Index: src/java/org/apache/log4j/Level.java
===================================================================
RCS file: /home/cvspublic/logging-log4j/src/java/org/apache/log4j/Level.java,v
retrieving revision 1.15
diff -b -B -U8 -r1.15 Level.java
--- src/java/org/apache/log4j/Level.java	1 Dec 2004 07:58:08 -0000	1.15
+++ src/java/org/apache/log4j/Level.java	5 May 2005 12:43:37 -0000
@@ -26,17 +26,20 @@
    <code>TRACE</code>, and <code>ALL</code>.
 
    <p>The <code>Level</code> class may be subclassed to define a larger
    level set.
 
    @author Ceki G&uuml;lc&uuml;
    @author Yoav Shapira
  */
-public class Level {
+public class Level implements java.io.Serializable {
+
+  static final long serialVersionUID = -2641103705982732015L;
+
   /**
    * OFF level integer value.
    */
   public static final int OFF_INT = Integer.MAX_VALUE;
 
   /**
    * FATAL level integer value.
    */
@@ -326,11 +329,20 @@
     }
 
     if (s.equals("OFF")) {
       return OFF;
     }
 
     return defaultLevel;
   }
+
+  /**
+   * Custom subclasses of Level may wish to implement their own
+   * <code>readResolve</code> class.
+   */
+  private Object readResolve() {
+    return toLevel(this.level, this);
+  }
+
 }
 
 // End of class: Level.java