src/java.base/share/classes/java/lang/ThreadLocal.java

@@ -169,10 +169,31 @@
         }
         return setInitialValue();
     }
 
     /**
+     * Returns the value in the current thread's copy of this
+     * thread-local variable.  If the variable has no value for the
+     * current thread, null is returned and no value is initialized.
+     *
+     * @return the current thread's value of this thread-local or null
+     */
+    T getIfPresent() {
+        Thread t = Thread.currentThread();
+        ThreadLocalMap map = getMap(t);
+        if (map != null) {
+            ThreadLocalMap.Entry e = map.getEntry(this);
+            if (e != null) {
+                @SuppressWarnings("unchecked")
+                T result = (T)e.value;
+                return result;
+            }
+        }
+        return null;
+    }
+
+    /**
      * Variant of set() to establish initialValue. Used instead
      * of set() in case user has overridden the set() method.
      *
      * @return the initial value
      */