mirror of https://github.com/swig/swig
71 lines
2.3 KiB
Java
71 lines
2.3 KiB
Java
// This example illustrates how C++ classes can be used from Java using SWIG.
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// The Java class gets mapped onto the C++ class and behaves as if it is a Java class.
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public class runme {
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static {
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try {
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System.loadLibrary("example");
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} catch (UnsatisfiedLinkError e) {
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System.err.println("Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" + e);
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System.exit(1);
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}
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}
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public static void main(String argv[])
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{
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// ----- Object creation -----
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System.out.println( "Creating some objects:" );
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Circle c = new Circle(10);
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System.out.println( " Created circle " + c );
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Square s = new Square(10);
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System.out.println( " Created square " + s );
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// ----- Access a static member -----
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System.out.println( "\nA total of " + Shape.getNshapes() + " shapes were created" );
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// ----- Member data access -----
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// Notice how we can do this using functions specific to
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// the 'Circle' class.
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c.setX(20);
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c.setY(30);
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// Now use the same functions in the base class
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Shape shape = s;
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shape.setX(-10);
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shape.setY(5);
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System.out.println( "\nHere is their current position:" );
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System.out.println( " Circle = (" + c.getX() + " " + c.getY() + ")" );
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System.out.println( " Square = (" + s.getX() + " " + s.getY() + ")" );
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// ----- Call some methods -----
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System.out.println( "\nHere are some properties of the shapes:" );
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Shape[] shapes = {c,s};
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for (int i=0; i<shapes.length; i++)
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{
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System.out.println( " " + shapes[i].toString() );
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System.out.println( " area = " + shapes[i].area() );
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System.out.println( " perimeter = " + shapes[i].perimeter() );
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}
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// Notice how the area() and perimeter() functions really
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// invoke the appropriate virtual method on each object.
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// ----- Delete everything -----
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System.out.println( "\nGuess I'll clean up now" );
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// Note: this invokes the virtual destructor
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// You could leave this to the garbage collector
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c.delete();
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s.delete();
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System.out.println( Shape.getNshapes() + " shapes remain" );
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System.out.println( "Goodbye" );
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}
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}
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