com.mathworks.toolbox.javabuilder.MWNumericArray cannot be cast to java.lang.Double
@RestController public class WcController { @RequestMapping("/getWc") public double getWc() throws MWException { WcFunction wcFunction = new WcFunction(); Object[] a=wcFunction.Wcsolution(1,400.00); double b= (double) a[0]; return b; }