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I have a Swing JFrame with some labels and buttons. I need to perform some actions when device is plugged. I do not know and didn't find whether I can use ActionListener or something like this.
What you will need is information on the device driver and how to be able to write code to catch events from the device. Note that they may have a library for this, but it might be in another language such as C or C++, and this could possibly force you to write code in this language or use JNI or JNA to interface their library with Java or both.
ActionListener is applied only to actions in buttos, menus, popup, etc.
I guess that you need create something using JNI to listen for specific events in SO.
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I have an exiting Android app that uses Java and XML. I want to reface it, and i need informations.
This app use Android specification like the mobile position, modification of te current antenna (2G, 3G, 4G, 5G) ... and a local database with SQLite.
So I need to know if i can make my graphical interface with react and have interactions whith my java code to access to this Android properties. Is it possible to call java functions with react native ?
Can i use React or did i just have to use XML like i did before ?
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I am asking this as I am attempting to create a game library and I am kind of new to Socket programming and I was wondering if it is best that I use netty or plain old Socket.io for this. And when attempting this I just need an idea of how I should go about mixing TCP/UDP together within my framework for this section of what I am working on.
It seems you already picked netty, at least as tag. With that framework you do not do socket programming yourself. Go through the documentation and learn to focus on event handlers: What should happen when a message is received via the network?
Consider such messages simply to be events, just like a mouse click or keyboard input.
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What code shall I use to add shadow effects to a panel in Java swing, I know the same is available in javafx but can we do the same in swing?
Swing does not provide built-in capabilities for these.
You can drop shadow either by adding border or draw manually. Here are some examples for dropping shadow from JPanel
Animation is more complex, one approach is to use timer and change properties or draw on appropriate ticks, another is to incorporate some library like Timing Framework.
As a side note, you are asking two different questions in one and probably you need to do some research by yourself before posting and provide the results in the question.
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I made a notepad application using java swing and currently it has the following features in it, you can create a new file and save it to the desired location also you can open an existing file, edit it and save it on a new location or update the existing one.Now i want to add the feature that would support the multiple file editing/creating at the same time, just like in notepad++. I have not much idea about how could this be done, please tell me the way to do it.would multi threading help?
Take a look at the jTabbedPane documentation:
http://docs.oracle.com/javase/tutorial/uiswing/components/tabbedpane.html
With the tabbed pane you can use several components and manage them all without threading (only one tab is active at a time) it will just require some additional logic to determine which tab/text area you are currently viewing when the toolbar features are used.
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I am new in embedded world. May be I am wrong. But I want a relevant solution.
I just want to embed java environment into a MCU for ease to develop application. The MCU vendor have provide the C library for lcd, sensor, spi, buttons, UART, DIO etc etc. Can I embed java into this ?? I mean, I want to use java on the MCU, uppon those device drivers.
Can I use or make something like this??
I have seen the simple Real-Time-Java it's very tiny.
Thank you.
Take a look at NanoVM and Bajos.