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Importing Packages (was Urgent)  RSS feed

 
Ravi Ahuja
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Hello Ranchers
I am taking the exam tommorow and i have one query
My pc isnt working and so i cannot compile and see the behaviour of the following java file
Please Help me out right now i have logged in from cyber cafe
Without wasting the time i am posting the question
[code]

//Test.java

package foo;
class Test
{
protected void methodA()
{
}
}
------------
//XYZ.java
package bar;
import package foo.*;
class XYZ extends Test
{
public static void main(String ar[]){
XYZ obj=new XYZ();
obj.methodA();
}
}
what will be the output .
I guess The output would be a compile error
but its using the dot reference on the subclass so i am a bit messed up please clear guys
Thanks
[code]


One more Question
//Test.java
package foo;
class Test
{
char methodA()
{
}
}

======
//XYZ.java
package bar;
import foo.*;
class XYZ extends Test
{
public static void main(String ar[])
{
Test t=new Test();
t.methodA();
}
}
What is the output i guess again compile error because the methodA is having the default please just clarify thanks a lot
[code]

Edited title:like Bert wrote below (it may be urgent to you, but it is not to the majority)
[ June 03, 2007: Message edited by: Barry Gaunt ]
 
Ravi Ahuja
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import package foo.*;
sorry for this one
it should be import foo.*;
actually i was in a hurry sorry
Waiting for your quick response thanks everyone once again
 
Chandra Bhatt
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Hi!


In both the cases compiler error because Test class is not public and
can't be seen outside the package. For exam remember to see the class
accessibility before member.


No hurry!
 
Chandra Bhatt
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Other tips:

In case Test class is public:


1- You can't access the protected member of the Test class in the extending
class in another package using the ref variable of Test class and dot operator.

2- It is legal to access the protected member of the Test class using
the ref variable of the extending class and dot operator.
 
Bert Bates
author
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Hi Guys,

Remember, JavaRanch is entirely populated by volunteers. So a thread title like "URGENT" is discouraged for at least two reasons:

1 - It doesn't help volunteers know whether this is a question they can help with. It's much friendlier to mention the topic of the question in the thread heading - that saves the precious time of all the volunteers who are scanning titles looking for places where they can help.

2 - In my experience, using the word "URGENT" or anything similar in a thread title actually discourages volunteers from looking at that thread - it's very likely that an "URGENT"-ly titled thread will come off looking selfish and unpleasant to deal with.
 
Ravi Ahuja
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Thanks chandra
So a subclass can use a dot operator to access a protected member of the superclass
fine thanks a lot relief now

Sorry Barry
will follow it next time
Thanks Chandra
 
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