Packages and access mode problem

[Neroku]

Hello, Consider I have two folders: Ap and Bp. Each folder is a package
and has a source file, A.java and B.java respectively.
Those files contain the code below:

----------A.java-----------------------------------
package Ap;
public class A
{
public static void foo()
{
System.out.println("From A.foo()");
}
}

----------B.java-------------------------------
package Bp;
class B
{
public static void main(String []args)
{
Ap.A.foo();
}
}

It compiles fine, but when I run the B main method I get the following
error:

IllegalAccessException: Class
koala.dynamicjava.interpreter.EvaluationVisitor can not access a member
of class Bp.B with modifiers "public static"
at sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)

I do not acces any member of class Bp.B, Any ideas??

TIA

 

[Alan Krueger]

It compiles fine, but when I run the B main method I get the following
error:

IllegalAccessException: Class
koala.dynamicjava.interpreter.EvaluationVisitor can not access a member =================
of class Bp.B with modifiers "public static"
at sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)

I do not acces any member of class Bp.B, Any ideas??

The "B main method" is a public static member of class Bp.B, so yes,
you're trying to access a method on Bp.B.

Also, it looks like you're trying to run this through DynamicJava
instead of the normal JVM.

 

[Jhair Tocancipa Triana]

Alan Krueger ha escrito:

So, I can't run the main method because the B class is not public, and
therefore the class that call the main method in B is unable to access
to it because both clases are not in the same package.
This explains the runtime error I get, right?

Of course not.

(debian-unstable)jtocancipa@golem:~/tmp$ javac Ap/A.java
(debian-unstable)jtocancipa@golem:~/tmp$ javac Bp/B.java
(debian-unstable)jtocancipa@golem:~/tmp$ java Bp/B
From A.foo()

 

[Neroku]

Alan Krueger ha escrito:

The "B main method" is a public static member of class Bp.B, so yes,
you're trying to access a method on Bp.B.

So, I can't run the main method because the B class is not public, and
therefore the class that call the main method in B is unable to access
to it because both clases are not in the same package.
This explains the runtime error I get, right?

 

[Ehsan Khoddam mohammadi]

HI
How do you invoke your class files with "java"
?
Neroku äæÔÊå ÇÓÊ:

 

[Neroku]

Ehsan Khoddam mohammadi ha escrito:

HI
How do you invoke your class files with "java"
?
Neroku äæÔÊå ÇÓÊ:

Hello, Consider I have two folders: Ap and Bp. Each folder is a package
and has a source file, A.java and B.java respectively.
Those files contain the code below:

----------A.java-----------------------------------
package Ap;
public class A
{
public static void foo()
{
System.out.println("From A.foo()");
}
}

----------B.java-------------------------------
package Bp;
class B
{
public static void main(String []args)
{
Ap.A.foo();
}
}

It compiles fine, but when I run the B main method I get the following
error:

IllegalAccessException: Class
koala.dynamicjava.interpreter.EvaluationVisitor can not access a member
of class Bp.B with modifiers "public static"
at sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)

I do not acces any member of class Bp.B, Any ideas??

TIA

I click on the run botton in DrJava, but I do:
java B (current working directory is Bp)
I yields a different error.

I seems it only works fine if I do:
java Bp/B (current working directory is the parent of Bp)

 

[Daniel Pitts]

Hello, Consider I have two folders: Ap and Bp. Each folder is a package
and has a source file, A.java and B.java respectively.
Those files contain the code below:

----------A.java-----------------------------------
package Ap;
public class A
{
public static void foo()
{
System.out.println("From A.foo()");
}
}

----------B.java-------------------------------
package Bp;
class B
{
public static void main(String []args)
{
Ap.A.foo();
}
}

It compiles fine, but when I run the B main method I get the following
error:

IllegalAccessException: Class
koala.dynamicjava.interpreter.EvaluationVisitor can not access a member
of class Bp.B with modifiers "public static"
at sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)

I do not acces any member of class Bp.B, Any ideas??

TIA

This looks more like a problem with koala.dynamicjava, whatever that
is.

I'm guessing you can solve this issue by change
"class B" to "public class B"

HTH
- Daniel.

 

[Rajdeep]

I think u should use import statement.
import A;
it will solve the problem.