a static jni method takes the jclass for that method as its second argument; simplify pad() and divide(), and rename divide() to ceiling(); sketch FileInputStream.cpp and FileOutputStream.cpp

classpath/java/io/FileDescriptor.java

@@ -5,7 +5,7 @@ public class FileDescriptor {
   public static final FileDescriptor out = new FileDescriptor(1);
   public static final FileDescriptor err = new FileDescriptor(2);
 
-  private final int value;
+  final int value;
 
   private FileDescriptor(int value) {
     this.value = value;