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diff --git a/java/src/ACE.java b/java/src/ACE.java
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+/*************************************************
+ *
+ * = PACKAGE
+ *    ACE.OS
+ *
+ * = FILENAME
+ *    ACE.java
+ *
+ *@author Prashant Jain
+ *
+ *************************************************/
+package ACE.OS;
+
+/**
+ * <hr>
+ * <h2>SYNOPSIS</h2>
+ * <blockquote>Constants, utility "functions", etc.</blockquote>
+ *
+ * <h2>DESCRIPTION</h2>
+ *<blockquote>
+ * Defines default constants for ACE. Many of these are used for the
+ * ACE tests and applications. You may want to change some of these to
+ * correspond to your environment. Also, routines for error handling,
+ * debugging and bit manipulation are included.
+ *</blockquote>
+ *
+ * <h2>NOTES</h2>
+ *<blockquote>
+ * This class is non-instantiable, and intended only to provide a constrained
+ * namespace.
+ *</blockquote>
+ */
+public abstract class ACE
+{
+  /**
+   * Default port on which a server listens for connections.
+   */
+  public static final int DEFAULT_SERVER_PORT = 10002;
+
+  /** 
+   * Default name to use for a thread group.
+   */
+  public static final String DEFAULT_THREAD_GROUP_NAME = "ace_thread_group";
+
+  /**
+   * Disable debugging. Once debugging is disabled, all ACE.DEBUG
+   * statements would be ignored. 
+   */
+  public static final void disableDebugging ()
+  {
+    ACE.debug_ = false;
+  }
+
+  /**
+   * Enable debugging. Once debugging is enabled, all ACE.DEBUG
+   * statements get printed.
+   */
+  public static final void enableDebugging ()
+  {
+    ACE.debug_ = true;
+  }
+
+  /** 
+   * Print the string representation of Java Exception.
+   *@param e Java exception
+   */
+  public static final void ERROR (Exception e)
+    {
+      System.err.println (e);
+    }
+
+  /** 
+   * Print the string being passed in.
+   *@param s a Java String
+   */
+  public static final void ERROR (String s)
+    {
+      System.err.println (s);
+    }
+
+  /** 
+   * Print the string being passed in.
+   *@param s A Java String
+   *@return Error value passed in
+   */
+  public static final int ERROR_RETURN (String s, int errorVal)
+    {
+      System.err.println (s);
+      return errorVal;
+    }
+
+  /** 
+   * Print the string being passed in. Note the behavior will vary
+   * depending upon whether debugging is enabled or disabled.
+   *@param s a Java String
+   */
+  public static final void DEBUG (String s)
+    {
+      if (ACE.debug_)
+	System.out.println (s);
+    }
+
+  /** 
+   * Flush out any data that may be buffered.
+   */
+  public static final void FLUSH ()
+    {
+      System.out.flush ();
+    }
+
+  /** 
+   * Set the bits of WORD using BITS as the mask.
+   *@param WORD the bits to be set.
+   *@param BITS the mask to use.
+   *@return The value obtained after setting the bits.
+   */
+  public static final long SET_BITS (long WORD, long BITS)
+    {
+      return WORD | BITS;
+    }
+
+  /** 
+   * Clear the bits of WORD using BITS as the mask.
+   *@param WORD the bits to clear.
+   *@param BITS the mask to use.
+   *@return The value obtained after clearing the bits.
+   */
+  public static final long CLR_BITS (long WORD, long BITS)
+    {
+      return WORD & ~BITS;
+    }
+  
+  /** 
+   * Check if bits are enabled in WORD.
+   *@param WORD the bits to check.
+   *@param BIT the bit to check to see if it is enabled or not.
+   *@return true if bit is enabled, false otherwise.
+   */
+  public static final boolean BIT_ENABLED (long WORD, long BIT)
+    {
+      return (WORD & BIT) != 0;
+    }
+
+  /** 
+   * Check if bits are disabled in WORD.
+   *@param WORD the bits to check.
+   *@param BIT the bit to check to see if it is disabled or not.
+   *@return true if bit is disabled, false otherwise.
+   */
+  public static final boolean BIT_DISABLED (long WORD, long BIT)
+    {
+      return (WORD & BIT) == 0;
+    }
+  
+  // Debug flag (turn debugging on/off)
+  private static boolean debug_ = true;
+
+  // Default private constructor to avoid instantiation
+  private ACE ()
+  {
+  }
+}
+
+