src/java.desktop/share/classes/sun/java2d/SurfaceManagerFactory.java

*** 48,58 ****
       * Returns the surface manager factory instance. This returns a factory
       * that has been set by {@link #setInstance(SurfaceManagerFactory)}.
       *
       * @return the surface manager factory
       */
!     public synchronized static SurfaceManagerFactory getInstance() {
  
          if (instance == null) {
              throw new IllegalStateException("No SurfaceManagerFactory set.");
          }
          return instance;
--- 48,58 ----
       * Returns the surface manager factory instance. This returns a factory
       * that has been set by {@link #setInstance(SurfaceManagerFactory)}.
       *
       * @return the surface manager factory
       */
!     public static synchronized SurfaceManagerFactory getInstance() {
  
          if (instance == null) {
              throw new IllegalStateException("No SurfaceManagerFactory set.");
          }
          return instance;
*** 63,73 ****
       * may not be set back to {@code null} when the factory is already
       * instantiated.
       *
       * @param factory the factory to set
       */
!     public synchronized static void setInstance(SurfaceManagerFactory factory) {
  
          if (factory == null) {
              // We don't want to allow setting this to null at any time.
              throw new IllegalArgumentException("factory must be non-null");
          }
--- 63,73 ----
       * may not be set back to {@code null} when the factory is already
       * instantiated.
       *
       * @param factory the factory to set
       */
!     public static synchronized void setInstance(SurfaceManagerFactory factory) {
  
          if (factory == null) {
              // We don't want to allow setting this to null at any time.
              throw new IllegalArgumentException("factory must be non-null");
          }