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calling a java class from matlab

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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()
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.
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

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