Recent Posts
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Java – can you confuse code with unit tests?
I wanted to confuse our Java Web application code in our existing ant build script, but I encountered a problem with u…… -
Java – how to deeply copy 2-dimensional arrays (different row sizes)
This is my first question in such a community, so my format may not be very good. Sorry Since my problem is that I wan…… -
Java – querydsl – case expression with string value
QueryDsl 3.3. four public class Document { private Confirmation confirmation; } public class Confirmation { .…… -
Java – how to execute unit tests using threads?
Executive Summary: when an assertion error is thrown in the thread, the unit test will not crash This makes sense beca…… -
Java – tag interface
Can anyone explain the contract of marking interface in Java? For ex: if clonable is a tag interface without fields / …… -
Java – won’t Android studio let me use switches on strings?
I'm creating an Android Application in Android studio and trying to create a switch case on the string As far as I kno…… -
Java nosuchmethodexception when getting constructor
I tried to use reflection to load instances of classes When I tried this, I got an exception without this method I'll …… -
Randomize text files read in Java
I try to read a text file in Java, which is basically a set of problems There are four choices and one answer The stru…… -
Java – lwjgl 3 get cursor position
How do I get the cursor position? I checked the glfw documentation, and there is a method glfwgetcursorpos (window, &a…… -
Java – Gmail also extracts messages from sent messages
I have the following code to connect to the inbox of the mail server: Store popStore = popSession.getStore("pop3"); po…… -
sun. net. www.http. Httpclient has a memory leak in Tomcat 6
I'm using Tomcat 6.0 18. After Undeploying my application, httpclient seems to hold a reference to webappclassloader, …… -
Java – how to verify whether an exception is thrown
In my unit tests using mockito, I want to verify that NullPointerException is not thrown public void testNPENotThrown{…… -
Java – tag interface
Can anyone explain the contract of marking interface in Java? For ex: if clonable is a tag interface without fields / …… -
Randomize text files read in Java
I try to read a text file in Java, which is basically a set of problems There are four choices and one answer The stru…… -
Java – how to create a generic type safe HashMap by class type?
See English answers > java map with values limited by key's type parameter5 Later, I want to pass the class type an…… -
Java: enumerating values () and valueof (string)
Why does javac add the value () and valueof (string) methods to the enumeration type being defined? Wouldn't it be bet…… -
Why should a Java – 12 factor application be self-contained?
In the 12 factor article on Port Binding Solution To understand the rules for port binding and self-contained applicat…… -
Java – is there anything better than calling arrays Aslist is a better alternative to list initialization?
Is there a better alternative to using arrays Aslist as a list batch initialization program? Worryingly, this one is v…… -
And Java util. stream. Stream processes two lists in parallel
For each element in each list, perform an action Elements can be processed in any order For example, in old Java: List…… -
Key of string in Java RSA
I use RSA encryption in my application To store the generated public key, I convert it to a string and save it in the …… -
What happens when a collection in Java exceeds its capacity?
I have a service that schedules all calls in memory because we don't want to lose data. At the same time, we need this…… -
Open source Java reporting framework
I want to create several reports and select data from several SQL tables, so I don't create different reports. I want …… -
How to call collections on a part of a Java array Shuffle
So I have the following array: String [] randomList = new String [16]; randomList[0]="Dog"; randomList[1]="Dog…… -
Java – illegalargumentexception: the name of the executable file has embedded references and split parameters
I received an error: IllegalArgumentException : Executable name has embedded quote,split the arguments Runtime Runtime…… -
Java – Custom spring annotations for request parameters
I want to write a custom annotation that will modify the spring request or path parameters according to the annotation…… -
Java – use ActiveMQ, camel and spring to implement the request reply mode
I'm trying to implement the following features: Then read the CSV file line by line: >Build the request according t…… -
Java – how to add text to textarea instead of replacing it
OK, so I have a little new Java. I'm curious about how to add text to a textarea instead of replacing it I Know. Sette…… -
Java – passing listeners to custom snippets in Android
I'm creating a view pager in my application and using a class that extends fragment When I create an instance, I can p…… -
Java – the font name “classname” is inserted into mongodb by morphia
I just started using mongodb and morphia. I realized that there was an extra part in the mongodb file. The record cont…… -
JavaFX tableview edit that clicks and automatically inserts rows?
I use tableview in my program to display a few good lines Question 1: when a user wants to modify a value, he will dou…… -
Java – how do I find and verify the encryption strength of the JDK security provider?
I have this applet that prints out all supported providers in my JDK installation, but I wonder if anyone knows how to…… -
Java – reformat code using regular expressions
We have an ArrayList of items in several classes. Every time I want to insert a new item in the list, it will cause me……