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Eclipse Configuration [message #1769713]

Wed, 02 August 2017 20:30

Daniel Piche

Messages: 4
Registered: August 2017

Junior Member

In my understanding, the JRE default character set can be defined in the 'run configurations' under TAB 'Common' :

Encoding (*) Default - inherited (UTF-8) ....

Question: It is inherited from where???

In my Indigo version the inherited default was cp1252, in Mars it was UTF-8 and in Oxygen it's back to cp1252 again!!!

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Re: Eclipse Configuration [message #1769735 is a reply to message #1769713]

Thu, 03 August 2017 04:29

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

It's inherited from Window -> Preferences -> General -> Workspace where there is a "Text file encoding" option.

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: Eclipse Configuration [message #1769799 is a reply to message #1769735]

Thu, 03 August 2017 13:36

Daniel Piche

Messages: 4
Registered: August 2017

Junior Member

Thank you, it does indeed. But this bring a new question!

What does java.io.FileReader class use as encoding/decoding character set?

In my understanding, this class is using java.nio.Charset.defaultCharset() as decoding charset.
From documentation, this default charset represent the JMV default charset.
So, I've used the 'file.encoding' JVM property to change the default and it's working perfectly.
The java.io.FileReader class behave as expected respecting the selected encoding.

But, strangly, the run configuration encoding (which is inherit from Workspace) doesn't change the JMV default charset.
The FileReader class doesn't behave as expected. To modify the JVM charset, I must set the 'file.encoding' property.

This bring a new question!

I'm running three version of Eclipse on the same PC.
- My Indigo version set the JMV charset to cp1252.
- My Mars version set the JMV charser to UTF-8.
- My Oxygen version set the JMV charset to cp1252.

When you launch a Java application from Eclipse, how does the JVM charset is set? It that controllable?

PS: I'm aware of the InputStreamReader class where you can control the encoding scheme.

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Re: Eclipse Configuration [message #1769806 is a reply to message #1769799]

Thu, 03 August 2017 14:09

Daniel Piche

Messages: 4
Registered: August 2017

Junior Member

OK, subject close...

It seem that the Eclipse Mars 2.0 version got a bug (at least in my version).
The run configuration doesn't inherit from Workspace and nether change the JMV encoding.

I was able to change the JMV encoding with the Workspace setting in Oxygen.

Thanks anyway.

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