I want to know how I can update specific cells in jTable (in Java) using SQL. This my try but it doesn’t work. Note: I am working in Netbeans. Answer finally I’ve found the correct answer the following code will explain every thing thanks for every one helped me
Tag: java
Passing Date from an HTML form to a servlet to an SQL database
I have a problem getting an inputed date (yyyyMMdd) from an HTML form to a sql database via a servlet. The date from the form passes to the servlet as a string but then somehow I need to convert it to date for storing in the database. I have tried a number of methods, date formatter etc.. A possible way
SQL exception preparing query with ORMLite
I am using an ORM (ORMlite) and all my calls are going well until I get the following error. Exception in thread “main” org.h2.jdbc.JdbcSQLException: Syntax error in SQL statement ” SELECT * …
Map database type to concrete Java class
Background Map a column data type to its corresponding Java class. Problem A query returns meta information from a database: For example, this query returns (the self-referential): Where ‘dictionary’ is the schema name, ‘resource_bundle’ is the object_name, and ‘column_name’ is the column_name. It would be great to do something like: And have this query return: Then use JDBC to discover
How to use money data type in Java, SQL, ORM
What are best practises in using money data type in Java application? Money should be in double variable? What about rounding, currencies and so on. Are special libraries for this? And what about ORM and SQL in most popular databases. As I know not in all SQL engines is Money data type. In that case NUMERIC(15,2), DECIMAL(15,2) or REAL data
Expression language to SQL where clause transformations?
We have one domain object, I’m looking for a simple expression language that we can write that will generate SQL. (particulary the where clause of SQL) For example. translates to Does anything like this exist, or do I have to write my own? Please let me know if you think I might as well be searching for the fountain of
Substring in select statement in JPQL
I’m trying to select a substring of column, i.e. select substring(description, 1, 200) from category where id=1 Is it possible to have a substring function within a select statement in JPQL/JPA 2? If yes, how? If no, are there any alternatives? Thanks. Answer There is a scalar expression for this: SUBSTRING(string, start, end) I believe this is allowed in the
Running a .sql script using MySQL with JDBC
I am starting to use MySQL with JDBC. I have 3-4 tables to create and this doesn’t look good. Is there a way to run a .sql script from MySQL JDBC? Answer Ok. You can use this class here (posted on pastebin because of file length) in your project. But remember to keep the apache license info. JDBC ScriptRunner It’s
How to convert java.util.Date to java.sql.Date?
I am trying to use a java.util.Date as input and then creating a query with it – so I need a java.sql.Date. I was surprised to find that it couldn’t do the conversion implicitly or explicitly – but I don’t even know how I would do this, as the Java API is still fairly new to me. Answer tl;dr How