author Bruno Lowagie (change Objects as keys into int values)
  * @author Paulo Soares (added extra methods)
  */
-public class IntHashtable implements Cloneable {
+public class IntHashtable implements Cloneable, Serializable {
+
+    private static final long serialVersionUID = 7354463962269093965L;
 
     /***
      * The hash table data.