Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Login
Remember
Register
Ask
Q&A
All Activity
Hot!
Unanswered
Tags
Users
Ask a Question
Ask a Question
Categories
All categories
Topic[话题] (13)
Life[生活] (4)
Technique[技术] (2.1m)
Idea[创意] (3)
Jobs[工作] (2)
Others[杂七杂八] (18)
Code Example[编程示例] (0)
Recent questions tagged Java
0
votes
459
views
1
answer
java - Encrypting and decrypting a file using CipherInputStream and CipherOutputStream
I've been trying to write an encrypted file in AES and decrypt it subsequently by using Cipher Streams provided ... help point out the problem? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
100
views
1
answer
java - What is wrong with this clone()?
I have written this clone method for when the parent of the Employee class is abstract and the clone() method in the ... ex) { return null; } } See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
227
views
1
answer
java - How to show different cards in a CardLayout?
I looked at a code example that used this code: cl.show(cardPanel, "" + (currentCard)); But when I use show ... ); frame.setVisible(true); } } See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
135
views
1
answer
java - Loading from JAR as an InputStream?
Is there a ClassLoader implementation I can use to load classes from an InputStream? I'm trying to load ... InputStream into a new ClassLoader. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
112
views
1
answer
java - Basic code to display a pdf in an existing JPanel?
I have an existing interface that has a JPanel for displaying pdf files. It is important to display the pdf ... code (libraries) if possible? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
290
views
1
answer
java - Inserting national characters into an oracle NCHAR or NVARCHAR column does not work
When inserting strings in an oracle database, some national characters are replaced with question marks, even ... inverted question mark. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
384
views
1
answer
java - Joda time - all mondays between two dates
I am using Joda time api in a Spring 3.0 project for the very first time. Now I have a start and ... vague due to little experience with joda. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
176
views
1
answer
java - Synchronized keyword internal implementation
How does JVM make sure threads acquire a lock after entering synchronized method of an object? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
155
views
1
answer
java synchronized method - how does it work
I think I know this, but would like it confirming. Obviously the synchronized blocks other threads from ... it being synchronized. Thanks See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
185
views
1
answer
java - making jfilechooser show image thumbnails
I wanted to create a JFileChooser with thumbnail view of image files.So I subclassed FileView and in the method which ... if this is image } See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
240
views
1
answer
java - can jsoup handle meta refresh redirect
I have a problem using jsoup what I am trying to do is fetch a document from the url which will ... may use meta refresh redirect methods See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
259
views
1
answer
java - Linking thirdparty libs (libs.a) with NDK
I'm building an Android apk who uses some native libraries of a third party, these libs are in Static Object ... the native.c file compiled. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
255
views
1
answer
java - Choosing optimal number of Threads for parallel processing of data
Let's say I have a task with processing 1 million sentences. For each sentence, I need to do something with it ... at once, to be incorrect? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
193
views
1
answer
java - How does Collections.binarySearch work?
I am trying to understand how Collections.binarySearch work in Java. I don't quite understand the output I get ... clarify the output I receive? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
183
views
1
answer
java - How to define index by several columns in hibernate entity?
Morning. I need to add indexing in hibernate entity. As I know it is possible to do using @Index ... references an unknown table: house See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
141
views
1
answer
java - Using command-line argument for passing files to a program
How can I receive a file as a command-line argument? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
424
views
1
answer
java - Log4j failing to send an email when logging an error
I enabled logging in my application, and I want to send logs error by email (gmail account). I: Set up a java ... any idea about that topic ??? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
214
views
1
answer
java - Generating Custom Color Palette for Julia set
I need an algorithm or a method to generate a color palette to Color the Julia set images. When using the escape time ... Y,color.getRGB()); } } See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
410
views
1
answer
java - Spring Security SAML + HTTPS to another page
I created a project with Spring Security SAML. I need to write a code ... artifactResolutionProfile = new ArtifactResolutionProfileImpl(httpClient());...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
245
views
1
answer
java - How to draw a continuous line with mouse on JavaFX canvas?
The code below results in a JavaFX Canvas that can be drawn on with the mouse pointer but skips some points, ... speeds as we go down. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
352
views
1
answer
java - Recursive JSON view of an entity with one-to-many relationship in REST controller
I'm using SpringBoot and JPA to build a REST interface. Now, I have a strange JSON returned for the list of ... .. What am I doing wrong? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
374
views
1
answer
java - Log4j - Have multiple appenders write to the same file with one that always logs
I have a log4j appender defined like: log4j.logger.com.example = DEBUG, filelog log4j.appender.filelog=org.apache ... two different log files? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
127
views
1
answer
java - How to wrap a List as top level element in JSON generated by Jackson
I am running into a problem where I am trying to include a List as the root node, but I can't seem ... me with a more elegant solution? Thanks See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
203
views
1
answer
java - Google Play Game Services: strange sign in behavior
Recently I've added Google Play Game Services support in my app (added BaseGameActivity and GameHelper), and it sign- ... can be wrong? Thanks! See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
444
views
1
answer
java - JavaFx 8 - Scaling / zooming ScrollPane relative to mouse position
I need to zoom in / out on a scroll pane, relative to the mouse position. I currently achieve the zooming ... the ScrollPane that is easier? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
496
views
1
answer
java - Control the classpath ordering of jars in WEB-INF/lib on Tomcat 5?
I have a legacy web app running in Tomcat 5.0. This web app has two jars in WEB-INF/lib, let's say Foo-2 ... for jars in WEB-INF/lib in Tomcat? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
244
views
1
answer
java - Why @OneToMany does not work with inheritance in Hibernate
@Entity @Inheritance(strategy = InheritanceType.SINGLE_TABLE) public class Problem { @ManyToOne private Person person; } @Entity ... setup...) See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
121
views
1
answer
java - Get memory and CPU usage
I would like to get the total physical memory, the CPU usage, and and the amount of memory being used. I ... free memory for the whole system. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
Page:
« prev
1
...
376
377
378
379
380
381
382
383
384
385
386
...
715
next »
Ask a question:
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question
Just Browsing Browsing
[1] vue里面的activity 激活算生命周期吗?
[2] javascript - Firebase: Does the bucket owner have access to all data?
[3] vue 评论回复中的回复框应该怎么写
[4] js处理对象
[5] oracle中sql如何写才能查询出超过5000个字的clob类型的字段?
[6] reactjs - Use SHOPIFY REST API from react
[7] r - Calculating Survival rate from month to month without losing starting values
[8] command line - Unable to install nvm on Mac
[9] js分解url地址
[10] vue单元测试,exclude屏蔽掉node_modules,还是报错
2.1m
questions
2.1m
answers
60
comments
56.9k
users
Most popular tags
javascript
python
c#
java
How
android
c++
php
ios
html
sql
r
c
node.js
.net
iphone
asp.net
css
reactjs
jquery
ruby
What
Android
objective
mysql
linux
Is
git
Python
windows
Why
regex
angular
swift
amazon
excel
algorithm
macos
Java
visual
how
bash
Can
multithreading
PHP
Using
scala
angularjs
typescript
apache
spring
performance
postgresql
database
flutter
json
rust
arrays
C#
dart
vba
django
wpf
xml
vue.js
In
go
Get
google
jQuery
xcode
jsf
http
Google
mongodb
string
shell
oop
powershell
SQL
C++
security
assembly
docker
Javascript
Android:
Does
haskell
Convert
azure
debugging
delphi
vb.net
Spring
datetime
pandas
oracle
math
Django
联盟问答网站-Union QA website
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
广告位招租
...