Clear Filters
Clear Filters

calling a java class from matlab

1 view (last 30 days)
I have a java class, and I need to call it from matlab to implement a document. is that you have an idea?

Accepted Answer

Richard Alcock
Richard Alcock on 6 May 2011
It depends on whether it has been packaged into a .jar file or is a .class file.
Your class is called hello.HelloWorld
If it's in a file called c:\work\hello\HelloWorld.class, you need to add the root directory to the class path.
javaaddpath c:\work\
function Test()
hello.HelloWorld();
end
On the other hand, if it's in a c:\work\hello.jar file, you add the jar file to the class path.
javaaddpath c:\work\hello.jar
After that's it's the same.
  11 Comments
Neha
Neha on 21 May 2011
Hey Richard,
I have this query I'm troubling since long with it.
I need to invoke a java class in Matlab, and need to store the returned string value in a variable in Mtalab. for this query i got following solution from a website, plz tell me where its going wrong:
>>
The Hello World solution by The MathWorks provides some insights on how to run a simple 'Hello World' java application inside MATLAB. You may change the Java code a bit, in order to have a method that returns a String.
public class HelloWorld
{
public String hello()
{
String helloWorld = "Hello World!";
return helloWorld;
}
}
Once this simple class is compiled and on the MATLAB JVM classpath create an instance and invoke the method with the following two commands.
o = HelloWorld
output = o.hello;
The String returned by the HelloWorld instance is assigned to the MATLAB variable output.
<<
The command described to invoke java code in matlab(ie o=HelloWorld) gives error.
Richard Alcock
Richard Alcock on 24 May 2011
I need some more information:
1. What is the full path to HelloWorld.class file?
2. What is the exact javaaddpath command you ran in MATLAB?
3. What error are you getting from MATLAB

Sign in to comment.

More Answers (0)

Categories

Find more on Java Package Integration in Help Center and File Exchange

Products

Community Treasure Hunt

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

Start Hunting!