# The Java EE 7 Tutorial

# 33.2 Modifying the Java EE Application

GlassFish Server supports iterative development. Whenever you make a change to a Java EE application, you must redeploy the application.

## 33.2.1 To Modify a Class File

To modify a class file in an enterprise bean, you change the source code, recompile it, and redeploy the application. For example, to update the exchange rate in the `dollarToYen` business method of the `ConverterBean` class, you would follow these steps.

To modify `ConverterServlet`, the procedure is the same.

1. Edit `ConverterBean.java` and save the file.

2. Recompile the source file.

   - To recompile `ConverterBean.java` in NetBeans IDE, right-click the `converter` project and select Run.

     This recompiles the `ConverterBean.java` file, replaces the old class file in the build directory, and redeploys the application to GlassFish Server.

   - Recompile `ConverterBean.java` using Maven.

     1. In a terminal window, go to the tut-install`/examples/ejb/converter/` directory.

     2. Enter the following command:

            mvn install

        This command repackages and deploys the application.