Recent questions tagged Java

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java - How to preserve Empty XML Tags after XSLT - prevent collapsing them from to

Say I have a very simple XML with an empty tag 'B': <Root> <A>foo</A> <C>bar</C> </ ... a way to prevent 'B' from collapsing? 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 - Bad magic number for Bundle in Android

I'm passing data from one activity to other activity with this code: @Override public void execute(List<Report> ... .java:631) Whats wrong? 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 - Read parquet data from AWS s3 bucket

I need read parquet data from aws s3. If I use aws sdk for this I can get inputstream like this: S3Object ... for read parquet data from s3? 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 / JUnit, run all unit-tests for multiple profiles

I have a BaseTest class which consists of several tests. Each test shall be executed for EVERY profile I list ... (@ActiveProfiles("h2")) 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 - Assertion failure in NSEvent?

thanks for taking the time to read this. I'm fairly new to JavaFX and have a weird error in my compiler ... would appreciate any tips or help! 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 - left join with spring data jpa and querydsl

I am using spring data jpa and querydsl and trapped on how to write simple nice query to left join two tables. ... an example. Thank you. Frey. 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 - Illegal pattern character 'Y' on Ubuntu

I use this pattern SimpleDateFormat format = new SimpleDateFormat("YYYY-MM-dd HH:mm:ss"); in windows and it works ... set running using JRE1.6. 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 change PreferenceActivity theme?

I'm trying to change the theme for the PreferenceActivity in my app and I just can't get it to work. This ... ); } And the result is: 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 is an anonymous class in a static context valid

I have a misunderstanding about what an anonymous class in Java is. Consider the following simple example: public ... is it correct 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 - Should I convert an entity to a DTO inside a Repository object and return it to the service layer?

I am trying to get an answer to the two quite similar questions here: Should I convert an entity to a ... is contained inside a shared project. 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 - Initialization in polymorphism of variables

Suppose you have the following code class A { int i = 4; A() { print(); } void print () { System. ... i=4, but instead assigns default value? 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 there an advantage to declaring that a method throws an unchecked exception?

If I have a method which throws an unchecked exception, e.g.: void doSomething(int i) { if (i < 0) throw ... to know others' opinion on 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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java - Hide status bar android

How to hide status bar android 4.1.2 ? i want solution to hide the status bar on version 4.1.2 i want to ... code not work on version 4.1.2 See Question&Answers more detail:os...

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

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322 views

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java - Trying to use holo theme in Android not working

I've been trying to set a holo theme in Android, but I haven't been able to get it to recognize it. Any ideas ... . Weird, but now as is well. 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 - swing flow layout break element

I have panel which is using flow layout. How can I make break in flow layout? Like in html. Some special ... have to go to the next line. See Question&Answers more detail:os...

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

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450 views

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java - play framework 2.1 junit test not working from eclipse

im following the zentask tutorial and wrote a junit test, the test wont run from the eclipse IDE its giving the ... clean compile any ideas??? See Question&Answers more detail:os...

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

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320 views

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java - how to config gson to exclude 0 integer values

I've a Java class with lot of integer fields and when I want to serialize them to json string due to some ... gson not to serialize 0 numbers 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 - Use of an abstract class without any abstract methods

An abstract class need not include any abstract methods. Is there any other reason to make a class abstract ... classes can't be instantiated? See Question&Answers more detail:os...

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

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466 views

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java - Example of using CURRENT_DATE in JPA query

Can anyone point me to an example on how to use CURRENT_DATE in a JPA query? CURRENT_DATE is specified in JPA ... m using EclipseLink 2.0 BTW. See Question&Answers more detail:os...

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

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273 views

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java - Getting device's local timezone

2010-06-14 02:21:49+0400 or 2010-06-14 02:21:49-0400 is there a way to convert this string to the date ... with format 2010-06-14 02:21 AM See Question&Answers more detail:os...

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

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626 views

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java - Maven shade plugin does not exclude the manifest signature files

I am using the maven shade plugin to generate a consolidate jar for my project. The jar is generated as expected ... > </build> </project> See Question&Answers more detail:os...

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

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332 views

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java - Meaning of Double.doubleToLongBits(x)

I am writing a class Vec2D, representing a 2 dimensional vector. I store x and y in doubles. When asked to ... simply write x != other.x? 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 Studio: what compiler settings when including Google Maps

I created a new project in Android Studio and added a Google Maps activity. I get these warnings: warning: ... ignore them in Android Studio? See Question&Answers more detail:os...

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

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269 views

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java - Interfaces in collections framework

My question is Interface Set has method add(E e) and it extends interface Collection. Interface Collection also has ... I am stuck with 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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487 views

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java - Is System.nanoTime() consistent across threads?

I want to count the time elapsed between two events in nanoseconds. To do that, I can use System.nanoTime() ... elapsed between the two events. See Question&Answers more detail:os...

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

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442 views

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java - UTF-8 URL Decode / Encode

I instruct my URL to send an Ajax request like that: url += '/' + something + '/' + id; var ... 8"); it will be converted automatically) See Question&Answers more detail:os...

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

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373 views

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java - Declaring a useless local variable

So this is an odd one, I know the code itself is fairly useless, but what I'm wondering why I get the error: ... .println(input); return 'a'; } See Question&Answers more detail:os...

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

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797 views

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java - How to update the label of p:selectCheckboxMenu without the component being closed after ajax call in primefaces?

There is one problem occurring when I am trying to dynamically generate the label from the backing bean. The problem is that ... (i); } } } } See Question&Answers more detail:os...

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

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