String Math Expression Calculator

String Math Expression Calculator

Released 7 years ago , Last update 7 years ago

Calculates string math expressions from user input or other sources. Includes calculator UI component for out of the box usefulness.

Expression calculator

  • Ease to use: Calc.eval("(100+1)*(100-1)"); // returns 9999
  • Supported parentheses. For example:2*(5-3)
  • BigDecimal numbers. For example: 1000000000000000000000000+2000000000000000000000000 // One Septillion + Two Septillion
  • Simple ready-to-use UI component included (with full source code for customization):

simple calculator


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Modified Personal License

  • Perpetual license

  • Unlimited projects

  • Can distribute code and binary products

  • Commercial use


Use UI Component:

import com.programmisty.calc.*;

public class Sample1 {
    public static void main(String a[]) throws Exception {
       // Change UI Look And Feel (If needed)  //UIManager.setLookAndFeel("");
        JFrame frame = new JFrame("Simple Calculator");

        // Important! ADD CALCULATOR PANEL
        frame.getContentPane().add(new CalculatorPanel());

Use API :

import com.programmisty.calc.*;
import java.math.BigDecimal;
public class Sample2 {
    public static void main(String args[]) throws Exception {
           BigDecimal a = Calc.eval("100+100/5");
           double x = Calc.deval("100+100/4");
           int y = Calc.ieval("100+100/4");
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  • N nigger 1 month ago
  • RG Roedy Green 6 years ago
    This would be even more useful as a posted applet so you could use it without installing.