Questions tagged as 'java'

Tagged questions
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No suitable driver found MariaDB

I'm trying to insert a tuple of data into a DB using JDBC through a web page. I made a ConnectionFactory class to encapsulate the connection with MariaDB, I imported the driver for the classpath, I tried inserting some data with a...
asked by 11.09.2018 / 21:08
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Error Passing an Object to the Other [closed]

Hey guys. I am new to java and this is an error where I want to pass an object from one class to another object of another class and it gives the following error. Incompatible types: Patient can not be converted to String . I know what it me...
asked by 02.11.2018 / 23:06
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Calculate time in Java

I would like to know how to calculate the average time through a table in java? What I want to do is that when the user searches for a client, only the customer's call information will appear in the table along with the call time, after which...
asked by 25.11.2018 / 22:50
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Find patterns inside a String [closed]

I'm having trouble finding two patterns inside a string in java, given a string. For example: String str = 0214783452314021984081894723280904197901644376630211019960917898344018051986167734221102312200100173255450080919680409018769025111981007...
asked by 15.03.2018 / 18:32
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How to read and display data in Android Studio?

How to read data entered by the user in an EditText and display in a new activity in Android Studio? I've tried it in some ways, but displaying it in the other activity only displays "false".     
asked by 28.05.2018 / 20:37
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Send sms with modem 3g

I'm developing a java application that sends sms through a modem using RXTX. So far I have this code: public static void main(String args[]) throws Exception{ BlockingQueue<String> queue = new LinkedBlockingQueue<String>();...
asked by 04.03.2018 / 21:42
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Java Connection MySql and FTP

My question is not about how to make a connection to ftp or mysql, as I'm not getting it. I make the connection using the parameters like host, port, user and password. My source code stores this information. Thinking about the security issue...
asked by 25.07.2016 / 19:07
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Where do I find examples of simple program codes made entirely in Java? [closed]

Where do I find examples of simple program codes made entirely in Java?     I need links!     
asked by 18.08.2016 / 05:09
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My button does not work when I put f: validateRegex

Without the f: validateRegex the button works normally, but after putting f: validateRegex to validate input data, it does not work anymore, can anyone help? Follow the code in the attachment, I can not format it here ...     
asked by 06.04.2016 / 15:23
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Java Import all classes from another package [closed]

I have 2 packages, I would like to import package B into all classes of package A.     
asked by 04.07.2017 / 18:57