User`s manual

Handling Data Returned from a Java Method
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method of the class to perform the conversion. If you write your own class
definitions, then you can make use of this feature by writing a
toChar method
that performs the conversion according to your own needs.
Note If the class of the specified object is not java.lang.String and it does
not implement a
toChar method, then an attempt to convert the object using
the char function results in an error in MATLAB.
The syntax for the
char command is as follows, where object is a Java object
or Java array of objects.
char(object);
Converting to a MATLAB Structure
Java objects are similar to the MATLAB structure in that many of an object’s
characteristics are accessible via field names defined within the object. You
may want to convert a Java object into a MATLAB
structure to facilitate the
handling of its data in MATLAB. Use the MATLAB
struct function on the
object to do this.
The syntax for the
struct command is as follows, where object is a Java object
or Java array of objects.
struct(object);
The following example converts a java.awt.Polygon object into a MATLAB
structure. You can access the fields of the object directly using MATLAB
structure operations. The last line indexes into the array, pstruct.xpoints,
to deposit a new value into the third array element.
polygon = java.awt.Polygon([14 42 98 124], [55 12 -2 62], 4);
pstruct = struct(polygon)
pstruct =
npoints: 4
xpoints: [4x1 int32]
ypoints: [4x1 int32]