http://imagej.273.s1.nabble.com/How-to-read-and-write-files-using-a-java-plugin-tp5009393p5009467.html
> Hi Avital,
>
> if you know what to write in a macro, here is a simple way how to find the
> corresponding commands for a plugin:
>
> - Have a look at the static IJ class. Many macro commands have equivalents
> there.
> - If you don't find it in IJ, have a look at ij.macro.Functions.java.
> There you will find the code executed upon calling one of the ImageJ
> built-in macro functions.
>
> Example:
>
> Reading a file into a string, macro command File.openAsString(path):
> IJ.openAsString(String path)
>
> For writing a file, you may find some code in
> ij.macro.Functions.openFile(), closeFile() etc:
>
> FileOutputStream fos = new FileOutputStream(path);
> BufferedOutputStream bos = new BufferedOutputStream(fos);
> PrintWriter writer = new PrintWriter(bos);
>
> writer.println(myString);
>
> writer.close();
>
> ---
>
> Another option is using java.util.Properties; this is essentially a
> Hashtable that can be used to nicely save pairs like
> myKey1=myValue1
> myKey2=myValue2
> or an XML file ('flat' XML file with key-value pairs only, no
> hierarchies). Values must be Strings, but you can convert them back to
> numbers with, e.g., ij.utils.parseDouble.
>
> In that case, you can call ij.io.SaveDialog.java and ij.io.OpenDialog.java
> for the file dialogs, then create the java.io.FileOutputStream.html and
> FileInputStream streams required by the Properties.store and
> Properties.load.
>
> Michael
> ________________________________________________________________
> On Aug 28, 2014, at 10:40, Avital Steinberg wrote:
>
> > Hi,
> > My plugin has a function (function A) that calculates results that I
> would
> > like to save in a file. These results will be used by another function,
> > which means that function B has to read this file (that should be chosen
> by
> > the user). Function B will use the parameters that were saved in it to do
> > calculations.
> >
> > It would have been easy to do with the ImageJ macro, but I am trying to
> do
> > it in a Java plugin. What is the best way to do it?
> >
> > Thank you,
> > Avital
>
> --
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