包含标签：Java 的文章
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Java – how does hibernate ensure that the L2 cache is updated with the latest data in the database
I've read about using hibernate's L2 cache, which can improve application performance by reducing database hit data / …… -
How to make Java applications interact with websites
I have a program to get data from Excel files and operate it for users However, in order to get the update of Excel fi…… -
Java – difference between non repeatable reads and dirty reads
From this Oracle Java Tutorial: What is the difference between dirty reading and unrepeatable reading? Is this differe…… -
Byte array of unknown length in Java: Part 2
Similar to "byte array of unknown length in Java", I need to be able to write an unknown number of bytes from the data…… -
What java compiler uses JSR instructions and what?
Java bytecode language has JSR instructions None of the code I compiled with the Java 7 compiler uses this instruction…… -
Java – can you use throw instead of break in a switch statement?
Can I throw or exit a switch statement without using the break keyword? Why use throwing instead of rest? switch(numbe…… -
Java – Calendar setting year problem
I tried the following code: Calendar c1 = Calendar.getInstance(); c1.set(Calendar.YEAR,0); c1.set(Calendar.DAY_OF_YEAR…… -
Java – how to set JSF message encoding to UTF-8?
I have some user input validation code <h:form> <h:inputText value="#{user.input}"> <f:vali…… -
Java – sets the background image of the surfaceview
Is there any way to set the background image of surfaceview? Do I have to do it in XML, or can I do everything in Java…… -
Java – ehcache automatically generates keys and @ cacheable spring annotations
Does anyone know how ehcache's default key generation works? If I have the following methods: @Cacheable(cacheName = C…… -
Java – chained method format in eclipse
I want to configure the eclipse Java formatter to format chained method calls: lblName .setX(last.getX() + las…… -
The Java swing component cannot be resolved
I got the following code from the tutorial: import javax.swing.*; import java.util.Date; public class SwingGUI { …… -
Java – web surfing / browser automation
I'm creating a java program to surf the Internet, log in to my website account and publish content For example Run the…… -
Files. Parallel version of walkfiletree (Java or Scala)
Does anyone know java files Any parallel equivalent of walkfiletree or something like that? It can be a Java or Scala …… -
Java – why doesn’t Jackson 2 recognize the first capital letter if the leading camel case word is only one letter long?
I am using spring 4 MVC with Jackson 2 my service For one of the operations, I have a request object with an attribute…… -
java – Collections. synchronizedMap(new LinkedHashMap()); Map thread is not made safe
I am using the following construct to create a thread safe map Collections.synchronizedMap(new LinkedHashMap()); Altho…… -
Java – what is the difference between atomicreference and synchronized?
What is the difference between atomicreference and synchronized? public class Internet { AtomicReference<String…… -
Java – spring Mongo adds standard operator and dynamic
I'm trying to create a dynamic query using user input and actions List<Criteria> criterias = new ArrayList<Cr…… -
Compress the byte array in Java and decompress it in C
I currently have the following arrays in my java program, byte[] data = new byte[800]; I want to compress it before se…… -
. Net – LINQ on LinkedList – iterates linkedlistnode instead of T
I'm having trouble understanding how to perform certain operations in LINQ I have a linked list. The type of object do…… -
Java – binary compatibility of abstract classes and subclasses
In Java, I define an abstract class, which contains concrete and abstract methods, and must be independently created b…… -
Java – size of serialized null values
I have to send a complex object over the network. These references are almost null, but I want to know the size of the…… -
Java convert converts string to int when using BufferedReader
How to convert string to int when using BufferedReader? System.out.println("input a number"); int n=Integer.parseInt(…… -
Java – dispatcher servlet spring and URL patterns
I'm new to the spring framework. Today I met web For the dispatcher servlet configuration in the XML file, I came up w…… -
Java – XPath normalize space() returns a series of normalized strings
I need to use the XPath function normalized space () to normalize the text I want to extract from the X HTML document:…… -
Java – I can deploy my on the nginx server war
I really like the stability and way of nginx And I really like Tomcat's Java and user-friendly Is there any way to dep…… -
Get heap dumps from remote applications in Java using jvisualvm
I run jvisualvm (Windows XP, Sun Java 1.6.0.13, 32-bit client VM) to monitor remote applications (Linux, Sun Java 1.6.…… -
java – . Nextval JDBC insertion problem
I try to sequence Nextval is inserted into the table as a primary key, and SQL in Java is sql = "INSERT INTO USER …… -
Java – how to control the centering of JButton HTML text in NetBeans?
I tried to put one or two lines on JButton; for example +----------+ | READER | | STOP | +----------+ But I can'…… -
No Na in R forces the conversion of characters to numbers
I work in R and have a data frame DD with a digital vector_ 2006. When I first import data, I need to delete $, decima…… -
Java – how to put Google Adsense in GWT
Does anyone know how to put Google Adsense ads in GWT web applications? Solution You can put the JavaScript code in Ad……