allan.jacobs@Eng 1997-03-31

Compile a program unit containing a public class. Then compile another
program unit that imports that class. The second compilation will fail,
complaining that "Only public classes and interfaces in other packages
can be accessed."
 
For instance try compiling JCK test lang/BINC/binc006/binc00601/binc00601.html.
This test requires separate compilation of two program units, binc00601a.java
and binc00601.java (in that order). The test fails unexpectedly because
of compilation errors. Below is a recreation of the steps taken by the
JCK harness in attempting to compile and execute this test.

algol% pwd
/home/ajacobs/jit/binc00601
algol% rm -rf classes
algol% mkdir classes
algol% setenv CLASSPATH /set/sqe/java/JCK-11a/classes:/home/ajacobs/jit/binc00601/classes
algol% ls
classes/
algol% cat /set/sqe/java/JCK-11a/tests/lang/BINC/binc006/binc00601/binc00601a.java
// Ident: @(#)binc00601a.java 1.1 96/10/30
// Copyright 10/30/96 Sun Microsystems, Inc. All Rights Reserved

package javasoft.sqe.tests.lang.binc006.binc00601.binc00601b;

public class binc00601a {
  int a = 5;
}
    
algol% grep import /set/sqe/java/JCK-11a/tests/lang/BINC/binc006/binc00601/binc00601.java
import java.io.PrintStream;
import javasoft.sqe.tests.lang.binc006.binc00601.binc00601b.binc00601a;
algol% /usr/java/bin/javac -J-Djava.compiler=none -d /home/ajacobs/jit/binc00601/classes -nowarn /set/sqe/java/JCK-11a/tests/lang/BINC/binc006/binc00601/binc00601a.java
algol% /usr/java/bin/javac -J-Djava.compiler=none -d /home/ajacobs/jit/binc00601/classes -nowarn /set/sqe/java/JCK-11a/tests/lang/BINC/binc006/binc00601/binc00601.java
/set/sqe/java/JCK-11a/tests/lang/BINC/binc006/binc00601/binc00601.java:6:
Can't access class javasoft.sqe.tests.lang.binc006.binc00601.binc00601b.binc00601a.
Only public classes and interfaces in other packages can be accessed.
import javasoft.sqe.tests.lang.binc006.binc00601.binc00601b.binc00601a;
       ^
1 error



If the program units are compiled together there is no problem.

algol% /usr/java/bin/javac -J-Djava.compiler=none -d /home/ajacobs/jit/binc00601/classes -nowarn /set/sqe/java/JCK-11a/tests/lang/BINC/binc006/binc00601/binc00601a.java /set/sqe/java/JCK-11a/tests/lang/BINC/binc006/binc00601/binc00601.java
algol%