MATLAB BUILDER JA 2 Podręcznik Użytkownika Pobierz pdf (Strona 49)

Creating an Instance of the Class

As with any Java class, you ne ed to instantiate th e classes you create with

MATLAB Builder for Java before you can use them in your p rogram.

Suppose you build a component named

MyComponent with a class named

MyClass. Here is an e xample of creating an instance of the MyClass class:

MyClass ClassInstance = new MyClass();

Code Fragment: Instantiating a Java Class

The following Java code shows how to create an instance of a class that was

built with MATLAB Builder for Java. The application uses a Java class that

encapsulates a MATLAB function,

myprimes.

* usemyclass.java uses myclass

/* Import all com.mathworks.toolbox.javabuilder classes */

import com.mathworks.toolbox.javabuilder.*;

/* Import all com.mycompany.mycomponent classes */

import com.mycompany.mycomponent.*;

* usemyclass class

public class usemyclass

{

/** Constructs a new usemyclass */

public usemyclass()

{

super();

}

/* Returns an array containing the primes between 0 and n */

public double[] getprimes(int n) throws MWException

{

myclass cls = null;

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MATLAB BUILDER JA 2 Podręcznik Użytkownika Strona 49