Home / Questions / 301512
Accepted
Pedro
Asked: 2020-10-17 19:55:59 +0800 CST 2020-10-17 19:55:59 +0800 CST

Error in Switch case Java?

  • 772

I am doing a simple exercise but it shows me some error icons

enter image description here

Can you explain to me what is being done wrong, I am following all the correct steps, I do not observe that there are code syntax errors.

This is the code

package exampleswitch;

import javax.swing.*;

public class ExampleSwitch {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        char cuestionario;
        cuestionario = 'Tema:';
        int semana;
        semana = 1;

        switch(semana){
            case 1:
                cuestionario += 'Introducción a la programación';
                break;
            case 2:
                cuestionario += 'Secuenciación y selección';
        }

    }

}
java

3 Answers

  1. You are defining the quiz variable as a char. That is, a character. For multiple characters, you need a string (or an array of char, but I don't think that's what you're looking for).

    Change the definition of the variable to be of type string.

    Edit because there is a very important comment: when handling multiple characters, double quotes are used to demarcate them.

    String cuestionario;
cuestionario += "Introducción a la programación";
    • 14
  2. Best Answer

    For your case, it is not possible to use char. CharIt is used to store a character such as 'a'or 'A'with single quotes.

    Now to store a set of characters, use String. This type is usually enclosed in double quotes""

    I leave your example of how it would look:

    import javax.swing.*;

public class ExampleSwitch {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        //Ten en cuenta que puedes declarar e inicializar la variable en una misma linea
       //Añade un espacio en blanco para que al concatenar no salga junta las palabras
        String cuestionario = "Tema: ";
        int semana;
        semana = 1;

        switch(semana){
            case 1:
                cuestionario += "Introducción a la programación";
                break;
            case 2:
                cuestionario += "Secuenciación y selección";
                break;//Añadido tambien el break en el 2º case
        }
    }
}

    I have left a series of comments on your code. If you have any questions/problems, don't be afraid to ask.

    • 3

  3. You are defining wrong, it should be:

    String cuestionario;
cuestionario = "Tema:";
    • 2