Recent questions tagged JAVA

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java - How to show only date after the date of today in JCalendar

i'm trying to limit user to select only the date after today, or select date after another Date I see on JCalendar ... .. how can i do 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 - What's the best approach to divide model and actions into classes in MVC pattern

Let's say I have a class Employee with a huge amount of fields. And I have a lot of actions related ... best approach? Need your experience) 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 GSON giving error expected BEGIN_ARRAY but was STRING

An example JSON object is shown below: [{"Title":"John Doe","Address":{"AddressLines":["The Place","123 New ... provided seem to work for me. 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 Action execution and response through AJAX

I am trying to send an AJAX post request via jQuery to a Struts2 action class for processing a form ... and ActionMessages via Ajax? 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 sort by a field of class with its own comparator?

I have a sample class, say Country: class Country { public String name; public int population; ... using this DefaultFlagRankingComparator()? See Question&Answers more detail:os...

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

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129 views

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java - Stop MediaPlayer service when app goes in Background

I have a media player service that plays music in the background of my app throughout activities like : public ... But the music wont resume 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't load IA 32-bit .dll on a AMD 64-bit platform

Error loading win32com: java.lang.UnsatisfiedLinkError: C:Program FilesJavajdk1.7.0_51jreinwin32com.dll: Can't load IA 32- ... . thanks a lot ! 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 - Making a search bar in javafx

I have a code written using javafx that creates a tableview and then inserts the data given in another file. ... was just looking for direction. 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 a better practice for Listeners?

Say I have a swing GUI, and I want to listen MouseEvents. Who do you think should be the Listener class, ... wisdom and help. I appreciate 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 - Validation exception in struts2 action

I have some Action class and try to add a form with validation. But every time when I tried to do ... .service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11P...

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

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348 views

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java - how to update a jLabel every time with a while loop with a delay

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { int count = jSlider1.getValue(); int delay = ... the number. any 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 - Deny direct access to JSP files in Struts2 with Naming Convention plugin

I've been struggling with this issue as I'm new to Struts2 development, and just started using this naming ... if nobody provides an answer. See Question&Answers more detail:os...

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

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108 views

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java - Save new XML node to file

I am trying to save nodeList node that contains XML as a new file, here is the Node list that get a new XML ... returns the node as is. 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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321 views

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java - Drawing shapes in JPanel over an image

I need to draw shapes (circle or free line) over an image that is shown in a JLabel of a JPanel. I based my code ... = me.getPoint(); } }); } See Question&Answers more detail:os...

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

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133 views

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java - Access tree object in netbeans outline

I'm using Outline from netbeans to display some structured data. How can I map selected row to an object in tree? See Question&Answers more detail:os...

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

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260 views

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java - Scanner and nextInt discard integer

I am using Scanner for taking user input in java. when i use nextInt() and the user inputs "2 5", then the value ... .println(k); trial(); } } See Question&Answers more detail:os...

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

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242 views

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java - Odd InetAddress.isReachable() issue

My work is developing software for network capable cameras for retail enviroments. One of the peices of software my ... e.printStackTrace(); }} See Question&Answers more detail:os...

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

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151 views

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java - Calling a Stored Procedure in Hibernate

I just started learning hibernate last night and its rather fun. I am some trouble calling a stored procedure as a sql ... java:2212) ... 2 more See Question&Answers more detail:os...

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

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115 views

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java - Mobile Backend Starter subscribeToCloudMessage will not work

When I use the subscribeToCloudMessage() function with CloudBackendMessaging.TOPIC_ID_BROADCAST as the topicId as is done ... .java:402) 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 - .jar file keeps giving me " could not find the main class". Program will exit

I have been having problems with this on both netbeans and eclipse even with a simple file that displays a ... End of variables declaration } See Question&Answers more detail:os...

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

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286 views

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java - How to obtain class instance of generic argument type

In code, if I write a code line like this: GClass<Double> x = new GClass<Double>(); And let say, that the ... , but its type (that is Double). See Question&Answers more detail:os...

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

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118 views

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java - How do I determine the position of the system tray on the screen?

So I want to display a JPopupMenu whenever the user clicks the icon in the system tray. However, the task ... add TrayIcon to the SystemTray? See Question&Answers more detail:os...

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

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104 views

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java - Why am I able to call private method?

I should not be able to invoke a private method of an instantiated object. I wonder why the code below works. ... as given in this example ? See Question&Answers more detail:os...

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

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127 views

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java - Suppressing noise in wav files

I am working on a prototype for speech 2 text conversion using a wav file as an input .I am currently ... available, would be really helpful . See Question&Answers more detail:os...

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

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272 views

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java - How to validate JSON being sent using Struts2 JSON Plugin without throwing exception

Suppose there's a Double variable in an action, and if the value sent in the request body is ... and firing the globalExceptionHandler? See Question&Answers more detail:os...

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

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172 views

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java - Display RTP MJPEG

I'm looking for a solution to display a RTP JPEG stream with JavaFx. I can display jpeg from a file and ... JPEG Decoder by myself. Any idea? See Question&Answers more detail:os...

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

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134 views

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java - JTextArea setText() & UndoManager

I'm using an UndoManager to capture changes in my JTextArea. The method setText() however deletes everything and then ... .setVisible(true); } } 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 - Accessing Access over JDBC (using ODBC?)

I'm looking for a way to open an Access MDB file inside a Java App (using JDBC). A quick Google Search ... (like with an embeded Derby db)? See Question&Answers more detail:os...

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

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