IBM Mobilefirst 7.0 -Java Adapter Invocation Client Side - ibm-mobilefirst

Question

The following is an addition program to add two numbers.
my Server-side coding and Client-side coding as follows.
it throws error like
ReferenceError: com is not defined at (compiled_code):24
To work with Java Adapter Http Adapter is mandatory.
Server.js and client.js as follows
package com.mss;
public class Calculator {
public int addTwoIntegers(String first, String second){
int c=Integer.parseInt(first)+Integer.parseInt(second);
return Integer.toString(c);
}
}
function addTwoIntegers(){
alert("hi");
var calcInstance = new com.mss.Calculator();
return {
result : calcInstance.addTwoIntegers("1","2")
};
}

Answer 1

To work with Java Adapter Http Adapter is mandatory
The above sentence in false. In MFP 7.0 you have both JavaScript adapters and Java adapters. To use a Java adapter you are not required to use HTTP adapter. That doesn't make sense. They are two different types of adapters.
Read the following tutorials: Server-side development
Have you taken a look at the UsingJavaInAdapter adapter in the Adapters sample? It demonstrates exactly what you're trying to do.
Did you actually create such a com.mss Java class and placed it in the server\java folder of your MFP project?
The question is just missing information.
Read the Java in JavaScript adapters tutorials.
Java class
package com.sample.customcode;
public class Calculator {
// Add two integers.
public static int addTwoIntegers(int first, int second){
return first + second;
}
// Subtract two integers.
public int subtractTwoIntegers(int first, int second){
return first - second;
}
}
Adapter implementation
function addTwoIntegers(a,b){
return {
result: com.sample.customcode.Calculator.addTwoIntegers(a,b)
};
}
function subtractTwoIntegers(a,b){
var calcInstance = new com.sample.customcode.Calculator();
return {
result : calcInstance.subtractTwoIntegers(a,b)
};
}