Cheney
asked on
Accessing private class variables
Hello.
Im having trouble finding a solution for the following problem:
I have a class A that contains a private variable:
class A
{
private double variable;
}
I need to access variable (both get and set) from another class, WITHOUT adding get and set methods to the class. I tried to use a second, inner, class as it too whould have access to the variable, however this was daft as you cannot instante inner classes of one class from another...
I need a way to access variable, whether it be through a second class or some kind of hack.
Thanks in advance for your assistance.
Rick.
Im having trouble finding a solution for the following problem:
I have a class A that contains a private variable:
class A
{
private double variable;
}
I need to access variable (both get and set) from another class, WITHOUT adding get and set methods to the class. I tried to use a second, inner, class as it too whould have access to the variable, however this was daft as you cannot instante inner classes of one class from another...
I need a way to access variable, whether it be through a second class or some kind of hack.
Thanks in advance for your assistance.
Rick.
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how about using protected ????
> how about using protected ????
only good if you're extending the class
only good if you're extending the class
import java.lang.reflect.*;
Here's an example that reads all member vars of a class including private.
public class ReadPrivateFields
{
public static void main(String[] args) throws Exception
{
Class c = Class.forName(args[0]);
Object o = c.newInstance();
Field[] fields = c.getDeclaredFields();
for (int i = 0; i < fields.length; i++)
{
String key = fields[i].getName();
fields[i].setAccessible(tr
System.out.println(field + " -value- " + fields[i].get(o));
}
}
}
Here's an example that reads all member vars of a class including private.
public class ReadPrivateFields
{
public static void main(String[] args) throws Exception
{
Class c = Class.forName(args[0]);
Object o = c.newInstance();
Field[] fields = c.getDeclaredFields();
for (int i = 0; i < fields.length; i++)
{
String key = fields[i].getName();
fields[i].setAccessible(tr
System.out.println(field + " -value- " + fields[i].get(o));
}
}
}
>> how about using protected ????
>only good if you're extending the class
... or under the same package.
>only good if you're extending the class
... or under the same package.
Nice code there objects.. i'm keeping it for future reference =)
~ Objects the Visible Difference, nice slogan hehe
~ Objects the Visible Difference, nice slogan hehe
> Objects the Visible Difference, nice slogan hehe
A marketing mate came up with that for me, I'll pass on your approval to him :)
A marketing mate came up with that for me, I'll pass on your approval to him :)
ASKER