[program-java] Re: Writing and reading class instance variables
- From: "Roger Woolgrove" <rawoolgrove@xxxxxxxxx>
- To: <program-java@xxxxxxxxxxxxx>
- Date: Sun, 29 May 2011 11:49:52 +0100
Hi Jim,
I'm not sure if this is what I am thinking either. I think our wires are a
little crossed. This whole debugger thing sounds great, could you tell me
more. I haven't got that far with the Eclipse guide.
Cheers
Roger
----- Original Message -----
From: Corbett, James
To: 'program-java@xxxxxxxxxxxxx'
Sent: Wednesday, May 25, 2011 2:17 PM
Subject: [program-java] Re: Writing and reading class instance variables
Roger:
Ok, I'm not quite understanding what you are up to here but if you want to
read these values during run time so to speak you could run your application in
debug mode. Obviously you would need to set a break point or two and once you
have hit the given line you can inspect the elements in question.
If this is what you are asking, then I can help.
Jim
------------------------------------------------------------------------------
From: program-java-bounce@xxxxxxxxxxxxx
[mailto:program-java-bounce@xxxxxxxxxxxxx] On Behalf Of Roger Woolgrove
Sent: May 24, 2011 12:46
To: program-java@xxxxxxxxxxxxx
Subject: [program-java] Re: Writing and reading class instance variables
Hi Jim,
OK, the xlint compiler error has been dealt with and I'm not sure how I did
it or what I did but it went away.
Next, I am having trouble writing serialised variables, or reading them back
in. When I check the size of the .dat file, it appears to have the information
stored in it as the size suggests this.
What I am trying to do is write several Lists and retrieve said lists. Each
of these Lists is a list of instances of classes, containing the instance
variables set therein.
I have no idea how to read in debugged or otherwise.
I'd just like to be able to save my work at the end of the day with all the
instances of any class saved in a list, then the next day, I'd like to start
off where I left the day before by loading in all the instances of each class
into the Lists.
Does this make anything any clearer?
Many thanks
Roger
----- Original Message -----
From: Corbett, James
To: 'program-java@xxxxxxxxxxxxx'
Sent: Tuesday, May 24, 2011 1:11 PM
Subject: [program-java] Re: Writing and reading class instance variables
Roger:
Do yu want to read these vars in debug mode?
Jim
----------------------------------------------------------------------------
From: program-java-bounce@xxxxxxxxxxxxx
[mailto:program-java-bounce@xxxxxxxxxxxxx] On Behalf Of Roger Woolgrove
Sent: May 20, 2011 18:38
To: JavaProgramming
Subject: [program-java] Writing and reading class instance variables
Hi all,
Still learning and I have written a number of classes in my current
project. I have a class which I use to compile, sort, read and write instances
of everything.
I am using Writer, BufferedWriter etc to write the instances of each class
kept in a Set to file.
However, when reading in a file, I am unable to write the appropriate
syntax to read in certain instance variables.
Those I speak of include
public int tdsOpen;
public Map<String, Integer> tdrOpen;
public List<String> tflOpen;
public SortedSet<String> tmmOpen;
I am successfully using:
tbrClose = lineScanner.next(); to obtain the next item as a String and
vlrClose = lineScanner.nextDouble(); to get the next item as a Double.
So could anyone help me in the correct syntax to obtain the instance
variables as above.
The basic set up I am using for reading in for the purpose of names etc is:
Scanner lineScanner;
String currentLine;
bufferedScanner = new Scanner(new BufferedReader(new
FileReader(aFile)));
while (bufferedScanner.hasNextLine() )
{
currentLine = bufferedScanner.nextLine();
lineScanner = new Scanner(currentLine);
lineScanner.useDelimiter(",");
// then
variableName = lineScanner.next();
etc
Many thanks
Roger
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