Use a simple serialVersionUID

h2/src/main/org/h2/message/InternalException.java

@@ -13,7 +13,7 @@ package org.h2.message;
  */
 public class InternalException extends RuntimeException {
 
-    private static final long serialVersionUID = -5369631382082604330L;
+    private static final long serialVersionUID = 1L;
     private Exception cause;
 
     public InternalException(Exception e) {

h2/src/main/org/h2/server/web/WebServlet.java

@@ -26,7 +26,7 @@ import org.h2.util.StringUtils;
  */
 public class WebServlet extends HttpServlet {
 
-    private static final long serialVersionUID = 9171446624885086692L;
+    private static final long serialVersionUID = 1L;
     private transient WebServer server;
 
     public void init() {

h2/src/main/org/h2/store/fs/FileObjectMemory.java

@@ -50,7 +50,8 @@ public class FileObjectMemory implements FileObject {
      */
 //## Java 1.4 begin ##
     static class Cache<K, V> extends LinkedHashMap<K, V> {
-        private static final long serialVersionUID = 5549197956072850355L;
+
+        private static final long serialVersionUID = 1L;
         private int size;
 
         Cache(int size) {