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| hughson |
 Posted: Thu Jul 07, 2016 7:56 pm Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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Might be worth finding an introductory C programming course, then you'll be all good.
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IBM MQ Technical Education Specialist
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| santy84 |
| Posted: Thu Jul 07, 2016 10:11 pm Post subject: |
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Novice
Joined: 11 May 2016
Posts: 12
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| hughson wrote: |
| Might be worth finding an introductory C programming course, then you'll be all good. |
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| tczielke |
| Posted: Fri Jul 08, 2016 5:07 am Post subject: |
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Guardian
Joined: 08 Jul 2010
Posts: 941
Location: Illinois, USA
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"The C Programming Language" by Brian Kernighan and Dennis Ritchie is a good book to learn the basics of C. Java is based on C, so you have a leg up in learning it.
Java has A LOT of overhead, so you will find that your MQ C applications are much more cost effective and efficient to run than Java.
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| bruce2359 |
| Posted: Fri Jul 08, 2016 6:35 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9472
Location: US: west coast, almost. Otherwise, enroute.
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| tczielke wrote: |
"The C Programming Language" by Brian Kernighan and Dennis Ritchie is a good book to learn the basics of C. Java is based on C, so you have a leg up in learning it.
Java has A LOT of overhead, so you will find that your MQ C applications are much more cost effective and efficient to run than Java. |
With a bit more precision, much of the overhead is the Java Virtual Machine (JVM) as it translates Java byte code to machine instructions.
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| tczielke |
| Posted: Fri Jul 08, 2016 6:54 am Post subject: |
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Guardian
Joined: 08 Jul 2010
Posts: 941
Location: Illinois, USA
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An example of the performance difference is runmqakm (C) vs. runmqckm (Java).
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| gbaddeley |
| Posted: Sun Jul 10, 2016 5:03 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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In terms of performance, efficiency and resource utilisation, compiled C or C++ wins hands-down every time over Java.
However, Java has a lot of nice features, and C requires quite low level programming and has terrible string handling.
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Glenn |
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| smdavies99 |
| Posted: Sun Jul 10, 2016 9:30 pm Post subject: |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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| gbaddeley wrote: |
However, Java has a lot of nice features, and C requires quite low level programming and has terrible string handling. |
Very true. do I use strcpy or strncpy or memcpy or ?????
But, any competent developer soon creates their own toolbox of functions they trust to do this stuff.
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| PaulClarke |
| Posted: Sun Jul 10, 2016 9:45 pm Post subject: |
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Grand Master
Joined: 17 Nov 2005
Posts: 1002
Location: New Zealand
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Personally I don't think Java's handling of strings is anything to write home about 
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Paul Clarke
MQGem Software
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| mqjeff |
| Posted: Mon Jul 11, 2016 4:04 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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I generally find the Java language itself capable of being very simple, if one uses it in a straight forward way.
It also suffers from the piling on of lots of object interactions that make the code extremely difficult to read and manage.
But at least it doesn't rely on whitespace to indicate code blocks.
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| PaulClarke |
| Posted: Mon Jul 11, 2016 8:59 am Post subject: |
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Grand Master
Joined: 17 Nov 2005
Posts: 1002
Location: New Zealand
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The problem with Java is that if you use it in a 'straight forward way' you end up with code which is very inefficient. Strings are a fairly good example of this.
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MQGem Software
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| mqjeff |
| Posted: Mon Jul 11, 2016 9:04 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| PaulClarke wrote: |
| The problem with Java is that if you use it in a 'straight forward way' you end up with code which is very inefficient. Strings are a fairly good example of this. |
I said simple, not performant... 
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