Passing Matrix List to Java Method ,error:No method 'list_method' with matching signature found for class

1 Ansicht (letzte 30 Tage)
Hi,
On Matlab Part :
matrix =[22,11,33,44,22,44,22,54]; % 1-by-8 matrix
if true
% code
import edu.lipreading.*;
import java.util.Vector;
training = MainMethod;
training.list_method(matrix);
end
On Java Part
if true
% code
public void list_method(List<Integer> points){
System.out.println("Welcome to List Method");
}
end
Note : When I have run my matlab code i got error like No method 'list_method' with matching signature found for class 'edu.lipreading.MainMethod'. // edu.lipreading Package Name ,MainMethod Class name

Akzeptierte Antwort

Malcolm Lidierth
Malcolm Lidierth am 4 Mär. 2014
Try
public void list_method(double[] points){
...
}
Note that MATLAB vectors/matrices contain doubles by default and are passed to Java as a copy.
  3 Kommentare
SAMEER ahamed
SAMEER ahamed am 5 Mär. 2014
Bearbeitet: SAMEER ahamed am 5 Mär. 2014
When I have change from java method argument List to double again i have got error below like
if true
% code
matrix
[12,34,113,34,61,1,61,66]
No method 'list_method' with matching signature found for class
'edu.lipreading.MainMethod'.
end
SAMEER ahamed
SAMEER ahamed am 5 Mär. 2014
Bearbeitet: SAMEER ahamed am 5 Mär. 2014
When I have change from java method argument List to double again and again i have got error below like . Please reply me any idea ? thanks . please review previous forum for understanding ?
if true
% code
matrix
[12,34,113,34,61,1,61,66]
No method 'list_method' with matching signature found for class
'edu.lipreading.MainMethod'.
end

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (1)

Malcolm Lidierth
Malcolm Lidierth am 5 Mär. 2014
Bearbeitet: Malcolm Lidierth am 5 Mär. 2014
OK, if you are stuck with a List java-side, you need to create a list MATLAB-side.
In MATLAB:
  • Create a concrete list class
list=java.util.ArrayList()
  • Add the elements to it
for k=1:length(matrix)
list.add(int32(matrix(k)));
end
  • Check its size:
>> list.size()
ans =
8
Note that the "<Integer>" annotation in your Java code is only relevant at compile time. Casting the MATLAB variable to int32 above ensures that the ArrayList will add a java.lang.Integer to the list at run-time. You could do that explicitly using
list.add(java.lang.Integer.valueOf(matrix(k)));
instead.
Within MATLAB you can access the list elements using "get":
e.g.
list.get(0)
Note that when MATLAB receives the returned Integer, it creates a MATLAB primitive double from it:
>> class(list.get(0))
ans =
double
Java will not - it will use the java.lang.Integer instance in the list.
  1 Kommentar
SAMEER ahamed
SAMEER ahamed am 6 Mär. 2014
Bearbeitet: SAMEER ahamed am 6 Mär. 2014
Thanks for reply me below i have mentioned my full code , u can easily solve my issues.
On Matlab code-side
matrix =[33,122,3,2,2,3,2,4];
outsprintf=sprintf('%d,',matrix);
outsprintf=sprintf('[%s\b]',outsprintf);
disp(outsprintf);
here result is [33,122,3,2,2,3,2,4] like getting so this values i need to pass java method arguments List<Integer> points.
Note 2:About Java Class Please Look at my Attached file .

Melden Sie sich an, um zu kommentieren.

Kategorien

Mehr zu Call Java from MATLAB finden Sie in Help Center und File Exchange

Tags

Noch keine Tags eingegeben.

Produkte

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by