Index: IndexWriter.java
===================================================================
--- IndexWriter.java	(revision 165147)
+++ IndexWriter.java	(working copy)
@@ -51,68 +51,113 @@
 
 public class IndexWriter {
 
-  /**
+ /**
    * Default value is 1000.  Use <code>org.apache.lucene.writeLockTimeout</code>
-   * system property to override.
+   * system property to override. If a failure to get the system property occurs, perhaps
+   * because Lucene is being used in an unsigned applet, use the default.
    */
-  public static long WRITE_LOCK_TIMEOUT =
-    Integer.parseInt(System.getProperty("org.apache.lucene.writeLockTimeout",
-      "1000"));
+  public static long WRITE_LOCK_TIMEOUT;
+  static {
+	  try {
+		  WRITE_LOCK_TIMEOUT = Integer.parseInt(System.getProperty("org.apache.lucene.writeLockTimeout", "1000"));
+	  } catch ( Exception se ) {
+		  WRITE_LOCK_TIMEOUT = 1000;
+	  }
+  }
 
   /**
    * Default value is 10000.  Use <code>org.apache.lucene.commitLockTimeout</code>
-   * system property to override.
+   * system property to override.  If a failure to get the system property occurs, perhaps
+   * because Lucene is being used in an unsigned applet, use the default.
    */
-  public static long COMMIT_LOCK_TIMEOUT =
-    Integer.parseInt(System.getProperty("org.apache.lucene.commitLockTimeout",
-      "10000"));
+  public static long COMMIT_LOCK_TIMEOUT;
+  static {
+		try {
+			COMMIT_LOCK_TIMEOUT = Integer.parseInt(System.getProperty("org.apache.lucene.commitLockTimeout", "10000"));
+		} catch ( Exception se ) {
+			COMMIT_LOCK_TIMEOUT = 10000;
+		}
+	}
 
   public static final String WRITE_LOCK_NAME = "write.lock";
   public static final String COMMIT_LOCK_NAME = "commit.lock";
 
   /**
    * Default value is 10.  Use <code>org.apache.lucene.mergeFactor</code>
-   * system property to override.
+   * system property to override.  If a failure to get the system property occurs, perhaps
+   * because Lucene is being used in an unsigned applet, use the default.
    */
-  public static final int DEFAULT_MERGE_FACTOR =
-    Integer.parseInt(System.getProperty("org.apache.lucene.mergeFactor",
-      "10"));
+  public static int DEFAULT_MERGE_FACTOR;
+  static {
+	  try {
+		DEFAULT_MERGE_FACTOR = Integer.parseInt(System.getProperty("org.apache.lucene.mergeFactor", "10"));
+	  } catch ( Exception e ) {
+	  	DEFAULT_MERGE_FACTOR = 10;
+	  }
+  }
 
   /**
    * Default value is 10.  Use <code>org.apache.lucene.minMergeDocs</code>
-   * system property to override.
+   * system property to override.  If a failure to get the system property occurs, perhaps
+   * because Lucene is being used in an unsigned applet, use the default.
    */
-  public static final int DEFAULT_MIN_MERGE_DOCS =
-    Integer.parseInt(System.getProperty("org.apache.lucene.minMergeDocs",
-      "10"));
+  public static int DEFAULT_MIN_MERGE_DOCS;
+ static {
+	 try {
+		DEFAULT_MIN_MERGE_DOCS = Integer.parseInt(System.getProperty("org.apache.lucene.minMergeDocs", "10"));
+	 } catch ( Exception e ) {
+		 DEFAULT_MIN_MERGE_DOCS = 10;
+	 }
+ }
 
   /**
    * Default value is {@link Integer#MAX_VALUE}.
    * Use <code>org.apache.lucene.maxMergeDocs</code> system property to override.
+   * If a failure to get the system property occurs, perhaps
+   * because Lucene is being used in an unsigned applet, use the default.
    */
-  public static final int DEFAULT_MAX_MERGE_DOCS =
-    Integer.parseInt(System.getProperty("org.apache.lucene.maxMergeDocs",
-      String.valueOf(Integer.MAX_VALUE)));
+  public static int DEFAULT_MAX_MERGE_DOCS;
+ static {
+	 try {
+		 DEFAULT_MAX_MERGE_DOCS = Integer.parseInt(System.getProperty("org.apache.lucene.maxMergeDocs",
+		   String.valueOf(Integer.MAX_VALUE)));
+	 } catch ( Exception e ) {
+		  DEFAULT_MAX_MERGE_DOCS = Integer.MAX_VALUE;
+	 }
+ }
 
   /**
    * Default value is 10000.  Use <code>org.apache.lucene.maxFieldLength</code>
-   * system property to override.
+   * system property to override. If a failure to get the system property occurs, perhaps
+   * because Lucene is being used in an unsigned applet, use the default.
    */
-  public static final int DEFAULT_MAX_FIELD_LENGTH =
-    Integer.parseInt(System.getProperty("org.apache.lucene.maxFieldLength",
+  public static int DEFAULT_MAX_FIELD_LENGTH;
+  static {
+	  try {
+		  DEFAULT_MAX_FIELD_LENGTH = Integer.parseInt(System.getProperty("org.apache.lucene.maxFieldLength",
       "10000"));
+	  } catch ( Exception e ) {
+		  DEFAULT_MAX_FIELD_LENGTH = 10000;
+	  }
+  }
 
 
   /** The default value for {@link #getTermIndexInterval()}.  This is
    * determined by the <code>org.apache.lucene.termIndexInterval</code> system
-   * property.  The default is 128.
+   * property.  The default is 128. If a failure to get the system property occurs, perhaps
+   * because Lucene is being used in an unsigned applet, use the default.
    */
-  public static final int DEFAULT_TERM_INDEX_INTERVAL =
-    Integer.parseInt(System.getProperty("org.apache.lucene.termIndexInterval",
+  public static int DEFAULT_TERM_INDEX_INTERVAL;
+  static {
+  	  try {
+	  	DEFAULT_TERM_INDEX_INTERVAL = Integer.parseInt(System.getProperty("org.apache.lucene.termIndexInterval",
                                         "128"));
+  	  } catch ( Exception e ) {
+  	  	DEFAULT_TERM_INDEX_INTERVAL = 128;
+  	  }
+  }
 
 
-
   private Directory directory;  // where this index resides
   private Analyzer analyzer;    // how to analyze text