Recent questions tagged Java

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java - using spring batch to execute jobs in parallel

I have a use case as follows: 1)There is a Parentjob which has multiple child jobs. 2)All child jobs should ... jobs of same parent in parallel 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 download a part of a file from URL in android?

I am trying to download a part of file given the download URL using setRequestProperty("Range","bytes=" + ... help me resolve this issue. 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 does the android Xml attribute android:onClick="..." work behind the scenes?

I'm asking this a little because im intrested and mostly because im afraid to use propertiescode that I don't ... about how it works,,, 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 how to use HiddenHttpMethodFilter

As we all know, forms only support GET or POST methods, like this: <form method="[GET|POST]" action="/user/ ... but how can I use the class? 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 - Convert a X509 Public key to RSA public key

I have a public key in the following format -----BEGIN PUBLIC KEY----- xxxxxxxx -----END PUBLIC KEY- ... the public key is loaded correctly. 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 - Struts2 + Json Serialization of items

I have the following classes: public class Student { private Long id ; private String firstName; private String ... returned as proxy class. 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 ignore casing of element names in JaxB

As stated in the title I want to ignore casing of element names in a document. static class XY433 { @XmlAttribute(name ... 2"></element> </doc> 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 - JSON output of a JAX-WS webservice?

Is it possible that a jax-ws soap-webservice can output json format instead of xml? @Component @WebService public class ... . JSON 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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java - Can PieChart from JavaFX be displayed as a doughnut?

I'm using javafx.scene.chart.PieChart in my Java app which is built using Java7. Is there a way of making the ... - turning it into a doughnut? 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 check if ImageView contains Bitmap or not?

I am implementing if a ImageView has bitmap then it should save the image from imageview to internal memory ,otherwise ... default: break; } } 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 - Check if a String contains encoded characters

Hello I am looking for a way to detect if a string has being encoded For example String name = " ... the output contains encoded characters? 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 - abstract class NumberFormat - very confused about getInstance()

I'm new to Java and I have a beginner question: NumberFormat is an abstract class and so I assume I can't ... be abstract at all. 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 - bad version in class file

When I use certain jars in one of the connector projects i write for lombardi in TeamWorks eclipse i get a bad ... be resolved.. Regards, Adhir 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 answer a phone call and hang it up?

I have code which is supposed to answer the phone and hang up right away when someone calls the phone. I get ... from this site: Prasanta's Blog 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 - JavaFX 11 in Netbeans 10 (with Maven) has no Sources/Javadocs

I tried out the JavaFX tutorial for Netbeans with Maven and got it running without a problem. Maven found the ... I add them to Netbeans? 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 image crop

I am aware of BufferedImage.getSubimage However, it cant deal with cropping images that are smaller than the cropping ... go about this? 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 - Which subclass of Throwable should be caught and which shouldn't?

API doc says never catch Throwable subclass Error which signifies abnormal behavior. Does it implies that the segregation ... is more to 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 - Applet trouble - NoClassDefFoundError

I realize there's a million of these posts but none of them have helped me so here goes: I'm trying to ... . Anyone know why this is occurring? 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 - ARCore – Session, Frame, Camera and Pose

I'm studying the ARCore References, Develop, make the course from Coursera, and read, understood and learn from ... CameraAr, Frame and Pose. 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 - Creating a JFrame you can click through

I'm trying to create a jframe that the user can click through. I'm not looking for opacity but transparency. I ... bring the one under on top. 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 - org.joda.time | Day Light Saving time (DST) and local time zone offset

just to verify this: I have this lame and brain dead method to calculate the time zone offset for my current ... ; } Thanks for any hint. 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 - On the thread safety of instance variable initialization

I see this idiom of initializing instance variables quite a bit public class Test{ private Long l = 1l; private ... in terms of thread safety? 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 - DocumentBuilder parsing breaks string when hits '&'

i have this xml: <user> <name>H & M</name> and i parse it using this code: DocumentBuilder documentBuilder = ... string: "H & M" 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 Get Only Matched Result from An Array Field of Document in Mongo Using Spring Data

I am using spring boot 1.5.1 and MongoDB version 3.4.6 . I have a mongo document Hotel which has a ... want reviews I have searched by name. 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 positions from a document term vector in Lucene?

I need to iterate over all documents in a Lucene index, and obtain the positions at which each term occurs in ... ( true ); return ft; 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 - Out-of-tree build with maven. Is it possible?

I start learning packaging for several distros (currently Cygwin and Debian). They have requirement to build system to ... with maven? And how? 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 catch RESTEasy Bean Validation Errors?

I am developing a simple RESTFul service using JBoss-7.1 and RESTEasy. I have a REST Service, called ... message and show to user? 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 - Round half even for double

I need to round to nearest 0.5 if possible. 10.4999 = 10.5 Here is quick code: import java.text.DecimalFormat ... 6.0 Thanks for any 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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