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diff --git a/core/java14/com/vladium/util/IJREVersion.java b/core/java14/com/vladium/util/IJREVersion.java
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+++ b/core/java14/com/vladium/util/IJREVersion.java
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+/* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved.
+ * 
+ * This program and the accompanying materials are made available under
+ * the terms of the Common Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * $Id: IJREVersion.java,v 1.1.1.1.2.1 2004/07/10 03:34:52 vlad_r Exp $
+ */
+package com.vladium.util;
+
+// ----------------------------------------------------------------------------
+/**
+ * A constant collection to detect the current JRE version. Note that this code
+ * is more sophisticated then a mere check of "java.version" or "java.class.version"
+ * and similar system properties because some JVMs allow overriding those
+ * by the user (e.g., from the command line). This implementation relies on
+ * the core classes only and tries to minimize the number of security-sensitive
+ * methods it uses.<P>
+ * 
+ * This interface is supported in Java 1.1+ and should be compiled with class
+ * version stamp 45.3 (-target 1.1).
+ * 
+ * @author Vlad Roubtsov, (C) 2003
+ */
+public
+interface IJREVersion
+{
+    // public: ................................................................
+
+    /** 'true' iff the current runtime version is 1.2 or later */
+    boolean JRE_1_2_PLUS = _JREVersion._JRE_1_2_PLUS; // static final but not inlinable
+    /** 'true' iff the current runtime version is 1.3 or later */
+    boolean JRE_1_3_PLUS = _JREVersion._JRE_1_3_PLUS; // static final but not inlinable
+    /** 'true' iff the current runtime version is 1.4 or later */
+    boolean JRE_1_4_PLUS = _JREVersion._JRE_1_4_PLUS; // static final but not inlinable
+    
+    // supporting Java 1.5 is trivial...
+    
+    boolean JRE_SUN_SIGNAL_COMPATIBLE = _JREVersion._JRE_SUN_SIGNAL_COMPATIBLE;
+    
+    /*
+     * Use a dummy nested class to fake a static initializer for the outer
+     * interface (I want IJREVersion as an interface and not a class so that
+     * all JRE_XXX constants could be imported via "implements").
+     */
+    abstract class _JREVersion
+    {
+        static final boolean _JRE_1_2_PLUS; // set in <clinit>
+        static final boolean _JRE_1_3_PLUS; // set in <clinit>    
+        static final boolean _JRE_1_4_PLUS; // set in <clinit>
+        
+        static final boolean _JRE_SUN_SIGNAL_COMPATIBLE; // set in <clinit>
+        
+        private _JREVersion () {} // prevent subclassing
+    
+        static
+        {
+            _JRE_1_2_PLUS = ((SecurityManager.class.getModifiers () & 0x0400) == 0);
+
+            boolean temp = false;            
+            if (_JRE_1_2_PLUS)
+            {
+                try
+                {
+                    StrictMath.abs (1.0);
+                    temp = true;
+                }
+                catch (Error ignore) {}
+            }
+            _JRE_1_3_PLUS = temp;
+            
+            if (temp)
+            {
+                temp = false;
+                try
+                {
+                    " ".subSequence (0, 0);
+                    temp = true;
+                }
+                catch (NoSuchMethodError ignore) {}
+            }
+            _JRE_1_4_PLUS = temp;
+            
+            temp = false;
+            try
+            {
+                Class.forName ("sun.misc.Signal");
+                Class.forName ("sun.misc.SignalHandler");
+                
+                temp = true;
+            }
+            catch (Throwable ignore) {}
+            
+            _JRE_SUN_SIGNAL_COMPATIBLE = temp;
+        }
+
+    } // end of nested class
+
+} // end of interface
+// ----------------------------------------------------------------------------
+