Recent questions tagged Java

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java - How to refer to the outer class in another instance of a non-static inner class?

I'm using the Apache Commons EqualsBuilder to build the equals method for a non-static Java inner class. For example: ... (which doesn't work)? 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 - Input type="date" thymeleaf

I need to add date to my entity and let the user set it in web form. This field needs to have today's date ... start) { this.start = start; } 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 drag and drop is not working in Selenium Webdriver?

I am trying to drag an element into another element using Selenium WebDriver but it's not working. I tried all ... any other solution ? 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 would I programmatically click a button in JavaFX from another method?

I have a listener class that is networked into my phone to receive input from an application called TouchOSC. ... trigger something like 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 - Eclipse Mars: ANT Task references missing SWT library

I just upgraded to Eclipse Mars and suddenly my ANT task working fine with Lunar complains: The archive: C:/ ... from using lunar again) ? 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 monitor changes on objects contained in an ObservableList JavaFX

I really have difficulties to understand how the ObservableList object is working in JavaFX. I want to monitor if an ... on a some view. 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 - When exactly is the Event Dispatch Thread started?

When exactly is the EDT started? What line of code is responsible of it? My guess is that "someSwingComponent. ... I'm not sure. 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 - UML Class diagram, how to show a Class extends thread?

I have a class called ServerSide in which another class resides called Cserver. The following code fragment should ... be an association? 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 - Jersey: MessageBodyWriter not found for media type=application/json, type=class org.codehaus.jackson.node.ObjectNode?

I am using Jersey 2.8 Client to post data to RESTful endpoint. The code looks like final Client client = ... What am I missing here? 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 - getClass().getClassLoader().getResourceAsStream() is caching the resource

I have a resource (velocity template) which I'd like to be able to swap during development. However, getClass( ... instead of the class loader? 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 - Spring Boot : Spring always assigns default value to property despite of it being present in .properties file

I am working with Spring boot 1.1.8 which uses Spring 4.0.7. I am autowiring the properties in my classes ... I am doing wrong here? 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 - Kafka streams use cases for add global store

When defining a topology in kafka streams, a global state store can be added. It will need a source ... full store restoration from changelog. 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 - IntelliJ - Failed to start: 0 passed, 1 not started

Just been playing around for the first time with IntelliJ IDEA Community edition, first time I have worked with ... what could 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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532 views

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java - JPA Composite key with ManyToOne getting org.hibernate.PropertyAccessException: could not set a field value by reflection setter of

I have a composite key ContractServiceLocationPK made out of three id's (contractId, locationId, serviceId) of type long ... 's going on here? 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 good practice to initialize fields inside a JPA entity getter?

In POJO Java beans such code can be beneficial, especially with collections: class POJO { private Collection<X> ... we risk? Portability maybe? See Question&Answers more detail:os...

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

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396 views

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java - How to format double value for a given locale and number of decimal places?

How can I use NumberFormat to format a double value for a given Locale (default locale is sufficient) and for ... based on the current locale? See Question&Answers more detail:os...

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

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276 views

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java - Can I use Spring Data JPA Auditing without the orm.xml file (using JavaConfig instead)?

I'm trying to get Spring Data Auditing to work in my Spring 3.2.8 / Spring Data 1.5 / Hibernate ... is this referenced from the EntityManager? See Question&Answers more detail:os...

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

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221 views

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java - MySQLNonTransientConnectionException: No operations allowed after connection closed.Connection

I built an web application and deployed locally working perfect. I deployed it on a remote server ... jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1734) at com.m...

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

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212 views

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java - In JSTL/JSP when do I have to use <c:out value="${myVar}"/> and when can I just say ${myVar}

I've been doing this the whole time in my JSP code: <c:out value="${myVar}"/> Today I just realized for ... places where I might still need 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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452 views

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java - How do I consume a web service protected with HTTP basic authentication using the CXF framework?

I tried to get it to work using the CXF User Guide, but I've had no luck. I'm trying to call the web service using java code. See Question&Answers more detail:os...

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

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377 views

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java - Maven exec plugin- how to include "system" classpath?

I have a project that uses "system" scope to specify a jar file included in my project's WEB-INF/lib dir. ... off everything that's on runtime. See Question&Answers more detail:os...

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

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220 views

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java - Will FileChannel#write always write the whole buffer?

(This is related to (or rather the "opposite" of) Would FileChannel.read read less bytes than specified if there ... should not be necessary... 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 - SEVERE: Error configuring application listener of class org.apache.catalina.deploy.ApplicationListener

Here this is my error when I am trying to run the web.xml of my project in Eclipse. This ... .apache.catalina.core.StandardContext listenerStart See Question&Answers more detail:os...

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

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277 views

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java - Disabling certain aspects during unit test runs

I have integration tests (load context) and unit tests running together. My code does aspectj compile time ... Thus I see NullPointerException See Question&Answers more detail:os...

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

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270 views

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java - Why merging is not cascaded on a one to many relationship

My question here is almost similar to my other question Explicit delete on JPA relationships but I thought of ... List<Child> children; } See Question&Answers more detail:os...

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

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306 views

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java - How to use wildcard in Ant's Available command

I'm using an Ant build script to collate my Eclipse-based application for distribution. One step of the build ... TWh11 using Ant? cheers, Ian See Question&Answers more detail:os...

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

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281 views

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java - Why do two methods with signature (primitive, wrapper) and (primitive, primitive) cause the method call (wrapper, primitive) to be ambiguous?

It's just an exercise but I can't figure out the ambiguity: private static void flipFlop(String str, int i ... would have been the choice. See Question&Answers more detail:os...

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

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232 views

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java - Ignoring files from Android APK

Is it possible to ignore files from being packaged into the Android APK? For instance, I have my .psd files ... would prefer not to if possible See Question&Answers more detail:os...

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

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