Evaluate mathematical functions in Java with JEP library

Programming can facilitate many tasks in them including Mathematics, although many will know that there are libraries that are imported into our Java Project where there are a set of Classes, which have a series of Methods and Attributes. In short, these libraries contain codes that facilitate us in the elaboration of the Project.

For this small Project we will use the JEP.jar library in the NetBeans Development Environment

WE WILL USE THE VERSION: jep-java-3.4-trial.jar       Download

1. IMPORT LIBRARY JEP.

2. INSERT JAVA CODE.

*For example we will solve this mathematical exercise: "sin(x^2) + x" cuando x =25 

package Ejemplos;

import com.singularsys.jep.JepException;
import org.nfunk.jep.JEP;

public class Evaluar_Funcion {

    public static void main(String[] args) throws JepException {
        
        JEP j = new JEP();
        j.addStandardConstants();
        j.addStandardFunctions();
        j.addVariable("x", 25); //("variable", numero a evaluar) 
        j.parseExpression("sin(x^2)+x");
        
        //Si existiere algun error.
        if(j.hasError()){
             System.out.println(j.getErrorInfo()); // Imprimir error.
        }
        
        System.out.println(j.getValue()); //Imprimir resultado.   
    }
    
}