Recent Posts
-
Java – how do we draw a line between two panels
I just want to connect the panel by drawing lines I have two panels, both of which contain a JTable I want to connect …… -
How do i disable the intrinsic function usage of the JIT compiler?
I'm doing some performance tests on the JVM and I want to measure the impact of the use of intrinsic functions I want …… -
This is Java What does the execute () method call mean?
I'm reading the Sun Java Tutorial. I see this page here: How to Make an Applet Under the heading "threads in applets",…… -
Java – will The war file deployed to Tomcat 8 works normally in the IDE, but when I deploy to my VPS, I lose all JS and CSS
I have a spring boot application When I started running Tomcat 8.0 in my IntelliJ IDE_ I have no problem. It looks gre…… -
JPA – the difference between the methods of ‘detach’ and ‘Remove’ entitymanager
I want to know what is the real difference between em.detach (entity), em.remove (entity) and using jpql requests: em.…… -
Java – you cannot use getdeclaraedfields() to retrieve fields from Scala classes
I'm trying to use Scala's Java library (johm) and notice that when lib tries to use something like model getClass(). G…… -
Java – handling catastrophic exceptions
I read in the c# primer that if you don't know how to handle it, you shouldn't find exceptions Considering these sugge…… -
@ parameters in JUnit 4
Can I use multiple @ parameters methods in JUnit test classes running with the parameterized class? @RunWith(value = P…… -
Java – what is the reason for using openjdk?
I understand the difference between Oracle JDK and open JDK in some way But I can't find a reason to use open JDK, bec…… -
Java – how to determine the datasource being used by a hibernate session?
I have several unit tests that should use HSQLDB, but I know some of them are actually using physical databases I want…… -
How to correctly use Java 8 option to conditionally return values or throw exceptions?
I want to implement code like the following to verify the input in my @ restcontroller so that I can avoid explicit nu…… -
Java – lists all sequences in HSQLDB 1.8
How to list all sequences in a specific schema in HSQLDB 1.8? Note: HSQLDB 1.8 does not support the information introd…… -
Unable to find iframe in selenium webdriver (Java)
I want to select an iframe element in the pop - up window I can enter the pop-up window, but I can't find iframe The f…… -
Java – SQLite selecting from like statements does not work?
When I look at the database and run this query, I get the expected results SELECT * FROM users WHERE options LIKE '%[-…… -
java. Lang.illegalargumentexception: unknown parameter name: customer
I was trying to create a list using the getnamedquery method, but I got this exception This is my code public List<…… -
Java – A4J: commandlink stops working after rerender
I created this test case to isolate my problems Once the Ajax update is polled, the A4J: commandlink operation will no…… -
Java – how do I read / write raw hexadecimal bytes from I / O streams in Bluetooth chat?
I am developing an application based on Bluetooth chat sample code I need to be able to write a byte array containing …… -
JPA – how do I change the eclipse link in glashfish 4.0?
I want to change eclipse link from 2.5.0 in glashfish 4.0 0 to 2.5 1. I have downloaded bundled downloaded and replace…… -
Unit testing – how to use JUnit and Hibernate effectively?
I want to use JUnit to test hibernate code, such as insert, update, delete Methods and transaction management But I do…… -
Two java files, in the same directory, one accesses other classes / S?
I tried to grant one Java file to access another Classes in java files I want to do this on the command line For examp…… -
Java – unexpected action of light source in the room
I've written several Android apps, but this is my first time using 3D programming I created a room (4 walls, ceiling a…… -
Java RMI: requires sniffer
How do I sniff and analyze Java RMI traffic? There are only very local solutions in Wireshark I need to know exactly w…… -
Override Java methods that require double arrays
Suppose I define the following Java interfaces: public interface A { public Double[] x(); } Then try to implement it…… -
java – System. Console () returns null from eclipse, but the command prompt is good
When I use eclipse Helios system Console, it always returns null However, when I use it directly from the command line…… -
How to use JUnit to test the spring controller method
Hi, I'm new to spring and JUnit There is a method in my controller I want to write JUnit (getpersons ()) for this meth…… -
Java – shared disk with comps
I have a cluster with shared disks between different nodes How do I configure comp superscalar to consider this shared…… -
Using AES to effectively encrypt files in Java
I am developing an application that should encrypt some small (less than 1MB) and large (about 500MB) files Solution S…… -
Java – JPA @ entity inheritance
I have been studying JPA / Hibernate @ entity inheritance for some time, and it seems that I can't find anything to so…… -
Java – add additional path to exec Maven plugin
I want to add an extra classpath for exec Maven plugin <plugin> <groupId>org.codehaus.mojo</groupId&g…… -
Java Network: Improvised socket / InputStream
I'm implementing an event - oriented layer on a java socket. I wonder if there is a way to determine whether there is …… -
Assembly – atomic Int64 on ARM cortex M3_ t
Since my compiler still doesn't support C 11 and STD:: Atomic, I have to implement it manually through ldrex STREX pai…… -
If there is no body, won’t the while loops in Java check their conditions?
In this example, I have a simple JFrame that contains a JButton. JFrame bound with actionlistener The acitonlistener s……