Recent questions tagged JAVA

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java - Write operations are not allowed in read-only mode - Issue while persisting

I have been facing the below error while trying to save the object to database. I tried the solution mentioned ... .Final Database : Orcale 11g 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 HttpURLConnection not send the HTTP request

I would like to open an URL and submit the following parameters to it, but it only seems to work if I add ... (line); } connection.disconnect(); 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 use JUnit 5 @Tag with IntelliJ and Maven

I would like to use the @Tag available in JUnit 5 in order to easily filter my tests. I have found in this ... in a command prompt. No luck. 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 - Load image from jar and outside it in eclipse

I have a structure like this in my java project in eclipse: src/com/myprogram/.../foo.java res/icon.png . ... both methods with the same 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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java - How to parse date with optional characters in format

I have the following two dates: 8 Oct. 2009 13 May 2010 I am using Jackson to convert the date from an ... is only one date pattern allowed. See Question&Answers more detail:os...

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

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101 views

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java - Strange JFrame Behavior

I have the following program which has some very strange and unwanted behavior when it runs. Its supposed to have two ... new. Any tips on 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 - Exception with JFreechart in JInternalFrame

Basically, I want a Java GUI with multiple frames, so I'm using JInternalFrame, but when I add my chart ( ... m using Eclipse, latest version). 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 - JSON parser for Talend

I need some help devising a strategy to parse JSON docs within a Talend job (Java job, not Perl). I am ... should turn next? 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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java - regex for simple math equation

I want to recognize integers or decimals and the four simple operations, broken into tokens I can't get the decimal to work, ... "+" , "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 - Why do I need to explicitly cast char primitives on byte and short?

Concerning primitives: When I cast from smaller to bigger types, the casts are implicit, when I cast from bigger to ... = (short)var07; } } See Question&Answers more detail:os...

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

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156 views

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java - How to display a mask in jtextfield?

I want to display a mask in a text field. How can I do that? Is there any reusable java library to do that? I ... should be either 0 or 1) E.g. 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 if statement ALWAYS returns true, no matter what

This just is't making sense to me at all. This is my code: boolean that = false; if (that == true); { ... of my program. What's going on? See Question&Answers more detail:os...

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

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225 views

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java - Parsing a String into Date with DateFormat not parsing correctly

I've been searching all over and just can't find a explanation or reason why this is happening but the ... this bit in first, Infinitifizz See Question&Answers more detail:os...

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

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401 views

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java - @EmbeddedId with @GeneratedValue in @Embeddable

I have a MySQL DB with the following structure (excerpt): CREATE TABLE MENU( id_menu TINYINT UNSIGNED NOT NULL ... you so 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 - Rotating an Image object

I have a method getImage() that needs to rotate an Image, store it in a new variable, then return that new ... but of course, not rotated. See Question&Answers more detail:os...

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

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131 views

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java - Libgdx's World Units

I've been trying to learn libgdx a little but now i'm kinda confused about world units there that i ... camera.unproject on touch coordinates See Question&Answers more detail:os...

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

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275 views

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java - How to get text extraction from PDF to work?

I need to extract the text from a PDFs in Romanian language. The symbols: ?????????a are ... /_Colectie_RO/2nefon.pdf Any suggestions? See Question&Answers more detail:os...

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

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199 views

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java - parsing a date string from FTPClient.getModificationTime()

I am trying to parse a date string which is a modification date of a file on FTP server. Following is the ... anyone please help me with 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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222 views

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java - How to position text relative to page using iText?

How do I set the position of text so that it is centered vertically relative to its page size? I want to position ... I'm new to itext. 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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246 views

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java - How to handle dates when the input dates are in the transition period from PDT to PST?

I am calling an API which takes two dates as input.The API checks if the difference between the two date is ... when called in PST time zone. See Question&Answers more detail:os...

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

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330 views

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java - Coloring particular rows according to the first column values in JTable?

I'm trying to color particular rows according to the first column values in JTable, but the code below colors the ... Here is how it looks now: See Question&Answers more detail:os...

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

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164 views

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java - Scanner, useDelimiter

I encounter some problem when using useDelimiter from the Scanner class. Scanner sc = new Scanner(System.in). ... t want to use StringTokenzier 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 - Supporting WebGL on Android 5's WebView

I have a web project (depends on WebGL) which works on computers, any browser. Now I am trying this project to ... 'd rather go directly for 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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207 views

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java - Error for HttpResponseCode cannot be resolved to a type while checking URL status code for links

I wrote simple program for checking URL status code. But eclipse giving me error saying HttpResponseCode cannot be ... where I can download. 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 - putting marks on ImageIcon in JLabel

So I'm trying to find a way to modify an image in Java. In other words, if user clicks on the image, a ... there a cleaner way to achieve 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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241 views

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java - divide sentence into words and punctuations

I need to parse class Sentence into word and punctuation (whitespace is considered as a punctuation mark), then ... logic at right way? See Question&Answers more detail:os...

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

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210 views

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java - SpringMVC Custom Collection Editor Not Returning Data To Jsp

I am binding a multi select list in spring the item does not get its data from the DAO the data is added from ... ="victims" class="errors" /> 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 - Safepoint+stats log with None vmop operation in output JDK12

I am running application on the JDK12 with the -Xlog:safepoint+stats=debug:file=safepoint.log vm parameter to ... time for my application. See Question&Answers more detail:os...

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

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