Recent questions tagged JAVA

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java - sun.security.ssl.SSLSessionImpl not found

When I try to use okhttp or javax.ws.rs.client.Client the following error occur java.lang.NoSuchMethodError: sun. ... jvmTarget = "1.8" } 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 - jdk 9 high dpi disable for specific panel

With JDK 9 my swing app works well on Windows with 4k highdpi and normal 1080p normal dpi. Labels, ... dimensions to draw. Kind regards 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 - Alternatives for DatatypeConverter in Android

I trying implement algorithm AES 128 in Android but it doesn't work, the problem is import javax.xml.bind. ... can't implement a solution. 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 it possible to detect visitor DNS server?

Detecting visitor IP is easy. But how about detecting DNS server ips of a visitor ? I found this PHP function ... to detect visitor DNS server ? 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 RSA PKCS1-OAEP padding supported in bouncycastle?

I'm implementing encryption code in Java/Android to match iOS encryption. In iOS there are encrypting ... full bouncycastle implementation. 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 Spring Boot MVC controller multithreaded?

I'm new to Spring MVC and I didn't find anything about this in doc. Let's say I have a controller ... and is this controller thread-safe? 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 - Collapsing Toolbar and Fragment

I have an app that is laid out like this, the mainactivity hosts 2 tabs with accompanied fragments, the first ... http://pastebin.com/4cPGTx2z 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 - HttpUrlConnection is not closing. Eventually results to SocketException

I am encountering some problems with the HttpUrlConnection in devices running Jellybean (4.1 - 4.3) wherein ... manually close the connections? 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 can I pass an arbitrary object to jasper report as parameter?

I would like to pass as a parameter to my .jrxml an arbitrary object of my domain, e.g a Person. ... passing a java.lang.String? 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 - Is it possible to add to the available parameters of a request (HttpServletRequest)

I want to intercept a request in a filter/servlet and add a few parameters to it. However, the request does ... there an alternative I can try? 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 do I externalize named queries in a Hibernate annotations app?

Is there a way to externalize HQL named queries to an external file. I have too many named queries and ... to externalize to several files? 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 Objects Cache

Looking for a simple open source non-copyleft caching for Android (SDK 7+) class. The purpose is primary ... >Manage Application > Clear Cache 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 - Calling methods from JSF page doubts

I have a couple of questions about the way I call methods in EL. Maybe someone could explain how it actually works. ... like this: Why is that? 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 create a JVM-global Singleton?

I was drawn inspiration from this stackoverflow question How can one create a Java class instance that is ... use that singleton instance. 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 - base64 encode audio file and send as a String then decode the String

I have been stuck on this issue for a few hours now trying to get it working. Basically what I am trying to ... is used. Any ideas? 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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247 views

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java - Accessing a remote MBean server

I am running a client/server application using JBoss. How can I connect to the server JVM's MBeanServer? I ... memory usage from the client. 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 get selected row index in JSF datatable?

I have a databale on index.xhtml <h:dataTable style="border: solid 2px black;" value="#{IndexBean.bookList ... .getRowIndex()); } } 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 - RxJava -- Terminating Infinite Streams

I am exploring reactive programming and RxJava. It is fun, but I am stuck on a problem for which I cannot find an ... my code make you cry? :) 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 scroll to last row in a JTable

I am trying to use JTable in the way where new data record are added to the end. The strange thing is the scroll ... getRowCount()-1, 0, true)); 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 - reading a csv file into a array

I am trying to read the csv file, "read_ex.csv", into an array. I have searched endlessly on the web/stackoverflow ... ("user.dir")); } } 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 - Using AbstractRoutingDataSource to dynamically change the database schema/catalog

According to this article, you can use the AbstractRoutingDataSource from Spring Framework to dynamically change the ... data sources? 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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504 views

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java - Why would you catch InterruptedException to call Thread.currentThread.interrupt()?

In Effective Java (page 275), there is this code segment: ... for (int i = 0; i < concurrency; i++) { ... raise it? Why not just let it fly? 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 rotate an array?

I have the following problem to test: Rotate an array of n elements to the right by k steps. For instance, with ... bubble sort) in O(1) space? 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 - Need help creating JPA criteria query

I'm building my first Java EE web application using Glassfish and JSF. I'm fairly new to the criteria query and ... error, means nothing to me! 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 Generic JPA Repository in Spring Boot - Which can be autowired into spring services for any entity/class type

Here is the sample Generic Repository implementation which extends the spring PagingAndSortingRepository, @NoRepositoryBean public ... do 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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184 views

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java - Native query and caching mechanism of Hibernate

I have a question regarding Hibernate caching mechanism.I have read in the articles that native SQLquery execution ... only first level cache? See Question&Answers more detail:os...

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

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279 views

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java - Why choosing JMS for asynchronous solution ? Why is it better than a simple entity bean?

In most projects I have participated, the choice of an asynchronous solution has been a source of much ... your responses and feedback! 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 - Locale Currency Symbol

I having some problems getting the default currency symbol of the system. I am getting the currency symbol this ... What can be causing 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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