Why this simple inheritance issue occour

public class A extends B
     private Object lock=null;
     public A()
          super();// super intiallized
Err:          lock=super; //givin error on this statement
i m getting on above Err statement Error is
'.' expected at line 57 (57:28)
why is so is it not possible to assign super class to some other class in subclass
how to solve this problem .and why it occour
i also try this statement as
lock=(Object)super;
but same error occours
Thanks

super doesn't work like you would expect it to in the case of assignment. super isn't a reference to an object, but rather a mechanism for accessing inherited methods or fields.
Try using the following
lock = super.clone();Cheers,
Cypher

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Why this simple assingment is not possible in Generics ?

Hi
Just curious to know why this simple conversion does not work and requires casting ?
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List<? super Number> listN = list; //Requires Casting
List<? extends Number> listExNu = new ArrayList<Number>();
List<? extends Integer> listExIn = listExNu; //Requires CastingAs per my understanding ,
A List<? super Number> can fit inside a List<? super Integer> ...
So what really happens here to force casting ? Any ideas ?

ejp wrote:
List<? super Integer> list = new ArrayList<Integer>();The only two classes that are superclasses of Integer are Number and Object.Not quite. Please note that the clause *? super Integer* is inclusive, i.e. it also matches List<Integer>.
Additionally, it matches all interfaces implemented by Integer. Thus, the following types can be assigned to list:
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List<Serializable>
List<Comparable<Integer>>
List<Comparable<? extends Integer>>
List<Comparable<? super Integer>>
List<Comparable<? extends Number>>
List<Comparable<? extends Serializable>>
List<Comparable<?>>
List<Number>
List<Object>And the following types can be assigned to listN:
List<Serializable>
List<Number>
List<Object>Since the latter is a genuine subset of the former, an implicit conversion such as listN = list is impossible.

Simple? can anyone tell why this simple btn doesn't work?

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I don't know why but could this possibly be a graphics issue?
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HAH! OK - I am starting to get this a little.
Thank you St. LuigiL. You are my Obie-wan: the force is
strong with you.
I made a Main.as document class and now the whole thing works
like a charm! I was wondering if it was necessary to do so - and it
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In my OCD I am constantly striving to keep my classes to a
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Why this simple IF - ENDIF is NOT working??

Hi Experts,
Am wrting a simple IF condition with WILD CARD value , in the user exit, as below,
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sy-subrc = 0.
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2 )Say, the XLIKP-LGBZO value = ZB-01-02
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Hi Srini,
Try the following:
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I don't understand why this simple program will not print. Help please!!!

This program runs with no errors, it just doesn't print anything. Anyone have a clue as to why it doesn't print anything?
Here is my code:
import javax.swing.JOptionPane;
public class Converter {
public static void main(String[] args) {
int a,b,c;
int inputNum=Integer.parseInt(JOptionPane.showInputDialog(null," Enter a length in yards: "));
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a = inputNum*36;
System.out.println(a + "inches");
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Don't confuse String's equals() method with the equality operator '=='. The == operator checks that two references refer to the same object. If you want to compare the contents of Strings (whether two strings contain the same character sequence), use equals(), e.g. if (str1.equals(str2))...
Example:String s1 = "foo";
String s2 = new String("foo");
System.out.println("s1 == s2: " + (s1 == s2)); // false
System.out.println("s1.equals(s2): " + (s1.equals(s2))); // trueFor more information, check out the Java FAQ
~

Why this simple 'IF' syntax is not working?

Hello
Pls. help me that,
var myObject = /TextField11/
var greyFieldsList = "TextFieldAA TextFieldBB TextFieldCC "
var ReqFieldsList = "TextField11 TextField22 TextField33 "
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this.fillColor = "192,192,192"; //GREY
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Grey is working some times, some times not!
Pls. correct my IF condition in such a way it shoud work.
At given point of time, any field possess only one color
Thank you

Hi Srini,
Try the following:
IF XLIKP-LGBZO CP 'AB*'.
sy-subrc = 0.
ELSE.
sy-subrc = 4.
ENDIF.
CP - Contains Pattern
Hope this helps you.
Regards,
Chandra Sekhar

Why this simple code doesn't work?????

i get error "java.sql.SQLException: Operation not allowed after ResultSet closed "
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You need to use two separate statments if you're going to interleave the queries like that. I'd think you could get by with a single query and a join though, but I didn't actually look at what your queries are doing.
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Why this simple vi cannot work?

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In my Macbook Pro, on a few occassions, the apple menu bar blacks out. its displayed as a negative image. The desktop wallpaper get greyed out and i get a blank screen as wallpaper. No idea why this happens. I reset the system and issue gets resolved.

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Why this simple inheritance issue occour

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