Java
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Java – I was studying robolectric, but something went wrong
I'm learning robolectric My project directory is, My unit test code mainactivitytest is as follows, package com.exampl…… -
Java – why do we have to use an intermediate variable (“unchecked”) for @ suppresswarnings?
Good afternoon, everyone, I wonder why public class test<T> { T[] backing_array; public void a(int init…… -
Java lambda expressions and logging
I'm reading the new features of log4j2, and there is a feature that can be enabled "Java 8 lambda supports lazy loggin…… -
Java – use Hadoop to process a large number of small files
I am using the Hadoop sample program wordcount to handle a large number of small files / Web pages (CCA. 2-3 KB) Since…… -
Java – what is the optimal initial capacity of a StringBuffer for input with a very variable length?
Good afternoon, everyone. I use Java Lang. StringBuilder to store some roles I don't know how many roles I want to sto…… -
The mockbean annotation in the Java – spring boot test results in a nonuniquebeandefinitionexception
I have a problem using @ mockbean annotation The document says that mockbean can replace beans in the context, but I g…… -
“Error: java_home is not defined correctly.” Building jikes RVM
When I built jikes RVM on Ubuntu, I received this error Any ideas? bin/buildit localhost production ---> Config: pr…… -
Which Java RMI / RPC / IPC technology should I use?
I am developing a Java application that contains a server and a client (there may be multiple clients in the future) t…… -
. Net – using dapper ORM to improve the performance of SQLite batch insert
I'm using a desktop application that uses SQLite to batch insert tens of thousands of rows into the SQLite database I …… -
Java – jax-ws client: maintaining sessions / cookies in multiple services
I use NetBeans to automatically create web service clients from WSDL files This is good, except that the web services …… -
Java – the queue is completely wrong. Cooperate with multiple consumers and producers
I want to simulate the following scenario: multiple users and producer threads are modifying some data establish Block…… -
Java – where are the private instance variables of the abstract class created in the heap?
abstract class A { abstract class A { private int a; public A(int x) { a = x; } public int get…… -
How to kill these code blocks in Java?
caller: switch (type){ case "creature": Creature returnActor2 = getNextCreature(); …… -
Java – with mockito Strange generic edge cases inferred by when () and generic types
I'm writing a Java. Net using mockito beans. For the test case of propertydescriptor, I want to laugh at the behavior …… -
JPA cascading persistent error
I have a one - to - many relationship: product category can contain many products This is the code: @Entity public cla…… -
Java – unable to import org.xml junit. Assert. AssertThat;
I can't import org. In my program junit. Assert. AssertThat. I use Ganymede and JUnit 4.8 one Solution Static import I…… -
Java byte array conversion problem
I have a string that contains a series of bits (such as "01100011") and some integers in the while loop For example: w…… -
Java – liquibase hibernate plug-in does not work
As stated herein（ https://github.com/liquibase/liquibase-hibernate/issues/74 ）I encountered a problem making the liq…… -
Java – Preparedstatement cache – what does it mean (how does it work)
I'm using, for example, c3p0 and some defined "maxstatements" for preparestatement caching Now I send a prepared decla…… -
Java Optimization: (hotspot / Dalvik) optimize the return constant of the final method?
Anyone can tell me whether hotspot or Dalvik is smart enough to inline call the final method that returns the constant…… -
Java – a method that uses private members or public accessors
I realize that this may not be answered, but I'm looking for some guidance on whether to directly use public accessors…… -
Java: how to ensure that interface methods don’t take more time than x?
I have an interface method Boolean right (). If it does not answer within one second, it should return false Solution …… -
Java – how do I add interceptors to all API requests except one or two?
I know that an interceptor can be added to all requests through okhttpclient, but I want to know whether headers can b…… -
Java – Dynamic parsing logic operation – and, or, loop condition
I have an incoming record filter stored with logical clauses, as shown below Acct1 = 'Y' AND Acct2 = 'N' AND Acct3 = '…… -
Java – HTML 4 in JSF 2.1
I want to use the command: JSF < H: CommandButton > generate < input... > But I hope instead of generating…… -
Java – represents overloaded methods in UML
I tried to create a UML diagram representing some java code In class, I have an overloaded method As far as I know, th…… -
Java – Android Camera2 is too slow to capture bursts
I'm trying to modify the Android - Camera 2 basic code to capture a series of pictures However, running l 5.0 on my ne…… -
Java – what causes “symbol not found” and how to fix it?
I've been trying to solve this problem. I've run it in different programs, so it must be in the code It may also be si…… -
java – String … whats do String … mean
I want to figure out some java code private static object [] methodName(NodeList nodes,String... Names) What is an ope…… -
Insert a sequential Dictionary (such as Java’s LinkedHashMap) in swift?
A standard swift class is a dictionary, but keep the type insertion order like @ L_ 301_ 1@？ If not, how will it be i…… -
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Java – parses JSON responses into objects
Good evening, import javax.ws.rs.core.MediaType; import com.sun.jersey.api.client.Client; import com.sun.jersey.api.c……