587             }
 588         }
 589         if (formatClassName == null) {
 590             throw new IllegalArgumentException("Unsupported format name");
 591         }
 592         try {
 593             // Try to load from the same location as the module of the SPI
 594             final String className = formatClassName;
 595             PrivilegedAction<Class<?>> pa = () -> { return getMetadataFormatClass(className); };
 596             Class<?> cls = AccessController.doPrivileged(pa);
 597             Method meth = cls.getMethod("getInstance");
 598             return (IIOMetadataFormat) meth.invoke(null);
 599         } catch (Exception e) {
 600             RuntimeException ex =
 601                 new IllegalStateException ("Can't obtain format");
 602             ex.initCause(e);
 603             throw ex;
 604         }
 605     }
 606 

 607     private Class<?> getMetadataFormatClass(String formatClassName) {
 608         Module thisModule = ImageReaderWriterSpi.class.getModule();
 609         Module targetModule = this.getClass().getModule();
 610         Class<?> c = Class.forName(targetModule, formatClassName);








 611         if (thisModule.equals(targetModule) || c == null) {
 612             return c;
 613         }
 614         if (thisModule.isNamed()) {
 615             int i = formatClassName.lastIndexOf(".");
 616             String pn = i > 0 ? formatClassName.substring(0, i) : "";
 617             if (!targetModule.isExported(pn, thisModule)) {
 618                 throw new IllegalStateException("Class " +  formatClassName +
 619                   " in named module must be exported to java.desktop module.");
 620             }
 621         }
 622         return c;
 623     }
 624 }

 587             }
 588         }
 589         if (formatClassName == null) {
 590             throw new IllegalArgumentException("Unsupported format name");
 591         }
 592         try {
 593             // Try to load from the same location as the module of the SPI
 594             final String className = formatClassName;
 595             PrivilegedAction<Class<?>> pa = () -> { return getMetadataFormatClass(className); };
 596             Class<?> cls = AccessController.doPrivileged(pa);
 597             Method meth = cls.getMethod("getInstance");
 598             return (IIOMetadataFormat) meth.invoke(null);
 599         } catch (Exception e) {
 600             RuntimeException ex =
 601                 new IllegalStateException ("Can't obtain format");
 602             ex.initCause(e);
 603             throw ex;
 604         }
 605     }
 606 
 607     // If updating this method also see the same in IIOMetadata.java
 608     private Class<?> getMetadataFormatClass(String formatClassName) {
 609         Module thisModule = ImageReaderWriterSpi.class.getModule();
 610         Module targetModule = this.getClass().getModule();
 611         Class<?> c = null;
 612         try {
 613             ClassLoader cl = this.getClass().getClassLoader();
 614             c = Class.forName(formatClassName, false, cl);
 615             if (!IIOMetadataFormat.class.isAssignableFrom(c)) {
 616                 return null;
 617             }
 618         } catch (ClassNotFoundException e) {
 619         }
 620         if (thisModule.equals(targetModule) || c == null) {
 621             return c;
 622         }
 623         if (targetModule.isNamed()) {
 624             int i = formatClassName.lastIndexOf(".");
 625             String pn = i > 0 ? formatClassName.substring(0, i) : "";
 626             if (!targetModule.isExported(pn, thisModule)) {
 627                 throw new IllegalStateException("Class " +  formatClassName +
 628                   " in named module must be exported to java.desktop module.");
 629             }
 630         }
 631         return c;
 632     }
 633 }