Questions tagged as 'netbeans'

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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
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Display selected data from an html combobox

I have a question about html in NetBeans , I have the following values in my combobox : .ZONA : South Zone, North Zone, East Zone, West Zone .Quantity : 1, 2 .Banco : BCP, BBVA, INTERBANK, SCOTIABANK I would like...
asked by 07.05.2018 / 09:14
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The project disappears when entering netbeans again

The problem I have is that when I create a new project in netbeans and paste the classes already done in the project folder, it only appears in netbeans while it is open, if I close it and reopen it the project disappears. Another problem I h...
asked by 06.05.2018 / 03:24
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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
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Because I find NullPointerException in Netbeans 8.2 with Ireports in a single report

I generate this error in a specific report in the others no .. and I do not understand why ... this is my procedure to call the report, that only happens when I run the application, because in the netbeans with the ireport plugin if the report g...
asked by 24.04.2018 / 23:27
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Why is the console running?

I have the following problem, as a task I need to simulate a videogame of fighters and monsters, I did the battle class that is where they are supposed to fight, but in the Main class when creating the battle instance, it does not finish executi...
asked by 22.04.2018 / 07:17
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How to print a rectangular matrix? java [duplicated]

Hi, I would like to know how I can print this 2x3 matrix since it always prints it 2x2 public static void main(String[] args) { double notas[][]= new double[2][3]; int i; int j; String acum="\n"; for(i=0;i<notas.length;i++) { fo...
asked by 29.04.2018 / 22:50
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Libraries ceased to exist after removing the cache of my netbean 8.2

Could you help me? trying to solve a problem I eliminated the cache of my netbeans 8.2, after doing it they stopped working these two projects I had before working properly, he tells me that those two bookstores do not exist. I do not know...
asked by 30.04.2018 / 18:42
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How to properly use RMI?

I have a base code with interfaces and some classes, the application in general has to simulate an agenda and the only thing that had to be modified were a few classes because the interfaces and some methods were ready to be used, however when t...
asked by 16.04.2018 / 04:47
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Sum of a column in a table and show it at the end of the summed column. JAVA NETBEANS

Hello everyone I have a difficulty with this code. what I want to do is that when the query is made to the BD to return it to the JTABLE since it is queried in a range defined by the user. I want the column 'amount' to be added automatically and...
asked by 18.04.2018 / 23:21