Re: How do I decide for class responsibilities? - Java Discussion Boards

Re: How do I decide for class responsibilities?

Nagy Vilmos9-Jul-12 8:23

Nagy Vilmos

9-Jul-12 8:23

Intelligence without being a third year undergraduate! How the fock did you do that?

Panic, Chaos, Destruction. My work here is done.
Drink. Get drunk. Fall over - P O'H
OK, I will win to day or my name isn't Ethel Crudacre! - DD Ethel Crudacre
I cannot live by bread alone. Bacon and ketchup are needed as well. - Trollslayer
Have a bit more patience with newbies. Of course some of them act dumb - they're often *students*, for heaven's sake - Terry Pratchett

Re: How do I decide for class responsibilities?

Pete O'Hanlon9-Jul-12 8:31

Pete O'Hanlon

9-Jul-12 8:31

I probably knicked it from someone clever. And I'm someone who hasn't got a computer degree - largely self taught. I don't think it's done me any harm.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Re: How do I decide for class responsibilities?

Nagy Vilmos9-Jul-12 8:33

Nagy Vilmos

9-Jul-12 8:33

I got my 'putin' degree only last year - after 25+ years - to find out what's new. Very little is the answer.

Re: How do I decide for class responsibilities?

Pete O'Hanlon9-Jul-12 8:41

Pete O'Hanlon

9-Jul-12 8:41

I believe most of it is just fancy names for what we were doing anyway.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Re: How do I decide for class responsibilities?

Nagy Vilmos9-Jul-12 8:45

Nagy Vilmos

9-Jul-12 8:45

The one thing I found fascinating was Systems Theory[^]. It has nothing to do what you think and is a complete mind fock until you get the little light come on...

Re: How do I decide for class responsibilities?

Pete O'Hanlon9-Jul-12 8:53

Pete O'Hanlon

9-Jul-12 8:53

That looks interesting. I might do some digging around into that.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Re: How do I decide for class responsibilities?

Nagy Vilmos9-Jul-12 9:00

Nagy Vilmos

9-Jul-12 9:00

It's fun when you look at a problem domain and actually find that the best solution is to not use computers but to go back to a manual solution.

The simplest description is that you look for a single small step to improve the situation, then go back and repeat until you reach an acceptable situation without knowing what the solution will eb when you start. As I said, it's brain fick to start with until you have an epiphany.

Re: How do I decide for class responsibilities?

Stingrae7899-Jul-12 10:00

Stingrae789

9-Jul-12 10:00

Now to actually give you an alternate answer...

While this is overly complicated for the question:

Body and Title could be considered types of text components and your Post could be a 'Base Object' type that consists of a component list. In this 'silly' system, your 'Post' can easily be given any number of components because Post supports having components that have their own functions.

Why not have the components as members? Well because with this idea of base objects having a list you only have to change whether you are giving the component to the object rather than modifying the member in the class. e.g. I want a new 'StupidEnemy' that has a different 'AIComponent' to the 'Enemy'. I don't have to have a new class for my new type of enemy I simply give them a different AIComponent at instantiation.

I don't think this is a great approach in most cases (As you 'could' end up using a data structure to hold a single component, this seems illogical), I’ve used it a little before and it has its pros and cons but it does mean your code fits SOLID. It works quite well for game development though as it keeps the project tidy (Relative to just using straight composition).

Java

//This is all just to represent the use of a components
BaseObject post = new Post(); //for some reason our post needs to be a subclass, again this is just a silly example.
TextComponent Header = new Header("Header"); //Best to use a uID here instead so you can potentially have multiple headers or a multimap over a vector
post.Add(Header); //Add would initialise the component to have a pointer to the Base Object
Post->getComponent("Header").SetMessage("Hello World") //get our component
//in event cycle
Post->Execute();//what ever you want to call on all components Update(), Render() etc.

/rant I didn't do English at University, it has no real place in a BSc also it's more of a sociology/business idea and while it does occur, I want to aim to have a better work ethic constantly for myself!/endrant

modified 9-Jul-12 16:09pm.

Instrument Automation

CMA215-Jul-12 10:45

CMA21

5-Jul-12 10:45

I'm attempting automate tests using my Agilent EXA 9010A Signal analyzer. Any suggestions for doing this in Java? I am not a fan of C# and would prefer to use Java

Re: Instrument Automation

TorstenH.5-Jul-12 19:22

TorstenH.

5-Jul-12 19:22

I would try to find out here on the products website[^].

regards Torsten
When I'm not working

Re: Instrument Automation

jschell6-Jul-12 11:20

jschell

6-Jul-12 11:20

Via the link in the other answer...look at the document tab. Then look at

"X-Series Signal Analyzer Spectrum Analyzer Mode User's and Programmer's Reference"

From there I found the following reference in the summary section

• Using the Windows XP Remote Desktop to connect to the instrument remotely
• Using the Embedded Web Server Telnet connection to communicate SCPI

The first is a possibility however the second would be what I would start with first because it is easy to do telnet. Only question is that does what it suggests and does everything you want.

If it does then you create an API for management FIRST (before doing what ever else you want.) You can either write your own telnet interface or use the Apache Commons Net component.

java with text file

RORY175-Jul-12 9:35

RORY17

5-Jul-12 9:35

i wrote java code to read text file and when i give it word it give me its position .now i want code that when i give it a word the result will be words behind this word in same line

EX: market shop,online,web site-----data of text file in line 1
: market shop,null

when i enter "market shop"&"online" it give me "web site"
but when i enter only "market shop" it give me "null"

Re: java with text file

TorstenH.5-Jul-12 19:13

TorstenH.

5-Jul-12 19:13

fine. You have done something wrong in there.

This is homework. So please try to solve it yourself.
You can get help for that by posting your code here (format it with the code tags).
Then we might be able to give you a hind where the problem is.

Have you debugged your code?

regards Torsten
When I'm not working

Re: java with text file

RORY175-Jul-12 23:15

RORY17

5-Jul-12 23:15

yes i debug my code.ok anyway thank you i will solve it by my self

Re: java with text file

RORY175-Jul-12 23:37

RORY17

5-Jul-12 23:37

what i mean that anyone give me an algorithm or idea for writing this code not give me a code ,i already think about it and i have ideas but i want another ideas that more flexible

Re: java with text file

TorstenH.5-Jul-12 23:40

TorstenH.

5-Jul-12 23:40

algorithm ?

This is basic Java, don't make it rocket science.

Don't get me wrong: We are willing to help you. But it's our basic rule to not post solutions to homework.

regards Torsten
When I'm not working

Re: java with text file

RORY176-Jul-12 0:51

RORY17

6-Jul-12 0:51

ok and what i mean is not to solve or give me a code just all i want is steps that i applied it in code of course not code syntax .but thank you i working on my code & i will do it by my self

Re: java with text file

Richard MacCutchan6-Jul-12 1:07

Richard MacCutchan

6-Jul-12 1:07

As Torsten said earlier, there is something wrong in your code, but unless you show us that code we cannot begin to guess what the problem is. Nor can we suggest any possible solutions since we have no idea how you are processing your inputs and your searches. Help us to help you, by posting the code involved in the search process, and don't forget to put <pre> tags round it so it is readable.

speaking as ...

disable minimize button in JFrame

Member 78380275-Jul-12 5:19

Member 7838027

5-Jul-12 5:19

hi, I'm looking for a way to disable the minimize button in the JFrame's titlebar. I've been googling on how to solve this, I didn't get the answer that i've been looking for...

some suggestions include:
1. using a jdialog -> but the maximize button will also be hidden
2. using JInternalFrame -> but it's not the look-and-feel that i want to achieve

please help me with this one... at first, i thought it would be easy because i thought that there's a setMinimizeable or setIconifiable method for JFrame, but there isn't.

Re: disable minimize button in JFrame

TorstenH.5-Jul-12 19:10

TorstenH.

5-Jul-12 19:10

There is no way to do this - you will have to use JDialog.
Maximize and minimize are 2 functions that are literally combined.

Another approach would be to make the JFrame undecorated(true) and to draw some buttons yourself (and a title bar if you need a real title bar).

regards Torsten
When I'm not working

java database

Member 82109845-Jul-12 5:17

Member 8210984

5-Jul-12 5:17

can i know how to the excel files can be imported into sql database by using java codes..

thank u

u.vinothh@gmail.com

Re: java database

jschell5-Jul-12 6:20

jschell

5-Jul-12 6:20

What does "imported" mean?

Do you want to store the excel file itself into the database?
Or do you want to read the data from the excel file and then store that into columns in the database?

For the first option read the file in binary (bytes, not String/char) and then stream it via JDBC.

For the second, easiest is don't use java. Store the excel file as CSV then use the import features of the database to load it.

Provider

JimAce5-Jul-12 0:53

JimAce

5-Jul-12 0:53

I have a project with Java Eclipse for android which stores data in SQLLite. My issue comes in when I include 100 lines of INSERT, it prompts me the EXCEEDED 65535 bytes.

Is it possible to place 2 "provider android:name=" in manifest then create 2 sets of the ContentProvider then make the second provider run like a continuation of the first set?

Hope you can help me. This is my first project with android. Thank you.

Re: Provider

TorstenH.5-Jul-12 1:19

TorstenH.

5-Jul-12 1:19

false approach.
Why do you insert 100 rows into the database at once? what is that? can't you narrow that down?

you should limit the data - paging could also be a solution.

regards Torsten
When I'm not working

Re: Provider

JimAce5-Jul-12 4:12

JimAce

5-Jul-12 4:12

What my objective is to update the database if there is a new version. Normally 1 category contains between 50 to 100 records which I hardcode in ContentProvider. Since I was getting the exceeded 65535 error, I had to split the insert to 2 classes however I am not sure how. Should I place 2 Provider android:name in Manifest? I am lost.

However, if there are any better options I am open to it since I am very new to Java Eclipse.

Thank you.

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