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What is the difference between public, protected, package-private and private in Java?
...not subclass from different package. There should be a correction in above table
– niks
Sep 1 '17 at 8:35
I am still n...
Assembly code vs Machine code vs Object code?
... machine code file in a text editor you would see garbage, including unprintable characters (no, not those unprintable characters ;) ).
Object code is a portion of machine code not yet linked into a complete program. It's the machine code for one particular library or module that will make up the co...
Best XML parser for Java [closed]
...g parser implementation in a standard way. The code should be much more portable, and when you realise that a specific parser has grown too old, you can replace it with another without changing a line of your code (if you do it correctly).
Basically there are three ways of handling XML in a standar...
MySQL Results as comma separated list
... you can use just concat()
Select concat(Col1, ',', Col2) as Foo_Bar from Table1;
edit this only works in mySQL; Oracle concat only accepts two arguments. In oracle you can use something like select col1||','||col2||','||col3 as foobar from table1;
in sql server you would use + instead of pipes....
What is the difference between Trap and Interrupt?
..., I/O ports, etc). These are asynchronous (i.e. they don't happen at predictable places in the user code) or "passive" since the interrupt handler has to wait for them to happen eventually.
You can also see a trap as a kind of CPU-internal interrupt since the handler for trap handler looks like an ...
Do I have to guard against SQL injection if I used a dropdown?
...yway would look something like this:
curl --data "size=%27%29%3B%20DROP%20TABLE%20*%3B%20--" http://www.example.com/profile/save
(This might not be a totally valid curl command, but again, I hope I've gotten my point across.)
So, I'll reiterate:
NEVER trust user input. ALWAYS protect yourself....
LINQ: “contains” and a Lambda query
...
here I'm try to match my userType form user type table to user table for t collect department head name hope sa
– mohit vijay chaudhari
Sep 4 at 9:31
...
Can I concatenate multiple MySQL rows into one field?
...ead of a group—and concatenate on a certain field.
Let's say you have a table of product ids and their names and prices:
+------------+--------------------+-------+
| product_id | name | price |
+------------+--------------------+-------+
| 13 | Double Double | 5 |...
HashMap and int as key
...putForNullKey(value);
int hash = hash(key);
int i = indexFor(hash, table.length);
for (Entry<K,V> e = table[i]; e != null; e = e.next) {
Object k;
if (e.hash == hash && ((k = e.key) == key || key.equals(k))) {
V oldValue = e.value;
e....
What does the construct x = x || y mean?
...se {
return false;
}
}
If you still don't understand, look at this table:
| true false
------+---------------
true | true true
false | true false
In other words, it's only false when both values are false.
How is it different in JavaScript?
JavaScript is a bit differ...