mathtest.java

java与windows的com桥,可以用来操作所有的com程序如word或者excel等

package com.jacob.samples.MathProj;

import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.Dispatch;
import com.jacob.com.DispatchEvents;
import com.jacob.com.Variant;

/**
 * This example uses the MathTest sample VB COM DLL under the MathProj directory
 * <p>
 * May need to run with some command line options (including from inside
 * Eclipse). Look in the docs area at the Jacob usage document for command line
 * options.
 */
class MathTest {
	/**
	 * standard main program to run the sample
	 * 
	 * @param args
	 *            command line parameters
	 */
	public static void main(String[] args) {
		MathTest me = new MathTest();
		me.runTest();
	}

	/** default constructor */
	public MathTest() {
	}

	/**
	 * not clear why we need a class and run method but that's the way it was
	 * written
	 */
	public void runTest() {
		// deprecated
		// System.runFinalizersOnExit(true);
		Dispatch test = new ActiveXComponent("MathTest.Math");
		TestEvents te = new TestEvents();
		DispatchEvents de = new DispatchEvents(test, te);
		if (de == null) {
			System.out
					.println("null returned when trying to create DispatchEvents");
		}
		System.out.println(Dispatch.call(test, "Add", new Variant(1),
				new Variant(2)));
		System.out.println(Dispatch.call(test, "Mult", new Variant(2),
				new Variant(2)));
		Variant v = Dispatch.call(test, "Mult", new Variant(2), new Variant(2));
		// this should return false
		System.out.println("v.isNull=" + v.isNull());
		v = Dispatch.call(test, "getNothing");
		// these should return nothing
		System.out.println("v.isNull=" + v.isNull());
		System.out.println("v.toDispatch=" + v.toDispatch());
	}

	/**
	 * 
	 * sample class to catch the events
	 * 
	 */
	public class TestEvents {
		/**
		 * catches the DoneAdd event
		 * 
		 * @param args
		 */
		public void DoneAdd(Variant[] args) {
			System.out.println("DoneAdd called in java");
		}

		/**
		 * catches the DoneMult event
		 * 
		 * @param args
		 */
		public void DoneMult(Variant[] args) {
			System.out.println("DoneMult called in java");
		}
	}

}