Recent questions tagged java

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I have the following problem. I have three classes, A, B and C. A contains a OneToMany relationed list of B:s ... a field called "c.name". 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 super.getClass() in a subclass returns subclass name

I am inside a subclass and when I am trying to find the name of super class, I tried super.getClass() , but ... name of the subclass only. Why? 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 - Read a zip file inside zip file

I have zip file which is inside a folder in zip file please suggest me how to read it using zip input stream. ... a zip file inside zip file? 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 `instanceof` error rather than return `false` when used for 2 incompatible classes?

I'm reading this: http://java.sun.com/docs/books/jls/third_edition/html/expressions.html#15.20.2 They say: ... returning false? Thanks, JDelage 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 append text to TextArea throws Exception

Answer : JavaFX append text to TextArea throws Exception I have a thread that calculates the size of a directory ... Thread.run(Thread.java:745) 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 add new element to Varargs?

I have a method public boolean findANDsetText (String Description, String ... extra ) { inside I want to call ... couldn't make it work. 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 - SEVERE: Unable to create initial connections of pool - tomcat 7 with context.xml file

I tried to run project on tomcat 7.0.52 and initialize to DB through context.xml file. But it throws bunch ... . How to solve this trouble? 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 - inputstream.available() is 0 always

I have no idea of what is happening to my code. i am getting no errors and no response as well. I ... button click event inside the 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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java - Access restriction: The constructor Provider() is not accessible due to restriction on required library jdk1.6.0jrelibjsse.jar?

i am using javax.Mail api with authenticator, but this below code giving Access restriction: The constructor Provider( ... how to resolve 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 - How to reach css and image files from the html page loaded by javafx.scene.web.WebEngine#loadContent?

I have a String HTML content which is loaded into webEngine by loadContent() method. I have also some css and ... . How I load these files? 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 - javax.mail.NoSuchProviderException: No provider for smtps

I'm trying to set up my Java project to be able to send e-mail (via g-mail, if it matters) and am ... at java.lang.Thread.run(Thread.java:662) 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 - Creating multiple sheets in CSV file

I am using superCSV to write data in csv format in my code. Its working absolutely fine and very efficiently , ... sending it to client. 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 - Is there a way to make PrintWriter output to UNIX format?

In Java, of course. I'm writing a program and running it under a Windows environment, but I need the ... format. Any easy solution? 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 - xstream CannotResolveClassException

I'm trying to use xstream 1.4.2 to convert xml to object. It does work perfectly fine for me until I put the ... the package it is a member of. 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 - Does "return" stop the execution of a method?

I have programmed a method in the following way: if (something) { return 1; } the rest of the code It ... do not have the finally statement. 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 - Is there something wrong with Swing's MVC implementation for JList?

Some time ago I asked this question. All solutions are workarounds. Now this can't be. I feel that something is ... am I missing a point 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 - Avoiding generic types of form Foo<ActualType extends Foo<ActualType>>

I frequently find myself wanting to write generic class definitions of the form public class Foo<ActualType extends Foo ... classes of type Bar. See Question&Answers more detail:os...

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

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673 views

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java - Maven/Eclipse: Could not find any META-INF/persistence.xml file in the classpath

I know there are other questions on SO about this issue, but none of the solutions have worked for me. I'm ... still doesn't work. Any ideas? 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 - BufferedWriter is not writing a new line in a file for a String having " " added to it

I was trying some stuff in Swing (Java), but getting very strange results. I am getting a String from JTextArea. ... answer.setText(""); } } 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 happened to URIUtil.encodePath from commons-httpclient-3.1?

I want to do what's described in question 724043, namely encode the path components of a URI. The class recommended ... is there a simpler 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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213 views

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java - How can I tell HtmlUnit's WebClient to download images and css?

How can I make WebClient download external css stylesheets and image bodies just like a usual web browser does? See Question&Answers more detail:os...

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

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201 views

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java - Porting AWT graphics code to Android

We would like to use some of our existing Java AWT graphics code on the Android platform. As far as I ... target both Android and generic 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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java - How to draw an outline around text in AWT?

How can I draw an outline around any text in AWT, something similar to this picture? 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 - Blurred text in JavaFX TextArea

I am having a weird issue with JavaFX. I designed a simple Scene in SceneBuilder. The text looks ... .org/mateusviccari/testejavafx.git 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 print a Double without commas

When using toString(), Double adds commas (5143 is printed as 5,143). How to disable the commas? 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 - equal() and equalsIgnoreCase() return false for equal strings

I'm working with eclipse IDE (Version: 3.4.2) on a mac and I have met the following issue. When comparing ... . Does someone have any idea why? See Question&Answers more detail:os...

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

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122 views

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java - How to split date and time from a datetime string?

I have a string like 8/29/2011 11:16:12 AM. I want to split that string into separate variables like date = 8/29/ ... If so, how would 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 - Target different version of JRE

I'm testing Java on a Windows Surface Pro. The Surface Pro has Java 7 Update 55, but does not have the JDK ... Java 7 from a Java 8 machine. See Question&Answers more detail:os...

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

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