Recent questions tagged Java

0 votes

406 views

1 answer

I need to load a bunch of words (about 70,000) from a text file, add it to a hashtable (using soundex ... for the situation such as above? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.3k views

1 answer

java - JavaFX, OS X, Graphics Device initialization failed for : es2, sw

I'm trying to create a JavaFX project in IntelliJ IDEA, but I get errors every time. After completing tutorial ... to make my project work? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

368 views

1 answer

java - Changing the icon of a .JAR file

How can I change the icon of a .JAR file I want to distribute? I have changed the icon that shows when the ... , which is not the best choice. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

404 views

1 answer

java - jvm heap setting pattern

I have observed while setting heap size people prefer the values 64,128,256,1024.. . If I give a value in ... ? Please help me to understand. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

530 views

1 answer

java - Get an image and its position from excel file using Apache POI

Is it possible to extract an image's information from an xls spreadsheet using Apache POI? In one of my ... here get images positions... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

526 views

1 answer

java - Android: stopService in another Activity

How can I stop my Service in another Activity? I start the service in my summaryActivity ... Statusactivity the SocketServiceIntent. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

444 views

1 answer

java - Android studio v2.2.2 error(27,17) failed to resolve junit:junit4.12

I have searched everywhere for this answer and tried multiple ways to fix this but as I'm new to this IDE I ... to do to these errors? Regards See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

592 views

1 answer

java - Implicit cast to string - toString and int + ""

Why when i use this: int a = 1; methodWithParamString(a + ""); a is cast to String, bu i can't use toString( ... works like: a.toString() + "" ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

386 views

1 answer

java - contextDestroyed() vs addShutdownHook()

I'm currently implementing ServletContextListener and using contextDestroyed() to run cleanup tasks on my web ... , and maintainability? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

717 views

1 answer

java - How to set the default namespace using JAXB

I have a ATOM-XML representation of my data that is returned via a Spring MVC web service. I'm using JAXB to ... in chrome but not in Firefox. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

485 views

1 answer

java - NoSuchMethodError: com.google.common.base.Stopwatch.createStarted()Lcom/google/common/base/Stopwatch

My app is throwing NoSuchMethodError: com.google.common.base.Stopwatch.createStarted()Lcom/google/common/base/Stopwatch error. ... ... 74 more See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

774 views

1 answer

java - Automatically Trim Trailing White Space for properties in Props file loaded into Spring

I'm using PropertiesFactoryBean to load properties from a typical Properties file. Is there anyway to get Spring to ... from the prop value? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

507 views

1 answer

java - How could I have the index of an array 'roll over' when incrementing?

So I have an Array with a length of 4. When I increment it by 1 and the number gets bigger than ... textviewlist.length) % textviewlist.length; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

java - Apache Beam: Unable to find registrar for gs

Beam is using both Google's auto/value and auto/service tools. I want to run a pipeline with Dataflow runner ... class is in the jar. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

350 views

1 answer

java - Are upper bounds of indexed ranges always assumed to be exclusive?

So in Java, whenever an indexed range is given, the upper bound is almost always exclusive. From java. ... officially sanctioned over the other? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

592 views

1 answer

java - Transaction not active - Hibernate - JPA

I have this class which is dedicated to persist data in db through persistance layer of hibernate. public ... then those of TLinkEquipement See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

336 views

1 answer

java - JavaFX: How to make my custom component use all available space from parent layout?

I′m trying to make a custom component to javafx, so I make my class extends javafx.scene.control.Control and on ... wrote to much... =O See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

454 views

1 answer

java - Calling super() with no Superclass?

What happens (if anything) when a constructor calls 'super()' without having any superclass besides Object? Like so ... I just delete that line? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

574 views

1 answer

java - SimpleDateFormat "Unparseable date" Exception

I am trying to parse datetime string with SimpleDateFormat.parse() but I keep receiving Unparseable date exceptions. Here ... what my issue is? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

410 views

1 answer

java - Creating a byte[] from a List<Byte>

What is the most efficient way to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

319 views

1 answer

java - why doesn't this synchronized method work as expected?

I have a class called "Account" public class Account { public double balance = 1500; public synchronized ... using synchronized methods... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

359 views

1 answer

java - Hibernate upgrade to 5.2 - Session Factory creation and replacing PersistentClass for getting entity class properties

I am currently upgrading my Hibernate version to the latest version 5.2.10. I replaced my code in ... creation mechanism for this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

477 views

1 answer

java - GSON: How to move fields to parent object

I'm using Google GSON to transform my Java object to JSON. Currently I'm having the following structure: ... duration object to the JsonWriter. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

453 views

1 answer

java - GWT URL Parameters

What is the proper way to use URL parameters? My URL is this: http://localhost:8080/#pg5?testing=abc In my ... 's what getParamerter() was for. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

560 views

1 answer

java - How should I record `HttpServletRequest`s that are sent to `doPost` in an `HttpServlet` for later playback?

I want to dump some requests (of type javax.servlet.http.HttpServletRequest) into a file and then later replay them ... how to solve my problem. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

565 views

1 answer

java - Set Size of JFace Wizard

I am building an Eclipse RCP application and am having trouble on settings the size of a JFace Wizard. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

471 views

1 answer

java - Case-insensitive URLs with JAX-RS

Is there any easy way to provide a case-insensitive URLs in a JAX-RS web service? The goal of this is to ... produce" (can't recall the source) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

543 views

1 answer

java - .nextval JDBC insert problem

I try to insert into table with sequence .nextval as primary key, the sql in Java is sql = "INSERT INTO ... of sequence, is this correct? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Just Browsing Browsing

Most popular tags