We have a requirement for persisting, using Hibernate, versioned Java objects into an Oracle database such that each version has a valid-from and valid-until timestamp. This is so we can query for objects as-at a specific time. Does Hibernate or Oracle 11g (or anything else) provide anything that would simpli…
Tag: java
Stored Procedure returning multiple tables to spring jdbc template
Iam calling a stored procedure from my Spring DAO class using JdbcTemplate. My problem is that, stored procedure returns multiple tables. Is there a way to access multiple tables using Spring JdbcTemplate. If I use jdbcTemplate.queryForList(myStoredProc, new Object[]{parameters} iam getting only first table f…
Running Java gives “Error: could not open `C:Program FilesJavajre6libamd64jvm.cfg'”
After years of working OK, I’m suddenly getting this message when trying to start the JVM: I tried uninstalling, and got a message saying a DLL was missing (unspecified) Tried re-installing, all to no avail. At the same time, when trying to start Scala I get: Checked %JAVA_HOME% and %path% – both …
JDBC connection to SQL Server 2005 Instance running on remote machine
I am trying to connect to sql server 2005 instance running on a remote machine from my spring web application. This web application is running in tomcat server. Earlier When I connected to sql server 2000, it worked fine. I used msbase.jar, mssqlserver.jar, msutil.jar to connect to sql server 2000. My connect…
URL decoding: UnsupportedEncodingException in Java
What I understand from the documentation is that UnsupportedEncodingException can only be thrown if I specify a wrong encoding as the second parameter to URLDecoder.decode(String, String) method. Is it so? I need to know cases where this exception can be thrown. Basically, I have this code segment in one of m…
JaxbRepresentation gives error “doesnt contain ObjectFactory.class or jaxb.index”
I am trying to create a sample test application which converts an object to JaxbRepresentation. But when I try to run this, it gives me an error. Main.java file TestResource.java file SampleResponse.java file When I run this on the server, it throws the following error: Please someone help!!! Answer To get ri…
opencsv in java ignores backslash in a field value
I am reading a csv file using opencsv. I am ignoring the first line of; the csv file is tab separated with some values enclosed in double quotes. The problem occurs when I read the values of a column that has the ” character, this is stripped out of the value. For example in original file: It becomes as…
is there a ‘block until condition becomes true’ function in java?
I’m writing a listener thread for a server, and at the moment I’m using: With the code above, I’m running into issues with the run function eating all the cpu time looping. The sleep function works, but it seems be a makeshift fix, not a solution. Is there some function which would block unt…
java: save string as gzip file
I’m java beginner, I need something like this: String2GzipFile (String file_content, String file_name) String2GzipFile(“Lorem ipsum dolor sit amet, consectetur adipiscing elit.”, “lorem.txt.gz”) I …
Java heap space in a looped function
Hi I have a java application that is processing a number of records from a database. Now after processing about a 160 of these the java runs throws a “OutOfMemoryError: Java heap space”. Due to this I updated the entire function in order to only process 150 records at one go, which works fine when…