Recent questions tagged java

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I'd like to read in a file and replace some text with new text. It would be simple using asm ... iterator, CREATE, WRITE, TRUNCATE_EXISTING); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why does POST not honor charset, but an AJAX request does? tomcat 6

I have a tomcat based application that needs to submit a form capable of handling utf-8 characters. When submitted ... . Can anyone help me? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Remove key from a Json inside a JsonObject

I have JsonObject like below {"status":"ACTIVE","accounts":{"email":"[email protected]","name":"Test"}} ... Json Object created by above function. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Hibernate : dynamic-update dynamic-insert - Performance Effects

Using dynamic-update or dynamic-insert has positive, though generally slight only on performance, as also mentioned by ... impact of the same? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why does change from Spring boot version 2.1.4 to 2.1.5 gives unknown configuration Maven error?

I had installed Eclipse (actually Spring Tool Suite). It came with Maven. I had created Spring boot starter projects. ... version is 2.1.5? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - org.hibernate.Session.clear() considered Harmful?

This is a design question, concrete code not submitted to protect my bottom. When working with Hibernate the ... part you are answering). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to interrupt underlying execution of CompletableFuture

I know that CompletableFuture design does not control its execution with interruptions, but I suppose some of you might have ... !!"); } } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JSON: JsonMappingException while try to deserialize object with null values

I try to deserialize object that contains null-properties and have the JsonMappingException. What I do: ... : java.lang.NullPointerException See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Separating war application name from war file name

Currently if i deploy a war file on tomcat named say myapp.war, I can access its url by http://localhost ... app regardless of the war filename? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to convert an InputStream to a DataHandler?

I'm working on a java web application in which files will be stored in a database. Originally we retrieved ... leads in the right direction. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to Force Thread Dump in Eclipse?

I'm launching a Weblogic application inside Eclipse via the BEA Weblogic Server v9.2 runtime environment. If this were ... to do it in Eclipse? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - All super classes of a class

I have a class that extends to another class and that class extends to another class. class 1 extends class 2 class ... I could do that in java? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to handle JPA unique constraint violations?

When a unique constraint is violated, a javax.persistence.RollbackException is thrown. But there could be multiple ... the rollback exception? } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How can I configure a Hudson job to use a specific JDK?

I have a number of projects running on a Hudson slave. I'd like one of them to run Ant under Java6, ... platform (probably an encoding issue). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Fixing BeanNotOfRequiredTypeException on Spring proxy cast on a non-singleton bean?

I'm having an issue with pulling a Spring bean from an application context. When I try; InnerThread instance = ( ... casting to the same class. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - put a string with html/Javascript into selenium webdriver

I have a html document in memory as a string. It contains a <script> tag with a little script that ... run does much more complicated things. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JPA: DELETE WHERE does not delete children and throws an exception

I am trying to delete a large number of rows from MOTHER thanks to a JPQL query. The Mother class is ... the queries for all the children? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - ImageIO - get image type and exif data

Given some source file (or more generic - input stream), I need to find out is it an image if it is an ... the type of image or Exif data. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What's the correct way to implement AsyncTask? static or non static nested class?

The "Login" from Android examples implemented AsyncTask as a non-static inner class. However, according to ... I implement my AsyncTask? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - RestTemplate client with cookies

I'm writing a simple client in Java to allow reusable use of proprietary virus scanning software accessible ... ResponseEntity to access them. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Problems mapping UUID in JPA/hibernate

According to the documentation, hibernate 3.6 should have support for the java.util.UUID type. But when I map ... anything on google :) Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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399 views

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java - Object Serialization to JSON (using Gson). How to set field names in UpperCamelCase?

I need to serialize a list of simple Java objects to JSON using Google Gson library. The object: public class ... be there is another way? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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293 views

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java - AES-NI intrinsics enabled by default?

Oracle has this to say about Java 8 with regards to AES-NI: Hardware intrinsics were added to use Advanced ... the Java runtime or bytecode. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Optional parameters with named query in Hibernate?

Is there any way to specify optional parameters (such as when search parameters are provided from a form and ... in the documentation yet. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - gradle - copy file after its generation

I try to build jar and after that copy it to another folder. task createJar(type: Jar) { archiveName = " ... Could you help me? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Selecting text from a JLabel?

Is it possible to enable the selection of text from a JLabel? If not, what's the best alternative control to ... to appear like a JLabel? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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253 views

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java - Is regex too slow? Real life examples where simple non-regex alternative is better

I've seen people here made comments like "regex is too slow!", or "why would you do something ... level regex rewrite that performs comparably See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Creating LinearLayout Programmatically/Dynamically with Multiple Views

I have a hierarchy that is like this: LinearLayout(horizontal) ImageView LinearLayout(vertical) TextView TextView ... > </LinearLayout> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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