allan.jacobs@Eng 1997-10-27

Public class S is a superclass of class C. C is the enclosing class
for an inner class I. Protected fields of S are not accessible in
source code belonging to the inner class I.

algol% uname -a
SunOS algol 5.6 Generic sun4u sparc SUNW,Ultra-1
algol% setenv CLASSPATH .
algol% java -fullversion
java full version "1.1.4n:1997.10.16"
algol% javac -d . sX.java
algol% javac -d . X.java
X.java:6: Variable sXf in class sXpack.sX not accessible from inner class X. Y.
    void test() { System.out.println( sXf ); }
                                      ^
1 error
algol% cat sX.java

package sXpack;

public class sX {
        protected int sXf = 1;
}
algol% cat X.java

import sXpack.sX;

class X extends sX {
  class Y {
    void test() { System.out.println( sXf ); }
  }
  Y oy = new Y();
  public static void main( String[] argv ) {
    X ox = new X();
    ox.oy.test();
  }
}