I have to write a read method for a quadratic class where a quadratic is entered in the form ax^2 + bx + c. The description for the class is this:

Add a read method that asks the user for an equation in standard format and set the three instance variables correctly. (So if the user types 3x^2 - x, you set the instance variables to 3, -1, and 0). This will require string processing you have done before. Display the actual equation entered as is and properly labeled as expected output.

I was able to do the ax^2 part by using string manipulation and if else statements. But I am not sure how to do the bx and c parts of the equation because of the sign that could be in front of bx and c. Here is how I did the ax^2 part of the method.

public void read() { Scanner keyboard = new Scanner(System.in); System.out.println("Please enter a quadratic equation in standard format."); String formula = keyboard.next(); String a = formula.substring(0, formula.indexOf("x^2")); int a2 = Integer.parseInt(a); if (a2 == 0) { System.out.println("a = 0"); } else if (a2 == 1) { System.out.println("a = 1"); } else { System.out.println("a = " + a2); } }

Feel free to make edits and write new code for the method.

Any help would be greatly appreciated.