Recent questions tagged Java

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java - Print float with two decimals unless number is a mathematical integer

Is there a simple way of printing a floating value as a string with decimals if the value has decimals, other ... is two decimals, or nothing. 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 - Using Lucene Analyzer Without Indexing - Is My Approach Reasonable?

My objective is to leverage some of Lucene's many tokenizers and filters to transform input text, but without the ... .toString().trim(); } 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 + Firebase: synchronous for into an asynchronous function

I'm making a function (Java - Android) which should return me a list of objects filled with data from Firebase. ... . How can I achieve 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 - Excel DB: Operation must use an updateable query

for a jdbc program, im required to make a connection an excel database. the connection is successfully made ... is where the exception occurs 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 - jsp not passing UTF-8 data in proper format

I want JSP pages to support UTF8 data I am able to localization with struts2 and jsp but when I take data from user ... s:form> </body> </html> 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 read Excel(.xlsx) Multipartfile using Apache CSV Parser?. Current approach not working with CSVFormat set to EXCEL

I'm trying to read records for both CSV as well as Excel format using Apache CSVParser. Below is my ... EORecord. Can anybody please 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 - Rendering javax.swing.JButton in a lwjgl window

Is it possible to render a javax.swing.JButton and other swing elements in a lwjgl window (with openGL)? If ... the documentation was poor... 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 Animate a Fab button (zoom in/out) continuously?

I Want to create this type of animation on FloatingActionButton What I have tried public void animFab() { ... efforts will be appreciated. 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 - JPA query.getResultList()?

I use JPA 1.0: Query query; query = em.createNamedQuery("getThresholdParameters"); query.setParameter(1, Integer.parseInt( ... .id.flag=?3 " ) 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 highlight a MapMarkerDot in Openstreetmap?

I used code from http://svn.openstreetmap.org/applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/ ... well appreciated. 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 make jtextfield only accept characters in netbeans

I have done a sample project in netbeans of registration. In the jtextfield1 is the user id and Jtextfiled7 ... characters.how it is 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 - How do i modify a log format with Simple Formatter?

I've tried adding this line into logging.properties, but the output doesn't change java.util.logging.SimpleFormatter. ... test warning"); } } See Question&Answers more detail:os...

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

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540 views

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java - Extra comma in HashSet

I'm trying to split strings by capital letters, for example when the string is "SizeColorSize", the ... .executeUpdate(sqlAttributeConfig); } 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 - OpenCV IP Camera RTSP stream

I'm trying to access a RTSP video stream from an IP camera using OpenCV and Java. I can access the stream ... =ipcamera What am I doing 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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570 views

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java - Run all JUnit tests indepentently in Eclipse, reloading Spring context each time

Goal: Find a way in Eclipse to execute all the tests in a JUnit class which reloads the Spring context before ... each one or modify the 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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669 views

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java - Exception on loading JDBC-ODBC driver

I am getting java.lang.ClassNotFoundException on loading sun.jdbc.odbc.JdbcOdbcDriver using Class.forName(). I ... sun.jdbc.odbc.JdbcOdbcDriver See Question&Answers more detail:os...

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

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606 views

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java - ImageView setScaleType not working

I have an ImageView and I want to to scale CENTER_CROP. If I set the image src and scale type in XML it ... that to the XML. Neither helps. See Question&Answers more detail:os...

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

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631 views

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java - MicrosoftWebDriver.exe should be pre-installed in an elevated command prompt

I have microsoft edge installed on my machine with below versions: Microsoft Edge 44.18362.449.0 Microsoft EdgeHTML 18 ... can i fix 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 - Struts 2 Convention Plugin Define Multiple Parent Packages

I'm working on Struts 2 web application, using the Convention Plugin to configure everything via annotations. I'm ... removed this as a feature. 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 - What are JDBC-mysql Driver settings for sane handling of DATETIME and TIMESTAMP in UTC?

Having been burned by mysql timezone and Daylight Savings "hour from hell" issues in the past, I decided my next ... set (0.00 sec) mysql> See Question&Answers more detail:os...

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

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666 views

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java - JAX-RS - JSON without root node in apache CXF

If we return collection object in the REST response, then the JSON (it will have the root element node as ... any solution. Thanks in advance. See Question&Answers more detail:os...

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

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738 views

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java - Override Properties file in Spring WebApp at Runtime

I am loading properties file in my Spring WebApplication using PropertyPlaceholderConfigurer as below: <bean class=" ... be appreciated. 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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671 views

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java - Playing an audio file on JButton press?

I've looked on Google for a while, searching how to play audio files, and most of the sources I found were ... Short Audio File Playing 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 - How can I check for invalid input and loop until the input is valid?

I am trying to find the smallest number in the list from user input. I need to ask the user how many numbers are ... : " + smallest); } } } 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 - "Variable may not have been initialized"

I've got a method that creates a String and another method that changes Strings void create(){ String s; edit ... ". Can someone explain 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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435 views

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java - Minimal Hibernate 4 XML configuration with Spring 3 for annotation based transaction management and object mapping?

Assuming that I've already got a working Spring project what is the minimal amount of configuration needed to add ... up to date with Hibernate. See Question&Answers more detail:os...

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

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647 views

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java - Try , finally execution flow when return is in try block

When try , finally combination is used, in try if there is a return statement.Why is finally block executed ... control come to finally block? See Question&Answers more detail:os...

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

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546 views

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java - HazelCast Programmatic Configuration of Tcp-IP is no adding members in cluster

Below is the HazelCast Programmatic Configuration given in Documentation but it is unable to add members in ... members to hazelcast cluster See Question&Answers more detail:os...

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

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