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

*** 169,178 ****
--- 169,199 ----
          }
          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
       */