Program to solve Simple Quadratic Equation in Java. New to Java - Quadratic Formula: Search: Advanced Forum Search. Adding Gui To My Quadratic Formula Program; Calling Java - New To Java Wiht No Directions. Jul 19, 2013 Introduction This is a tutorial for solving quadratic equations in java. The program is given below that solves the QE. G Data Shredder Desktop Entfernen Vista. The program is not extendable.

The line println('Your first solution is' + QuadPlus(i)); Has two things wrong with it. • It's trying to reference a variable i that is local to a different method. Since i is out of the scope of the main method (the variables you declared called i are only in the scope of the QuadPlus and QuadMinus methods), eclipse can't find a definition for i and so it's throwing your error. • The QuadPlus and QuadMinus methods are defined to take four double parameters each, so when you call them, you have to put four doubles in the parameter brackets. Otherwise, how would the program know what a, b.