Re: java study books

On Sep 1, 9:56*am, bujji <buddiinl...@gmail.com> wrote:
> What is Byte Code [sic]?

That's "byte code" or "bytecode". It is the assembler language of
Java, an intermediate computer language into which Java source code is
compiled, and from which machine code is compiled at run time. It is
similar in concept to Pascal "p-code".

> Why oracle Type 4 driver is named as oracle thin

Because Oracle wants us to realize that it uses less resources than
their other drivers.

> What is the difference between final, finally

"final" is a modifier for members, "finally" is a control structure
element.

> What is the Java API?

The Java application programming interface, or "API", is the set of
standard library classes provided with an implementation of Java.

> Is sizeof a keyword in java?

No.

> What is a native method?

A method compiled to the native platform, and not to the JVM.

> In System.out.println(), what is System, out and p..

'System' is a class comprising utility methods with which a Java
program can interact with its host platform. 'out' is a static member
of 'System', a 'PrintStream' that writes to the platform stdout
stream. 'println()' (assuming that what you meant) is a 'PrintStream'
method to emit characters to the stream.

HTH.

--
Lew

Lew wrote:
> On Sep 1, 9:56 am, bujji <buddiinl...@gmail.com> wrote:
>> Why oracle Type 4 driver is named as oracle thin
>
> Because Oracle wants us to realize that it uses less resources than
> their other drivers.

I don't think the "thin" is about resources - it is about what need to
be installed locally. The thin driver does not require the Oracle client
software to be installed. Just the jar file and actually not even that
because it can be downloaded by a classloader.

> ...

I agree with all the rest of Lew's good explanations.

Arne

On Sep 3, 5:59*pm, Arne Vajhøj <a...@vajhoej.dk> wrote:
> Lew wrote:
> > On Sep 1, 9:56 am, bujji <buddiinl...@gmail.com> wrote:
> >> Why oracle Type 4 driver is named as oracle thin
>
> > Because Oracle wants us to realize that it uses less resources than
> > their other drivers.
>
> I don't think the "thin" is about resources - it is about what need to
> be installed locally. The thin driver does not require the Oracle client
> software to be installed. Just the jar file and actually not even that
> because it can be downloaded by a classloader.

I see that client software as the resource not needed by the thin
driver.

--
Lew

Lew wrote:
> On Sep 3, 5:59 pm, Arne Vajhøj <a...@vajhoej.dk> wrote:
>> Lew wrote:
>>> On Sep 1, 9:56 am, bujji <buddiinl...@gmail.com> wrote:
>>>> Why oracle Type 4 driver is named as oracle thin
>>> Because Oracle wants us to realize that it uses less resources than
>>> their other drivers.
>> I don't think the "thin" is about resources - it is about what need to
>> be installed locally. The thin driver does not require the Oracle client
>> software to be installed. Just the jar file and actually not even that
>> because it can be downloaded by a classloader.
>
> I see that client software as the resource not needed by the thin
> driver.

Ah. I read "uses less resources" as "uses less CPU and/or RAM" not as
"uses less other software".

Arne

Arne Vajhøj wrote:
> Lew wrote:
>> On Sep 3, 5:59 pm, Arne Vajhøj <a...@vajhoej.dk> wrote:
>>> Lew wrote:
>>>> On Sep 1, 9:56 am, bujji <buddiinl...@gmail.com> wrote:
>>>>> Why oracle Type 4 driver is named as oracle thin
>>>> Because Oracle wants us to realize that it uses less resources than
>>>> their other drivers.
>>> I don't think the "thin" is about resources - it is about what need to
>>> be installed locally. The thin driver does not require the Oracle client
>>> software to be installed. Just the jar file and actually not even that
>>> because it can be downloaded by a classloader.
>>
>> I see that client software as the resource not needed by the thin
>> driver.
>
> Ah. I read "uses less resources" as "uses less CPU and/or RAM" not as
> "uses less other software".
>

I did too, since the distinction between "fewer" and "less" then
becaomes relevant.

--
RGB

RedGrittyBrick wrote:
>
> Arne Vajhøj wrote:
>> Lew wrote:
>>> On Sep 3, 5:59 pm, Arne Vajhøj <a...@vajhoej.dk> wrote:
>>>> Lew wrote:
>>>>> On Sep 1, 9:56 am, bujji <buddiinl...@gmail.com> wrote:
>>>>>> Why oracle Type 4 driver is named as oracle thin
>>>>> Because Oracle wants us to realize that it uses less resources than
>>>>> their other drivers.
>>>> I don't think the "thin" is about resources - it is about what need to
>>>> be installed locally. The thin driver does not require the Oracle
>>>> client
>>>> software to be installed. Just the jar file and actually not even that
>>>> because it can be downloaded by a classloader.
>>>
>>> I see that client software as the resource not needed by the thin
>>> driver.
>>
>> Ah. I read "uses less resources" as "uses less CPU and/or RAM" not as
>> "uses less other software".
>>
>
> I did too, since the distinction between "fewer" and "less" then
> becaomes relevant.

If there is more software running, then more CPU and RAM is needed. Ergo,
removing the extra driver means that the JDBC layer uses less resources. Q.E.D.

--
Lew

Lew wrote:
> RedGrittyBrick wrote:
>>
>> Arne Vajhøj wrote:
>>> Lew wrote:
>>>> On Sep 3, 5:59 pm, Arne Vajhøj <a...@vajhoej.dk> wrote:
>>>>> Lew wrote:
>>>>>> On Sep 1, 9:56 am, bujji <buddiinl...@gmail.com> wrote:
>>>>>>> Why oracle Type 4 driver is named as oracle thin
>>>>>> Because Oracle wants us to realize that it uses less resources than
>>>>>> their other drivers.
>>>>> I don't think the "thin" is about resources - it is about what need to
>>>>> be installed locally. The thin driver does not require the Oracle
>>>>> client
>>>>> software to be installed. Just the jar file and actually not even that
>>>>> because it can be downloaded by a classloader.
>>>>
>>>> I see that client software as the resource not needed by the thin
>>>> driver.
>>>
>>> Ah. I read "uses less resources" as "uses less CPU and/or RAM" not as
>>> "uses less other software".
>>
>> I did too, since the distinction between "fewer" and "less" then
>> becaomes relevant.
>
> If there is more software running, then more CPU and RAM is needed.
> Ergo, removing the extra driver means that the JDBC layer uses less
> resources. Q.E.D.

Nonsense.

There is no guarantee that:

ressource usage A + ressource usage B > ressource usage C

Arne