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I have a client that needs to POST a large number of large json files to a server. I've been able to get it working by reading each of the files into memory and posting the entire file with RestTempla...
In Java 8 three memory barrier instructions were added to Unsafe class (source): /** * Ensures lack of reordering of loads before the fence * with loads or stores after the fence. */ void loadFence...
I am getting below error in intellij for a gradle project. I am importing existing gradle project and trying refresh it in gradle window. Error:No such property: GradleVersion for class: JetGradlePlu...
I am using: Hibernate 4.3.5 Spring JPA 1.6.0 Javax Persistence API 2.1 The "refcodemailing" column is defined as an array of int: int[] My entity object: @Entity @Table public class CalendarEven...
Has anyone used DTLS on Android or is there an open source Java implementation that supports DTLS? What are my other options for securing UDP traffic on Android?
I have the war file of my application. I need to deploy this at the root level. The current URL is http://localhost:8080/war_name/application_name.
I'm using Java 6, Tomcat 6, and Metro. I use WebService and WebMethod annotations to expose my web service. I would like to obtain information about the request. I tried the following code, but wsCtxt...
I have a String Object in format yyyyMMdd.Is there a simple way to get a String with previous date in the same format? Thanks
The descriptions of bitCount() and bitLength() are rather cryptic: public int bitCount() Returns the number of bits in the two's complement representation of this BigInteger that differ from...
I'm looking for the simplest, cleanest way of connecting to Heroku Postgres in a Spring Boot app using JPA/Hibernate. I don't see a good, complete example for this combo in either Heroku or Spring Bo...
I am looking for a package that is similar to Net_IPv4 and Net_IPv6 but written for Java. It needs to be able to do the following: Verify an address is valid (e.g. 127.0.0.1 is valid, 127.0.0.257 is...
I'm having a moral dilemma. I have some value objects in my application, which are immutable and extremely simple. I've generated the equals and hashcode with an IDE (intellij in my case) but doing th...
I get this exception when I call EditText.setSelection() java.lang.IndexOutOfBoundsException: setSpan (N ... N) ends beyond length 10500 N can be any number. For example if I call setSelection(1047...
I am really happy that I got my work in Java programming, and I am doing it since last 3 yrs. And I am netbeans user, and worked on eclipse for sometime (4 months).. Now I am tired on IDE's and its is...
MySQL has a handy function: SELECT GET_LOCK("SomeName") This can be used to create simple, but very specific, name-based locks for an application. However, it requires a database connection. I hav...
I want to use <\tbody>, <\tr> and <\td> to create a table in the comment section of a method : <tbody> <tr> <td>personId</td> <td>y</td>...
I'm reading Gilles Dowek's Principles of Programming Languanges: He says that it's also possible to declare a variable without giving it an initial value and also that we must be careful not to use a...
@Entity @Inheritance(strategy = InheritanceType.SINGLE_TABLE) public class Problem { @ManyToOne private Person person; } @Entity @DiscriminatorValue("UP") public class UglyProblem extends Pro...
I think throws Exception only handles the general case. If my method can throw multiple exceptions, how to declare it?
acttype is an enumcs so you can't insert it as a normal string without casting it to an enumcs INSERT INTO dir_act (actcode,actname,acttype,national_code) VALUES (?,?,?::enumcs,?) Where as for updatin...