This question already has answers here:
How to implement a single instance Java application?
(17 answers)
Closed 7 years ago.
I created an application in java and I want it to run only once. If the application is already running, a messagebox should popup telling the user that the application is already running.
Any idea?
You can check the running programs pid names for an instance of the current program.
Or
Run the application as an instance from another class and keep the check in the other class.
Related
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Clearing console in Intellij-idea
(4 answers)
How to clear the console?
(14 answers)
Closed 2 years ago.
I want to know that how can I clear console screen in java.
The IDE I am using is IntelliJ IDEA.
For example: In C language we use to write: clrscr();
That is not possible in IntelliJ as the console is not a real terminal.
There are however different console plugins where this is possible. One of which is the Grep Console.
This question already has answers here:
Where is main() in Android?
(9 answers)
Closed 4 years ago.
A Java program execution starts from main() method. Right? Since Android apps run on Java, Then why we didn't create a main() method in Android studio?
There's one, but you don't need to see it. Android takes care of threading and keeping threads organized for you, see here.
Moreover, the entry point for an activity is the onCreate() method, so all initialization is normally done in there. The first activity run by your app is normally specified in the manifest file under the launcher keyword.
See here to know more about how android runs the launcher activity.
This question already has answers here:
How do I add a Java backend to an existing PHP site without adding a tomcat server for Java Bridge?
(4 answers)
Closed 9 years ago.
I have created a program but i need to get a java program to run a php script with some arguments and then get the php script to send some arguments to the Java program. I know this question has been asked a lot of times but it seems like the only answer i can get is that php can do this but java cant but there must be a way to do it. Right?
You can run PHP from the command line:
http://php.net/manual/en/features.commandline.php
This should enable your Java application to run it, and capture it's return values.
This question already has answers here:
What's the best way to distribute Java applications? [closed]
(15 answers)
Closed 10 years ago.
I want to create a software using Java. I have coded the application with Java Swing and using backend as MySQL server 5.05.
How can I create an application that can be installed on Windows, and run like other software?
Compile it as a JAR and run it in the Windows JRE.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Any way to “reboot” the JVM?
Is there any option to restart currently executing .jar(a complete project),by code from inside that program
You can invoke using Runtime.getRuntime().exec()
java -jar yourJar.jar
and immediately you can invoke
System.exit(0);
So launching new instance and stopping current