Java
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Java – combined code generation using eclipse
Effective Java and other sources suggest that we should consider using composition over inheritance I often find mysel…… -
Distinguish between single click and double click in Java
I searched the forum and saw this Code: public void mouseClicked(MouseEvent e) { if (e.getClickCount() == …… -
An incompatible type error occurred while using code generated from the kotlin data class
If I decompile the data generated by the data class state Class file (Val B: List < array < int > >), then…… -
Java – memory exception analysis hprof file dump
This is related to this problem java. lang.OutOfMemoryError at android. graphics. BitmapFactory. nativeDecodeAsset(Nat…… -
Java – the problem of deleting cookies in servlets
I try to use this code to delete cookies in the servlet Cookie minIdCookie = null; for (Cookie c : req.getCookies()) …… -
What are the benefits of Java – lambda expressions for multi-core systems?
Java tutorials of lambda expressions say: My question is, according to multi-core systems and parallel / parallel prog…… -
Java – combining jax-rs and jax-ws
Is there a framework, library or technology that combines jax-rs and jax-ws (or equivalent) into a composite service, …… -
Implement Java util. Random. nextInt
This function is Java util. Random. It returns a pseudo-random int evenly distributed between 0 and a given n. unfortu…… -
Maximize Java heap space
I try to use a very large square matrix in Java, n = 1e6 or greater Matrices are not sparse, so I don't see many ways …… -
Best practices for dealing with memory leaks in large Java projects?
In almost all of the larger Java projects I've worked on, I've noticed that the quality of service of the application …… -
The shortest path to open a file in Java using encoding and readline()?
What is the shortest way to open a file and set its encoding using the readLine () method? Is the downlink correct and…… -
Java – eclipse ADT error: unable to run program ADB
On Ubuntu, I just installed the Android SDK ("SDK only") for 64 bit Linux Then I installed the ADT plug - in for eclip…… -
Java – restriction of the original buffer – loading partial data and shared strings
I want to check if the raw buffer is the best serializer I use, and my research has found no other approach message Al…… -
Java – = what’s the difference between = and =?
=What's the difference between and? Solution i += 4; i += 4; means i = i + 4; // increase i by 4. and i =+ 4; amount …… -
Java – BlackBerry thread model
I've read a lot of comments and mentioned that BlackBerry threading model deviates from Java standard and may cause pr…… -
Java 3D game engine?
Recently I entered minecraft, a 3D game made in Java I did several 2D java games without any external libraries or ide…… -
Java – how do I move my jmenubar to the on-screen menu bar on Mac OS X?
When I move jmenubar to the on-screen menu bar on Mac OS X, it will leave some blank areas and the menu will appear in…… -
javax. crypto. Which padding does cipher use for RSA
I need to decrypt messages through RSA to send messages through insecure channels, but I'm afraid of padding Oracle at…… -
Array – Java ArrayList to kotlin array
Is there an easy way to convert a Java ArrayList into a kotlin array? The following codes: fun test(): Array<String…… -
Oracle Text criteria query in JPA
Can I execute JPA criteria query using the contains statement of Oracle Text? If so, how? Solution Doubt API exists in…… -
. Net – why do we need iequalitycomparer, iequalitycomparer interface?
The 'equal' and 'GetHashCode' methods exist in the object class, and our type inherits the object base class If we rew…… -
Automatic printing does not work in Java
I have asked to print PDF files in two different ways - one through the web page, the user will see the print preview,…… -
Java – use enumeration values instead of enumeration class names
I use static enumeration in the interface and want to use it in the extension class I have the following interfaces: p…… -
Java – JPA hibernate – loop in entity relationship – cascade strategy
I have a group of entities connected to each other to form a cycle, that is, the parent entity P has two one to many r…… -
Java – basic histogram in JfreeChart
I need to create a simple histogram using JfreeChart There should be 3 sets of numeric values assigned to these groups…… -
Java – a way to reduce memory loss
background I have a spring batch program that reads the file (the size of the sample file I'm using is 4 GB), processe…… -
The Java – wicket check box automatically submits its changed value to the domain object
What is the cleanest way I can make a check box automatically submit the form it belongs to in wicket? I don't want to…… -
Java casting order
Suppose I have the following settings class A { B foo(); } class C extends B { } // later A a = new A(); C theF…… -
Serializing private variables in Java
I have a problem If my class has private variables without getters and setters, the serialization API will read the va…… -
Java – modify methods using annotations
How to change methods in Java and what are they doing? I mean, I tried to use comments to do the following code @Anno1…… -
What is the built-in function to find the next maximum prime in Java?
Does the Java API provide a function to calculate the next maximum prime given the input x? Solution This will be a ve……