Abstract methods don't have a body- confused

[Xyz Abc]

Hi, abstract methods don't have a body and should end in a semicolon when described in an abstract class, but one big doubt.

What happens if you do declare it this way?

public void jump();

I tried it and there is NO COMPILER ERROR

Also, if I try marking a method as abstract and don't mark the class as abstract there is no compiler error again. My program runs fine.

Am I doing something wrong???
Please help!!

Thanks,
Nicole.

[Xyz Abc]

please help!!!

[palla sridhar]

Hi Nicole!!
I checked your doubt on my Java platform. I think you're doing something wrong or missing something, because when you declare like this,

public void jump();

in a normal or abstract class, you're BOUND to get a COMPILER ERROR like this:

 
test3\Test.java:13: missing method body, or declare abstract
        public void jump();
                    ^
1 error   

Also if you don't declare a class abstract having a abstract method you get a COMPILER ERROR like this:

test3\Test.java:3: test3.Test is not abstract and does not override abstract met
hod jump() in test3.Test
public  class Test {
        ^
1 error 

Check it out once again!!

[Xyz Abc]

You know the weirdest thing is, its still compiles fine

[Yogesh Baraskar]

Hi

Plese send the complete source code which you are trying to compile

[palla sridhar]

Hi Nicole!!
Try compiling both these classes.
Eg1:

  public abstract class Test3 {
 
public void jump(); 
}  

Eg2:

 public class Test4 {
 
public abstract void jump();
 
}   

If this is what you mean, then can you check whether these COMPILE??

[Akhilesh Trivedi]

Originally posted by Nicole Facompre:
You know the weirdest thing is, its still compiles fine

Please copy paste the code here...

[Rahul Shilpakar]

hi palla,

both example that you gave won't compile..

so it should be like this only ..

Ex1.
public abstract class A{

public abstract void method1();
}

OR

public abstract class A{

public void method1(){
}
}

[Rahul Shilpakar]

hi palla,

both example that you gave won't compile..

so it should be like this only ..

Ex1.
public abstract class A{

public abstract void method1();
}

OR

public abstract class A{

public void method1(){
}
}

[Rahul Shilpakar]

hi palla,

both example that you gave won't compile..

so it should be like this only ..

Ex1.
public abstract class A{

public abstract void method1();
}

OR

public abstract class A{

public void method1(){
}
}

[Xyz Abc]

I actually figured out what is wrong with my Eclipse. It shows the error happening in the Problems tab but also compiles and prints something to the console. Is this a problem with my compiler?

[Doug Slattery]

Hi Nicole,

When you ran the program, did you get a dialog that said:

"Errors exist in required project(s):"
...
"Proceed with Launch?"

This means that there is a problem in your code, but Eclipse will try to run it anyway. Sometimes, it *will* run, but can be misleading (obviously).

Aloha,
Doug

-- Nothing is impossible if I'mPossible

[Xyz Abc]

I think I have suppressed the option to show that dialog box sometime back

Anyway I know now!!