Recent questions tagged Java

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java - Is SMTP server required to send mail through web server, by using JavaMail API?

Is a SMTP server required to be able to send mail through a web server, by using JavaMail API? When I am ... provider How can I solve 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 - MediaRecorder stop failed Android

I use this code to prepare my MediaRecorder for recording video. After this I call the start() method, which ... } mInitSuccesful = 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 - Spring Data Rest 2.0.0.RELEASE Breaks Code Working Previously With RC1

I have a project which is utllizing Spring Data Rest. I originally had version 2.0.0.BUILD-SNAPSHOT in my pom. ... seem to have had an effect. 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 - Iterate / recurse through Containers and Components to find objects of a given class?

I've written a MnemonicsBuilder class for JLabels and AbstractButtons. I would like to write a convenience ... other AbstractButtons, etc. 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 - ParameterizedRowMapper That Maps Object List to Object

I am trying to set the Parent List in a ParameterizedRowMapper how is this written or approached. I have two Objects ... .. //setters/getters } 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 memory error in android bitmap

I am using a bitmap. It throws out of memory error (2 out of 5 times). How can it be avoided. ... byteArray); startActivity(i); byteArray=null; 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 multipart content type HTTP Request using RestTemplate

I am trying to emulate this request using RestTemplate in Spring Boot curl -X POST 'https://my.craftar.net ... .newCall(request).execute(); 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 plot a curve using JFreeChart?

I have managed to plot a linear graph. The following is the code: private JPanel createGraph() { JPanel panel = ... can I make it smooth please? 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 - Conversion Char to double

How may I convert a numerical value in the form of a char to a double value? I've tried just casting the ... : 56.0 52.0 1.0769230769230769 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 create a temporary jms queue and connect to it by name?

I need to create a temporary queue for responses, but I need to know if it is possible to connect to temporary ... 't get that object at all. 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 validate input date against multiple patterns?

In my jsf application I know how to validate user input against one pattern in my ice:selectInputDate using a jsf ... I'm using jsf 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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java - Implementing methods from an interface but with different parameters

I am looking for a good way to have different implementations of the same method which is defined in an interface ... you very much 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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java - JavaFX: Create a dynamic tableview with generic types

So, first of all, my code is based on the accepted answer in this thread. I'm trying to create a ... than it being converted to string. See Question&Answers more detail:os...

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

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390 views

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java - How do I change the background color of calendar dates in MaterialCalendarView

I'm trying to change the background color of dates using a JSON response I get. But I'm having some difficulty. Here is ... ", "autoid":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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java - Print combinations of strings in a 2D jagged array

Say I have an array of strings that look like: {{"blue", "red"}, {"1", "2", "3"}, {"dog", "cat", "fish ... .nextLine(); arrays[i][j] = word; } } See Question&Answers more detail:os...

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

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497 views

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java - 2d Array in Spiral Order

I'm trying to fill an array in spiral order. So far, I can print the array in spiral order, but is there a way ... println(values[k][j]); } } } See Question&Answers more detail:os...

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

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342 views

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java - BeansBinding a JTable in NetBeans

I want map a List of beans to a JTable. The idea is that each column will be a preselected field in the ... in NetBeans is just broken. 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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1.2k views

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java - FindBugs : real threat behind EI_EXPOSE_REP

FindBugs raises a bug called EI_EXPOSE_REP with the following description : EI: May expose internal representation by ... 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 - How to calculate the average value of each column in 2D array?

I am trying to calculate the average value of columns in 2D array, but I cannot figure out the code. The function ... = 0; } return average; } See Question&Answers more detail:os...

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

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480 views

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java - True Full Screen JFrame/Swing Application in Mac OSX

I'm working on application and I'm making the GUI with Swing. I would like my application to be fullscreen. ... setVisible(true); //Make visible See Question&Answers more detail:os...

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

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384 views

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java - Why is this thread affecting the main thread?

I must be missing something: public class Test { public static void main(String[] args) { (new Thread(new ... ? This machine has four cores. See Question&Answers more detail:os...

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

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386 views

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java - Calendar to Date conversion for dates before 15 Oct 1582. Gregorian to Julian calendar switch

Given that Gregorian Calendar start date is 15 Oct 1582, please consider the following tests and please help me ... .getTime(); System.out.println("prolepticDate ["+prolepticD...

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

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376 views

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java - JProgressBar setValue is not working, tried with SwingUtilities as well

I have implemented a JProgressBar in a JTable. I used renderer for the ProgressBar NOT EDITOR. Now I tried to implement ... ; } return 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 - Call getPage from htmlunit WebClient with JavaScript disabled and setTimeout set to 10000 waits forever

I'm having problems with Htmlunit, I disabled JavaScript and set timeout to 10000 before calling getpage, I ... _webclient.getPage(url); } See Question&Answers more detail:os...

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

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297 views

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java - Deploying different languages services to the same Application [Google App Engine]

I have two applications, one in Python and the other one in Java. In Python, my application is under ... differents languages (Python and Java) See Question&Answers more detail:os...

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

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535 views

1 answer

java - SWT Browser widget: html source inside jar?

I want to implement a help system for my tiny SWT desktop application. I've thought about a SWT browser ... a FileInputStream. 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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537 views

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java - "Cannot be resolved to a type" when attempting to use Scanner

when i run following code it shows error that scanner cannot be resolved to type. i checked that jre is installed and ... ].display() ; } } } 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 - Is there a limit to how much of a string Logcat will print?

I'm trying to figure out whether my code is pulling the whole of an RSS feed by printing the result to logcat ... has a limit on large strings. See Question&Answers more detail:os...

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

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