包含标签：Java 的文章
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Java – Super call in custom exception
I just want to know what we call super. in the custom exception we created. public class MyException extends Exception…… -
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…… -
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…… -
Java – spring boot security displays HTTP basic auth pop-up window after login failure
I am currently creating a simple application for the school project, spring boot back end and angularjs front end, but…… -
Java – what is the purpose of WS addressing?
I'm just confused about WS addressing Wikipedia says it is a specification of a transport neutral mechanism that allow…… -
Java – automatically create unit tests (semi)?
Is there a framework that supports generating some standard unit tests from annotations? An example I think of is: @Ha…… -
Java – guava libraries: Yes iterators Is cycle () thread safe?
Suppose I have the following classes: public class Foo { private List<Integer> list = Lists.newArrayList(…… -
Java – copy text from a disabled jtextfield
Can users be allowed to copy text from a disabled jtextfield? Currently, if I have a disabled text field, users cannot…… -
How do I return an instance of an object of the same type as the class passed using java 6?
I want to return an instance of an object of the type of the incoming class object The type passed in can be arbitrary…… -
Java – use @ requestbody and forward to another endpoint to throw an exception and close the stream
My java spring rest API controller is as follows: public void signup(@RequestBody RequestBody requestBody) throws IOEx…… -
Java – increment IP address in string format
I'm a novice in Java. I'm trying to find a way to increment the IP address range by user input For example, from 192.1…… -
Java – stop all tasks in executorservice
I have some executor services to schedule local tasks, such as reading files, connecting to databases, etc These proce…… -
Java – sl4j and logback – can the logging level of a package be set programmatically?
I can use the following code to programmatically set the logging level of the application, but I can also do this at t…… -
Java – Grails, how do I get an object without saving it
I'm new Grails and trying to create a form that allows the user to change the email address associated with his / her …… -
Search date range using Lucene in Java?
Can I search for a date range using Lucene in Java? How to build Lucene search query based on date field and date rang…… -
Java – what is the difference between a = a.trim() and a.trim()?
I'm in a bit of a mess I know that string objects are immutable This means that if I call a method from the string cla…… -
How to check whether a thread has started in Java?
See English answers > in Java, how do you determine if a thread is running? 8 I will start this post at some time A…… -
Why is it necessary to return a response object instead of a string object to an HTTP request in Java?
I defined my rest method to return a string data type as a response to an HTTP request That's it: @Path("/users/{name}…… -
How to use callbacks in Java to call functions, just as I did in c#?
I'm new to Java, but I need to write something like c# code (this is a hand-made prototype, just to illustrate what I ……