MATLAB BUILDER JA 2 Guia do Utilizador descarregar pdf (Página 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;

3-3

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 291 292

Sem comentários

MATLAB BUILDER JA 2 Guia do Utilizador Página 49