Recent questions tagged Java

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java - How to make a Registration Page using Struts 2

I have been trying to make a registration page which will take 3 values ID,NAME,Password. I have some ideas ... () method (Action 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 - XSSFWorkbook when written creates a corrupted .xlsx document in Spring Boot application using JDBC

For a project I need to create an .xlsm excel document automatically filling out a template file. Problem is, that ... /sheet1.xml"/> </Types> 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 - My Angular + Spring Application routing does not work when deployed on TomCat

I am very much new to angular and spring. I might have made some silly mistakes. I have Angular + Spring app ... }) export class AppModule { } 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 (replace) the MyFaces version used by Websphere 8.5

After upgrading to WebSphere 8.5 I've experienced some incompatibilites in my JSF application. It is possible that ... possible to replace 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 - JavaFX: TableView: get selected row cell values

I'm working on a project where the TableView looks like this: The datas are inside are a MySQL ... NullPointerException and TablePos methods. 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 - Get unicode value of character

Is there any way to get the keycode of a char? For example getKeycode('C'); Is there anything like that? 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 - Jtable doesn't refresh/update data

I have a problem with JTable/JScrollPane. My data table is not refreshing/updating. I am using DefultTableModel ... (rect); } } 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 - Save multiple TextViews as image of large resolution

Situation: I have a picture and user could add texts on it, change there color, size, position, rotation, font ... and loosing quality of text? 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 display line graph using JFreeChart in jsp?

HI All: I am using the below to diplay the line graph. when i run the below code, i am getting the window but ... frame1.setSize(300, 300); } } 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 - Searching for one string in another string

Let's say I have String Table that have a few strings (like mother, father, son) and now in this String ... equals(string) won't help 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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397 views

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java - Can't write to external storage on Android

I see a bunch of other people asking this same question, but none of the solutions posted helped me. I'm ... , if it makes any difference. 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 - Cocos2D-x game fresh off the Play Store can't even open

I just finished my first cocos2d-x game. I've tested it on my GNexus 4.1 and other lower devices, including tablets ... .java:107) ... 15 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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java - Issue with JAXB: nameXmlTransform typeName prefix not working

I wish to convert several schemas into Java Code. The schemas are all similar; for example, each one has a ... the objects, which is awkward. 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 does serialization require a serial version UID in implemented class?

Why does serialization require a serial version UID in implemented 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 implement QR code scanner in Fragment in portrait mode in android?

I am developing an application,In this application I have to implement QR code scanner, I can achieve this ... customise the view of scanner. See Question&Answers more detail:os...

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

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582 views

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java - Launch another application INSIDE an application in Android

Is it possible to launch another application while inside an application? Is there any other solution to ... ); startActivity(LaunchIntent); See Question&Answers more detail:os...

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

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325 views

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java - why does a char + another char = a weird number

Here's the code snippet: public static void main (String[]arg) { char ca = 'a' ; char cb = 'b' ; System.out ... 12" , or 3. Whats 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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393 views

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java - How to provide your services via @Context in Neo4j unmanaged extension

I have Neo4j unmanaged extension. I want some services to be created as singletons and be available via @Context ... How this can be achieved? See Question&Answers more detail:os...

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

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383 views

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java - jsp get ip address

whats the best way of preventing someone from voting twice? How do i get the users ip address? What if they ... getting the same IP address :( See Question&Answers more detail:os...

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

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537 views

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java - PMD rule "Use Proper Class Loader" explaination?

There is the following PMD rule: Use Proper Class Loader (Critical) In J2EE getClassLoader() might not work ... means "J2EE" environment 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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441 views

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java - Scroll TextView to text position

I want to scroll my TextView to make visible a specific position in the text. How can I do that? I tried bringPointIntoView ... // no } }); } } See Question&Answers more detail:os...

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

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422 views

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java - How to add text as a header or footer?

I'm creating a pdf with iText 5 and want to add a footer. I did everything like the book "iText in action" in ... a footer"); return p; } } See Question&Answers more detail:os...

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

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461 views

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java - How to configure GlassFish logging to show milliseconds in timestamps?

I have to admit, configuring logging has me a bit baffled :(..., so I hope that someone here can help. ... properties is in control? Thanks, Jim See Question&Answers more detail:os...

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

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363 views

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java - Java2D - How to rotate an image and save the result

I'm making a game where some objects rotate to face what they're shooting at. There's a delay in between ... new image that would get displayed? See Question&Answers more detail:os...

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

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440 views

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java - Do I have to recompile my application when I upgrade a third party jar?

I have a java application that uses some third party API. The third party jar files change fairly frequently ... the third party jar changes? See Question&Answers more detail:os...

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

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374 views

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java - On Doubles and Equality

One of the methods i have returns a double. When testing this method as part of my jUnit, i noticed the following ... > 0.0 evaluates to 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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442 views

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java - JBoss: Binding values into JNDI in JBoss EAP 6 similar to JNDIBindingServiceMgr

How do I bind an arbitrary string to JNDI in JBoss EAP 6? I used to do it through org.jboss.naming. ... of environment variables. Many 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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292 views

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java - Android - Calling a method in one activity from another, without starting new activity

I'm developing an Android app using GreenDroid. The application is just for testing atm, so it all it contains ... in Android? Thanks! Steven See Question&Answers more detail:os...

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

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