Introduction
STK refers to SIM Tookit.
SAT refers to SIM Application Toolkit
Both terms are interchangeable.
Java Sample Code
//To display a request from STK menu for an input
vMOBITEK = STKAPI.invoke("InputRequest");
sMOBITEK = vMOBITEK.getString();
System.out.println ("STK Menu has requested for an input: " + sMOBITEK + ".");
//To submit an input to STK Menu
strInput = "OK"
vMOBITEK = STKAPI.invoke("InputSubmit",strInput);
bMOBITEK = vMOBITEK.getBoolean();