Questions tagged as 'java'

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Restful radio button options does not work

I am trying to receive the operation parameter from several radio buttons, according to the value that an operation must be performed (addition, subtraction, multiplication, division, module). But, it just does not work. The page jsp: <...
asked by 28.04.2018 / 14:09
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Error Lexer flex java: error package java_cup.runtime does not exist

I am compiling a file lexer.java that I generated from lexer.flex , it contains the library java_cup.runtime.*; but when copying it this error appears and generates more errors:    private Symbol symbol (int type) error: c...
asked by 28.04.2018 / 10:59
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Spring batch: [SQLITE_BUSY] The database file is locked (database is locked)

I'm doing a Batch that reads SQLite data and transforms it into CSV But every time I run the program it shows the same exception  "[SQLITE_BUSY] The database file is locked (database is locked)" The method that reads the data: @Bean Item...
asked by 17.04.2018 / 18:44
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Autocomplete edit text does not work with accents

I have an autocomplete edit text but it does not match between words without and with an accent, I would like that when putting some word without an accent, I will return the matching options even if they have an accent.     
asked by 17.04.2018 / 20:09
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Summon procedure stored in sql from Java

I would like to know what I am doing wrong, by returning a ResultSet that executes a stored procedure that performs a select on a sql table. I'm working on Java I have a java project that serves as the data layer where I connect to the databa...
asked by 17.04.2018 / 17:30
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how to read character by character in java?

Sorry I have a question, I have to do a class that reads a .txt grades and print the name of the student with the highest average, the problem is that only read line by line and do not know how to read character by character can make you read a...
asked by 18.04.2018 / 03:28
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problem when updating MySQL DB with ResultSet

I have a problem updating my MySQL DB with a ResultSet. Current source attachment. public void insertaTabla(Object[] empleados) throws SQLException{ modelo.insertRow(modelo.getRowCount(), empleados); int ultimaFila = modelo.getRowCou...
asked by 18.04.2018 / 09:06
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Receive an image in Spring-mvc

I'm trying to get an image on my controller in Spring -mvc and I do not know what kind of data I should put @Controller @RequestMapping("/image") public @ResponseBody String RecibeImagen(String datos) { The thing is, I do not know how t...
asked by 18.04.2018 / 18:07
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can anyone help me with this Java problem?

Description The numbers in their binary representation are formed by ones and zeros. We want to know how many pairs of followed ones exist in a number. For example, the number 710 in binary is 1112 and there is a pair of ones. The number 310...
asked by 18.04.2018 / 18:07
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How to generate dates with json?

Good morning, working with this calendar there is a part where you color a few days , then change the code in the dataSource: dataSource: [ { url : 'calendario/dataSource.jsp',...
asked by 17.04.2018 / 16:26