Why is this algorithm in Java not running?

Question

import java.util.Scanner;

public class CalculoSalarioLiquido {

    public static void main (String args []) {

        System.out.println("Programa para calcular o Salário Líquido: ");

        System.out.println("Escreva o Número de Horas Trabalhadas pelo Funcionário: ");
        Scanner sc = new Scanner (System.in);
        double numerodehorastrabalhadas = sc.nextInt();

        System.out.println("Escreva o Número de Horas Extras Trabalhadas pelo Funcionário: ");
        double numerodehorasextras = sc.nextInt();

    **//Tem vários erros nestes quatro System.out.println. Estou com problemas na importação dos métodos, para depois imprimir os resultados. Erros de not a statement.** 
        System.out.println ("Salário Bruto: " (calcularsalariodofuncionario(numeroDeHorasTrabalhadas,numeroDeHorasExtras)));
        System.out.println ("Imposto de Renda: "calcularImpostodeRenda(salariobruto));
        System.out.println ("Seguro Social: " calcularSeguridadeSocial(salariobruto));
        System.out.println ("Salário Líquido: " calcularSalarioLiquido(salariobruto, seguridadesocial, impostoderenda));
    }

    public static double calcularsalariodofuncionario (double numeroDeHorasTrabalhadas, double numeroDeHorasExtras) {

        double salarioinicial = numerodehorastrabalhadas * 18.6;
        double salariosdashorasextras = 5.7 * numerodehorasextras;

        double salariobruto = salarioinicial + salariosdashorasextras;
        return salariobruto;
        }

    public static double calcularImpostoDeRenda(double salariobruto){
        double impostoderenda = salariobruto * 0.49;
        return impostoderenda;
    }

    public static double calcularSeguridadeSocial (double salariobruto){
        double seguridadesocial = salariobruto * 0.94;
        return seguridadesocial;
    }

    public static double calcularSalarioLiquido (double salariobruto, double seguridadesocial, double impostoderenda){
    double salarioliquido = salariobruto - seguridadesocial - impostoderenda;
    return salarioliquido;
    }
}

How to correct?

Answer 1

The code is full of typos. Programming is detail. You need to organize the code, pay attention to what you are typing. You don’t just drop a text and get it done. You have to pay attention, be careful, be capricious. You have to read the mistakes, interpret them and correct them.

You can be mad at me, but I’ll tell you something that’s the most important thing right now and what’s gonna help you the most: you have to change the way you program, what you’re doing is just writing code, not creating programs. That way won’t get you anywhere.

Analyze character by character I changed. Yes, you will spend half an hour doing this, but you will learn something. If you think it’s a waste of time to do that, you’ll continue to struggle. Most are only case-sensitive, but also lack of concatenation of the text to be printed and lack of storage of function results in local variables.

You actually need to adopt a variable name pattern. Look to use camelCase in all variable names. Be consistent! I didn’t do it because it’s too much wrong, do it as an exercise. Be sure to do it! It may seem silly to organize like this, but over time you will realize that it is very important to facilitate reading and find errors more easily. All experienced programmers organize their code a lot. Start doing it now.

Nor will I mention the wrong use of double for monetary values, is not ready for this yet.

import java.util.Scanner;

class CalculoSalarioLiquido {
    public static void main(String args []) {
        System.out.println("Programa para calcular o Salário Líquido: ");
        System.out.println("Escreva o Número de Horas Trabalhadas pelo Funcionário: ");
        Scanner sc = new Scanner(System.in);
        double numerodehorastrabalhadas = sc.nextInt(); // <===== nome ruim
        System.out.println("Escreva o Número de Horas Extras Trabalhadas pelo Funcionário: ");
        double numerodehorasextras = sc.nextInt();
        double salariobruto = calcularsalariodofuncionario(numerodehorastrabalhadas, numerodehorasextras);
        double impostoderenda = calcularImpostoDeRenda(salariobruto);
        double seguridadesocial = calcularSeguridadeSocial(salariobruto);
        System.out.println("Salário Bruto: " + salariobruto);
        System.out.println("Imposto de Renda: " + impostoderenda);
        System.out.println("Seguro Social: " + seguridadesocial);
        System.out.println("Salário Líquido: " + calcularSalarioLiquido(salariobruto, seguridadesocial, impostoderenda));
    }

    public static double calcularsalariodofuncionario(double numeroDeHorasTrabalhadas, double numeroDeHorasExtras) { // Nomes bons
        double salarioinicial = numeroDeHorasTrabalhadas * 18.6;
        double salariosdashorasextras = 5.7 * numeroDeHorasExtras;
        double salariobruto = salarioinicial + salariosdashorasextras;
        return salariobruto;
    }

    public static double calcularImpostoDeRenda(double salariobruto) {
        double impostoderenda = salariobruto * 0.49;
        return impostoderenda;
    }

    public static double calcularSeguridadeSocial(double salariobruto) {
        double seguridadesocial = salariobruto * 0.94;
        return seguridadesocial;
    }

    public static double calcularSalarioLiquido(double salariobruto, double seguridadesocial, double impostoderenda) {
        double salarioliquido = salariobruto - seguridadesocial - impostoderenda;
        return salarioliquido;
    }
}

Behold working in the ideone. And in the repl it.. Also put on the Github for future reference.

Answer 2

In order to use a variable, it has to be in the scope of the method, in this case, the declaration of the variable salariobruto was missing. Java is a language that has "Case sensitive", IE, has difference between high and low-case letters. The parameters you are passing in System.out.println("Gross Salary: "(calcularsalariodofuncionario(numeroDeHorasTrabalhadas,numeroDeHorasExtras)); is different from what was declared, and to show String and values on the same line you have to use the + sign to concatenate the values. The names of your metedos that you are calling in System.out.println are also different from what was declared. Make these fixes that will work.