Recent questions tagged java

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java - Retain annotations on CGLIB proxies?

Am trying to create an object using an AOP framework which uses CGLIB to create proxy objects. Strangely enough, ... it creates? Cheers! Nirav 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 does the dot operator `.` (before the generic parameter) mean?

I saw this code today: ImmutableMap<Class<? extends ClientCommand>, CommandProcessorInterface> immutableMap = ImmutableMap ... .<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 - Quickest way to get content type

I need to chech for the content type (if it's image, audio or video) of an url which has been inserted by ... (so it could be done quicker)? 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 - SimpleDateFormat with TimeZone

I'm trying to format date from java.util.Date. I need this format: 2016-06-10T13:38:13.687+02:00. ... unfortunately return value without +02:00. 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 is throwing a checked exception type allowed in this case?

I noticed by accident that this throw statement (extracted from some more complex code) compiles: void foo() { try ... to be thrown. (?) 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 Joda DateTimeFormatter cannot parse timezone names ('z')

From DateTimeFormatter javadoc: Zone names: Time zone names ('z') cannot be parsed. Therefore timezone ... (DateTimeFormatter.java:673) 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 I can tell alias of the wanted key-entry to SSLSocket before connecting?

I have two certificate/key pairs in a java keystore. Aliases of those key-entries are "foo" and "bar". My ... }); ss.connect( targetAddress ); 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 - Class not found loading JDBC org.postgresql.Driver

I'm working on a web project and I recently installed postgres 9.1.1 The postgresql server is up and running. I ... null; } } return null; } 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 - Failed to instantiate Pageable bean

I use Spring 4.1.6.RELEASE and Spring Data Jpa 1.8.0.RELEASE. I have a problem with org.springframework. ... me to resolve this issue, 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 - CopyOnWriteArrayList throwing CurrentModificationException

I'm occasionally getting a ConcurrentModificationException when I iterate over a list. A Google search informs me ... be corrected regardless. 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 the bounds check doesn't get eliminated?

I wrote a simple benchmark in order to find out if bounds check can be eliminated when the array gets computed via ... "quick-and-dirty" patch. 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 - 'Hot code replace' not working -- Eclipse doesn't change any code on JBoss

I'm currently experiencing a problem with 'hot code replace' not working on Eclipse Galileo and JBoss 4.2.3. ... the application to the JBoss? 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 - Trying to Use ESAPI But getting Error

I am trying to use ESAPI.jar for providing security to my web application.Basically I have just started ... Validation Messages # Log Messages 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 - Is Hibernate's session thread safe?

I need to know, whether the Hibernate's session is thread safe or not. But obvious a new session is ... environment, it gives bad results. 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 - Using an arbitrarily defined method of an anonymous interface

Consider the following code: public static void main(String[] args) { File file = new File("C:\someFile.txt ... , declare the class properly). 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 - Can not find the declaration of element 'persistence'

Have put the persistence.xml in the classpath of the project in eclipse because before the error was that ... persistence-unit> </persistence> 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 - BitmapFactory.decodeByteArray() is returning NULL

I am using the previewCallback from the camera to try and grab images. Here is the code I am using ... - SkImageDecoder::Factory returned null" 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 calculate difference between two dates in years...etc with Joda-Time

import java.text.SimpleDateFormat; import java.util.Date; import org.joda.time.*; public class Test { public static ... , 1 hours, 1 minutes, 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 - Target is not a JDK root. System library was not found. Eclipse Oxygen 4.7 + Java9 error

I'm trying to test JDK9 (jdk-9-ea+147 version) with Eclipse Oxygen IDE. I've installed jdk along with ... Oxygen? Any feedback is appreciated. 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 - Testing string equality using hashCode()

Is there any reason why a Java string cannot be tested for equality using it's hashCode method? So basically, ... you designed it that 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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java - Sort ArrayList of strings by length

I want to order an ArrayList of strings by length, but not just in numeric order. Say for example, the list contains ... 3) bacon (6) tea (8) 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 - Get the By locator of an already found WebElement

Is there an elegant way to get the By locator of a Selenium WebElement, that I already found/identified? To ... instead of the element itself.* 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 - Eclipse console doesn't show the whole output

In Java I tried to write a String as an output to the console. The length of the String is 20166 characters. ... Thakns in advance for any help. 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 does request.getParameter return?

// index.jsp <form method="post" action="backend.jsp"> <input type="text" name="one" /> <input type=" ... a different use case in this scenario. 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 write to a text file using to log4j?

I'm wondering how to convert the following code to output those lines into a text file, and not to ... FA.layout.ConversionPattern=%m%n 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 - StartActivityForResult from a Service

Id like to enable bluetooth like in this example. However my class isnt a Activity but a Service and therefore ... the service and nothing else. 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 - Converting Hexadecimal String to Decimal Integer

I wrote some code to convert my hexadecimal display string to decimal integer. However, when input is something like 100a ... .getText())); } } 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 - Spark and Not Serializable DateTimeFormatter

I'm trying to use the DateTimeFormatter from java.time.format in Spark but it appears to be not serializable. This ... Java 8's time library. See Question&Answers more detail:os...

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

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