Questions tagged as 'poo'

Tagged questions
0
answers

how to import excel data into 3 tables?

I happen to have 3 tables which are: person: person_id (int), person (string), document (int). animals: id (int), id_person, id_eps, pet (string), age (int). eps: id_eps (int), name (string), cod_eps (int) The fact is that the...
asked by 24.05.2018 / 00:14
3
answers

How to select specific content from one file and write it in another?

I have to read a file and then select specific content, write it in another file. The file that I have to read has several lines and each line has this format:     "content1", "content2", "content3", "content4", "123" I have to select the con...
asked by 18.05.2018 / 20:40
2
answers

My exception created by my own java poo does not work

public static void main(String[] args) throws IOException { Operaciones.cargarDatosClientes(); Operaciones.imprimirDatos(); } import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.I...
asked by 13.05.2018 / 02:11
2
answers

ERROR "class ... does not have a main method

I have a small problem with this error ... at the moment of throwing it indicates to me that I do not have a method ... which if I have, the truth is that I do not find the error, I need your help I leave the code for you if you can help me pa...
asked by 07.05.2018 / 20:38
1
answer

Query about using try catch in java. Netbeans

public static void main(String[] args) { Scanner entrada = new Scanner(System.in); int edad; boolean repetir = true; while (repetir) { System.out.println("introduce edad"); try { edad = entrada.next...
asked by 04.05.2018 / 03:44
1
answer

Limit the number of decimals

If I want to enter the price $ 6.00 How do I limit the number of decimals? Using: dts.setPrecio(Double.parseDouble(txtprecioExamen.getText()));     
asked by 05.05.2018 / 11:55
1
answer

Transactions with PDO and Singleton

I have the pattern singleton and a class ticket : public function registrar(){ //me conecto a la bd $conexion = Conexion::singleton_conexion(); try{ $conexion->beginTransaction(); $queryid="select comprobante from identi...
asked by 29.04.2018 / 17:33
2
answers

How to compare two different values in java? Example [+ and -]

What I want to do is compare to my current operator + or any other arithmetic operator with any of the operators that I have previously that are also arithmetic, I have 4+- , this here is wrong so I want to make it detect if ther...
asked by 25.04.2018 / 02:46
1
answer

The monkey's game

I started to practice a bit with the POO, because I do not master the stage very much and I wanted to put into practice some knowledge that I have. Make a small game where a monkey is given to eat fruit (Parent class), among these fruits you hav...
asked by 22.04.2018 / 18:27
1
answer

He asks me for two values at the same time [duplicated]

I have a problem, I can not enter a value for a variable keyboard because I get 2 messages at the same time package libro; import java.util.*; public class Main { public static void main(String[] args) { //libro1 Scan...
asked by 29.04.2018 / 22:12