Recent questions tagged java

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java - Difference between System.out and Printstream

Is there any difference in these statements System.out.println(error); AND PrintStream ps = new PrintStream(( ... ; ps.println(error); See Question&Answers more detail:os...

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

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java - Android rotate bitmap around center without resizing

I'm struggling to draw a rotating bitmap around its center and do the rotating without resizing the bitmap. I'm ... up for the challenge? :P See Question&Answers more detail:os...

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

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java - How the method resolution and invocation works internally in Python?

How the methods invocation works in Python? I mean, how the python virtual machine interpret it. It's ... resources explaining these aspects? See Question&Answers more detail:os...

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

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java - NoInitialContextException Error Tomcat

I've been trying to find a solution here but I cant... I have the following code and i get this error. ... me know if you need more information! See Question&Answers more detail:os...

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

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java - Eclipse missing imports (javax.media.* and com.sun.media.*)

I have this old java applet that i need to debug, yet i have some problems with import. The import javax.media. ... some one for a little help! See Question&Answers more detail:os...

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

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java - Hibernate - Constraint Name

Does anybody knows how to set the constraint name for primary key (PK_[name]) ,check (CK_[Name]),Default [DF_ ... ! ??? private Address address; See Question&Answers more detail:os...

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

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java - Wildcard pattern for RoutingAppender of Log4j2

I am trying to use the new RoutingAppender of Log4j2 to route the different logs based on the MDC (ThreadContext in ... work as I want. Thanks! See Question&Answers more detail:os...

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

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java - How to implement FlinkKafkaProducer serializer for Kafka 2.2

I've been working on updating a Flink processor (Flink version 1.9) that reads from Kafka and then ... gets NullPointerException in the step? See Question&Answers more detail:os...

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

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java - Android execute code on variable change

I alter a variable on different button clicks, (i.e. inside the onclick listener for multiple buttons) and I have ... I go about doing this? See Question&Answers more detail:os...

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

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java - EJB 3 injection into spring beans

I've made a mavenized web application with spring, spring security... Now, I want to add ejb module for ... will be great and thank you See Question&Answers more detail:os...

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

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java - Database Import and Export not working in Android Pie

Below is the working method to Import and Export SQLite database. Its Working just fine in all android versions ... example would help a lot. See Question&Answers more detail:os...

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

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java - JSch: UnknownHostKey exception even when the hostkey fingerprint is present in the known_hosts file

There are two questions about this exception already: JSchException: UnknownHostKey and com.jcraft.jsch.JSchException: ... .ssh\known_hosts"); See Question&Answers more detail:os...

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

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java - Sax parsing and encoding

I have a contact that is experiencing trouble with SAX when parsing RSS and Atom files. According to him, it's ... I know Java works in Unicode. See Question&Answers more detail:os...

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

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java - CDI missing @ViewScoped and @FlashScoped

Why is Java EE 6 CDI missing the @ViewScoped and @FlashScoped annotations? (especially the former makes me wonder, ... ? Use Seam 3? Thanks See Question&Answers more detail:os...

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

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java - Google Maps Fragment doesn't load

I want to load a Google Maps object and create some listener: I created this class: import java. ... android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:669) 03-29...

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

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101 views

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java - Socket.connect() to 0.0.0.0: Windows vs. Mac

Imagine the following code: String hostName = "0.0.0.0"; int port = 10002; int timeout = 5000; Socket ... used in unit tests. Regards Jonas See Question&Answers more detail:os...

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

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java - Why is XPath last() function not working as I expect?

I am using Java and Selenium to write a test. I need to get the last element inside another element, so I used last( ... it brings me: <b>as</b> See Question&Answers more detail:os...

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

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java - Gson deserialize JSON array with multiple object types

I have some odd JSON like: [ { "type":"0", "value":"my string" }, { "type":"1", "value":42 ... Is there a decent way to remove that assumption? See Question&Answers more detail:os...

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

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java - How to dynamically compute a list of colors?

In order to represent a List of Objects with different colors in a GWT-Widget, we need to get dynamically a ... compute such a List of colors. See Question&Answers more detail:os...

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

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java - Best way to find date nearest to target in a list of dates?

I have a list of Date objects, and a target Date. I want to find the date in the list that's nearest to the ... What is the best way to do it? See Question&Answers more detail:os...

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

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java - Shares Under IP

How to list all the available shared folders under a specific IP Address? Mock code: IP ip = new IP("10.0. ... System.out.println(f.getName()); See Question&Answers more detail:os...

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

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java - Telling HashSet how to sort the data

I'm trying to create a HashSet (or any collection type - but I think HashSet will suit me best) that ... the names based on my specifications? See Question&Answers more detail:os...

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

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java - Is Hibernate / JPA taking in consideration the transient modifier ( not the annotation )

I want to avoid serialisation ( in JMS / AMF ) but still persist the field with JPA/Hibernate. Is the transient ... a piece of spec. Thank ! See Question&Answers more detail:os...

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

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664 views

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java - Vertex label in JUNG graph visualization

I wrote a little graph visualizer class: public void simpleGraph(SparseMultigraph<Vertex,SEdge> graph, String name) { ... Thanks for your help! See Question&Answers more detail:os...

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

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java - Heroku/Play/BoneCp connection issues

I have an app on heroku that uses play. It was working fine for the longest time, but somewhat recently I ... manager is closed. Any ideas? See Question&Answers more detail:os...

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

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178 views

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java - Drag and drop differences between JDK1.6 and JDK1.7

Does anybody know about differences in the drag-and-drop behavior between JDK1.6 and JDK1.7 ? I encountered a ... list data flavor as fall-back See Question&Answers more detail:os...

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

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java - NDK support with different Product Flavour

I want different string value from ndk library. as i have two flavor demo and live I want value "hello I ... flavor for each Android ABI? See Question&Answers more detail:os...

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

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343 views

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java - Read drop down list content from Excel using apache poi

I need to create a drop down list (Data Validation) on a particular cell in an Excel sheet and read them back ... list on a UI. Any suggestions? See Question&Answers more detail:os...

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

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