import net.objecthunter.exp4j.ExpressionBuilder;
import net.objecthunter.exp4j.Expression;
import net.objecthunter.exp4j.ValidationResult;
import net.objecthunter.exp4j.tokenizer.UnknownFunctionOrVariableException;
public class MathExpressionParser {
public static void main(String[] args) {
try {
Expression expression = new ExpressionBuilder("2*x + sin(y)")
.variables("x", "y")
.build();
expression.setVariable("x", 5.0);
expression.setVariable("y", Math.PI);
double result = expression.evaluate();
} catch (UnknownFunctionOrVariableException e) {
} catch (ValidationResult e) {
}
}
}
shell
