More about methods in Java using NetBeans IDE - A method that accepts parameters and returns a value

(Page 5 of 5 )

Now, I shall use the same application and extend it to include methods accepting parameters and returning values.

Now, open your previous application (or download it from my previous article) and open “MyCalc.java.”  Modify your code so that it looks something like the following:

package MyPack;

/**
 *
 * @author Administrator
 */
public class MyCalc {   

    int x=0;
    int y=0;
    int z=0;   

    /** Creates a new instance of MyCalc */
    public MyCalc() {
    }   

    public void calcSum() {
        z = x + y;
    }   

    public void addValue(int v) {
        x += v;
        y += v;
    }
}

Now, get back to the frame “test.java.”  Double click on it to open and finally double click on the button to open source view.  Within the source view, modify your “buttonActionPerformed” in such a way that it looks like the following:

private void btnShowActionPerformed(java.awt.event.ActionEvent
evt) {
// TODO add your handling code here:
        MyCalc obj1 = new MyCalc();
        MyCalc obj2 = new MyCalc();       

        obj1.x = 10;
        obj1.y = 20;
        obj1.addValue(2);
        obj1.calcSum();       

        obj2.x = 100;
        obj2.y = 200;
        obj2.addValue(1000);
        obj2.calcSum();       

        this.lblMsg.setText("Sum = " + String.valueOf
(obj1.getProduct(2)));
        this.lblMsg2.setText("Sum = " + String.valueOf
(obj2.getProduct(10)));       

    }         

I leave it to the programmers to understand it.

The entire code for this article is freely available in the form of a zip file. That downloadable solution was developed using NetBeans 4.1 IDE together with Microsoft Windows 2003 Standard Edition. I didn’t really test it in any other version or platform. Please follow the respective platform documentation to get it working. This series was dedicated to the beginners who wanted to work with NetBeans IDE.

Any doubts, bugs, errors, suggestions, feedback etc. are highly appreciated at jag_chat@yahoo.com.

DISCLAIMER: The content provided in this article is not warranted or guaranteed by Developer Shed, Inc. The content provided is intended for entertainment and/or educational purposes in order to introduce to the reader key ideas, concepts, and/or product reviews. As such it is incumbent upon the reader to employ real-world tactics for security and implementation of best practices. We are not liable for any negative consequences that may result from implementing any information covered in our articles or tutorials. If this is a hardware review, it is not recommended to open and/or modify your hardware.

Comments On: More about “methods” in Java using NetBeans IDE

· Hello guys. Another extension to the concept of "methods" in java. enjoy   >>> Post your comment now!