Questions tagged as 'java'

Tagged questions
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How do I make a jTable public?

I need to use a value of one jTable (the table is located in another jFrame, inside the same Package) in another jFrame of Java, for this I am using a getSelectedRow (), so far everything is fine, but the code throws me an error, saying that: "j...
asked by 29.11.2017 / 21:14
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When is a connection established with the DB?

I am learning a bit about JDBC and MySQL and I had a question when connecting to the database, and it is knowing at what moment the connection to it is "opened". When is the Connection object instantiated?.    Connection with = DriverMan...
asked by 09.10.2018 / 21:46
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Save log data in HashMap

What I want to do is save each request of an acceslog in a hashmap , but the saving is not being done. Please someone see the fault ??? JAVA: import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.i...
asked by 02.01.2017 / 17:10
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Make WebView display another URL without leaving the previous one loaded

I would like to know if in android there is any way to load in the WebView a different URL to the current one and that when going back, it would not go back to the first one, since I figure it will consume resources, and my website needs...
asked by 27.07.2017 / 05:22
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Array padded [closed]

I am learning the Arrays, and a problem has arisen, is to fill in an array of integers by keyboard and add the total of those numbers. The truth is that I have been looking for information but I can not find exactly how to do that operation, if...
asked by 04.01.2019 / 18:45
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What is the difference between Parsing and Casting?

So far I understand that both are different, but I'm a bit confused about when to use them or how to use them well. Thanks in advance.     
asked by 31.12.2018 / 06:12
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Remove plugin dark in NetBeans

I installed the dark plugin from the tools - plugins - avaliable plugins tab and put one that was called dark and now I can not uninstall it.     
asked by 31.12.2018 / 00:14
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What SDK (Digital Persona) is the one I use for windows or linux?

Good afternoon, In my work they ask us to develop a fingerprint capture module to record the entries and exits of employees. We chose to buy the Digital Persona U.are.U 4500 and we are ready to buy the SDK, the software of the company is made...
asked by 29.12.2018 / 00:20
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Syntax error, insert "while (Expression);" to complete DoStatement [closed]

I'm doing a simple BlackJack game on JAVA Eclipse Neon. I had a problem with this loop, and I really have no idea how to fix it. I already researched, but I still have that problem, I hope someone can help me with that while and do...
asked by 21.01.2017 / 19:06
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Error "illegal start of expression" [closed]

I am creating a class to check that the number entered is correct. I know the use of exceptions, but at the moment I can not use them. I get two errors, one of while and one of illegal start os expression and I do not know why this is coming o...
asked by 07.02.2017 / 17:49