How can I get com.mathworks.engine.* package ?

Here is my code

 import com.mathworks.engine.*;
 import java.util.Arrays;
 public class javaPutVar {
    public static void main(String[] args) throws Exception {
        MatlabEngine eng = MatlabEngine.startMatlab();
        eng.putVariable("x", 7.0);
        eng.putVariable("y", 3.0);
        eng.eval("z = complex(x, y);");
        String[] w = eng.feval("who");
        System.out.println("MATLAB workspace variables " + Arrays.toString(w));
        eng.close();
    }
}

This code is showing error:

 javaPutVar.java:1: error: package com.mathworks.engine does not exist
 import com.mathworks.engine.*;
^
javaPutVar.java:6: error: cannot find symbol
        MatlabEngine eng = MatlabEngine.startMatlab();
        ^
  symbol:   class MatlabEngine
  location: class javaPutVar
javaPutVar.java:6: error: cannot find symbol
        MatlabEngine eng = MatlabEngine.startMatlab();
                           ^
  symbol:   variable MatlabEngine
  location: class javaPutVar
3 errors

How can I fix this errors? How can I get com.mathworks.engine.* package ?

Answer 1

[Steven Lord]

Are you using release R2016b or later? According to the documentation and the Release Notes that's when this functionality was introduced.

[Al Mamun]

I am using R2017a

[Al Mamun]

How can I get this package ?

[Steven Lord]

You should already have it. Have you performed the setup steps necessary to get started using the API?

1. Open the documentation in your installation using the doc command.
2. In the documentation for MATLAB, click on "Advanced Software Development".
3. On the "Advanced Software Development" page click on "MATLAB API for Other Languages".
4. On the "MATLAB API for Other Languages" page click on "MATLAB Engine API for Java".
5. On the "MATLAB Engine API for Java" page click on "Build Java Engine Programs" in the Getting Started section of the Topics.
6. Follow the steps under the General Requirements section and then read the section for the operating system you're using.

[Al Mamun]

 Thank you, your answer is highly helpful. But when I try to run my code this error is showing.