Java
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Java – eclipse project hidden SRC folder
For some reason, eclipse has started hiding the "SRC" folder in some but not all of my projects, and I want it The fil…… -
Java – component centric NetBeans, GUI Builder (group layout)
I'm trying to design a JButton (an "OK" button), which looks good and must be horizontally centered in the included JF…… -
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…… -
Java – how to set the context path in Tomcat so that you can enter the site without attaching the deployed folder name?
I read some questions about this in the Tomcat guide here I think I do almost the same thing But to some extent, it ca…… -
Java – the background color of the selected item in the non editable jcombobox
Non editable JCombo@R_382_2419 @The background color selected in is a blue color: Is there any way to make it a differ…… -
Java – how to reduce the “cyclomatic complexity” of the following code
I want to know how to reduce the cyclomatic complexity of the following code, if this is something I should worry abou…… -
In Java, when is the constructor of an enumeration constant called?
To use a creative example in Java, here is the code: enum Commands{ Save("S"); File("F"); private String sho…… -
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.……