Adobe 38043740 Developing Applications - Page 1144

DEVELOPING COLDFUSION 9 APPLICATIONS Using Web Elements and External Objects 1139 Code Employee name is #firstname# #lastname# Description Sets the public fields in the emp object to your values. Gets the field values back from emp object. Displays the retrieved values. Java considerations The following points are important when you write a ColdFusion page that uses a Java class object: • The Java class name is case sensitive. Ensure that the Java code and the CFML code use Employee as the class name. • Although Java method and field names are case sensitive, ColdFusion variables are not case sensitive, and ColdFusion does any necessary case conversions. As a result, the sample code works even though the CFML uses emp.firstname and emp.lastname; the Java source code uses FirstName and LastName for these fields. • If you do not call the constructor (or, as in this example, comment it out), ColdFusion automatically runs the default constructor when it first uses the class. Using an alternate constructor The following ColdFusion page explicitly calls one of the alternate constructors for the Employee object: Employee name is #firstname# #lastname# Employee salary #DollarFormat(Salary)# Employee Job Grade #grade# In this example, the constructor takes four arguments: the first two are strings, the third is a float, and the fourth is an integer. Java and ColdFusion data type conversions ColdFusion does not use explicit types for variables, while Java is strongly typed. However, ColdFusion data does use underlying Java types to represent data. Last updated 1/20/2012