Is there a way to convert a string or character field in java to an math operator? [duplicate]

Question

In relatively new to java though i have been programming for sometime now. i figure doing a fun math project for my daughter to help her learn math would be an easy way to test what java is capable of. So in effort to try and learn efficient ways of doing programming, Is there a way to convert a string or character value from (/,,-,+) to an operator /-+?

example:

 string/char textin = "" text = JOptionPane "input box" ("*") int results = 0 int num1 = 9 int num2 = 5 public static void calc(int num1,int num2, string/char textin) { results = num1 "some method"(textin) num2 // convert "*" to * }

The purpose of this question is to reduce the amount of calculations needed to due all four operators. To use one generic method to do all four operators. Is this possible?

searching the web is your friend: stackoverflow.com/questions/3422673/… — Tom Freudenberg
– Tom Freudenberg, Commented Oct 31, 2015 at 23:54

wvdz · Accepted Answer · 2015-10-31 23:50:25Z

No, that's not possible. The closest you can come is define a helper method that interprets the string as an operator and applies it.

public static double operate(double x, double y, String operator) { switch(operator) { case "*": return x*y; case "/": return x/y; // etc. default: throw IllegalArgumentException("Unknown operator"); } }

No problem @Kyle5385, If this answers your question, don't forget to accept it as the correct answer.

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