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Virtual member call in a constructor
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Greg, please tell me why would anyone have a class SEALED (which cannot be INHERITED) when it has VIRTUAL members [that is to override in DERIVED classes]?
– Paul Pacurar
Feb 15 '11 at 15:27
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How to change owner of PostgreSql database?
...wner of a single database, but it replaces the owner everywhere by the new one.
– Michael003
Oct 16 '18 at 12:35
The a...
Running a cron job at 2:30 AM everyday
...s.
The expressions are added into crontab using crontab -e. Once you are done, save and exit (if you are using vi, typing :x does it). The good think of using this tool is that if you write an invalid command you are likely to get a message prompt on the form:
$ crontab -e
crontab: installing new ...
Disable all table constraints in Oracle
...s before you can reference them in a foreign key constraint. This can be done using an ORDER BY on constraint_type. 'P' = primary key, 'R' = foreign key.
BEGIN
FOR c IN
(SELECT c.owner, c.table_name, c.constraint_name
FROM user_constraints c, user_tables t
WHERE c.table_name = t.table_n...
Invoking a static method using reflection
...dited Dec 19 '16 at 6:06
Paul Rooney
15.8k88 gold badges3434 silver badges5656 bronze badges
answered Mar 18 '10 at 4:38
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How to find an element by matching exact text of the element in Capybara
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For using click_link in capybara you need to add one more property in the method using it.
click_link(link_name, :text => link_name)
Here the link_name is the text value of a link.
Using :text keyword we are specifying that we want to click on a link having the text ...
Environment variables for java installation
... ;c:\Programfiles\Java\jdk-1.6\bin in the value column.
Step 7 :Your are done setting up your environment variables for your Java , In order to test it go to command prompt and type
java
who will get a list of help doc
In order make sure whether compiler is setup Type in cmd
javac
wh...
Android EditText delete(backspace) key event
...een a while since you asked but I just had the same issue. As already mentioned by Estel the problem with key listeners is that they only work with hardware keyboards. To do this with an IME (soft keyboard), the solution is a bit more elaborate.
The single method we actually want to override is se...
How to determine day of week by passing specific date?
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@RenniePet: Good one. Also you can use constants in Calendar class, such as Calendar.SUNDAY or Calendar.JANUARY.
– Mohammad Banisaeid
Aug 18 '13 at 10:01
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Java: What is the difference between and ?
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<init> is the (or one of the) constructor(s) for the instance, and non-static field initialization.
<clinit> are the static initialization blocks for the class, and static field initialization.
class X {
static Log log = LogFactory...