Develop an appropriate Java Postfix calculator class.

In Java using Eclipse IDE, please provide an example for the following exercise:

Develop an appropriate Java Postfix calculator class. Your program should accept at least five elements (data1, data2, data3, data4, data5) and perform an appropriate postfix operation given the following scenarios: data1 data + data3 * data4 -data1 data * data3 * data1 - / data4 data5* + Use the following values for each input: data1 = 1; data2 = 2; data3 = 4 data4 = 5 data5 = 3 Ensure that your program has the necessary class and a test class.