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- What are the -Xms and -Xmx parameters when starting JVM?
The flag Xmx specifies the maximum memory allocation pool for a Java Virtual Machine (JVM), while Xms specifies the initial memory allocation pool This means that your JVM will be started with Xms amount of memory and will be able to use a maximum of Xmx amount of memory For example, starting a JVM like below will start it with 256 MB of memory and will allow the process to use up to 2048 MB
- java - SSL and cert keystore - Stack Overflow
How does my Java program know where my keystore containing the certificate is? Or alternatively: How do I tell my Java program where to look for the keystore? After specifying the keystore in some
- java - What is a classpath and how do I set it? - Stack Overflow
I was just reading this line: The first thing the format() method does is load a Velocity template from the classpath named output vm Please explain what was meant by classpath in this context, a
- java - Setting active profile and config location from command line in . . .
I was running it from eclipse and not command line till now But I tried running from using "gradle bootRun -Dspring config location=C:\Config\ -Dspring profiles active=staging" and got the same result
- java - Extracting . jar file with command line - Stack Overflow
Java has a class specifically for zip files and one even more specifically for Jar Files java util jar JarOutputStream java util jar JarInputStream using those you could, on a command from the console, using a scanner set to system in Scanner console = new Scanner(System in); String input = console nextLine(); then get all the components and write them as a file JarEntry JE = null; while((JE
- How do the post increment (i++) and pre increment (++i) operators work . . .
How do the post increment (i++) and pre increment (++i) operators work in Java? Asked 15 years, 4 months ago Modified 1 year, 1 month ago Viewed 445k times
- Setting the default Java character encoding - Stack Overflow
java -Dfile encoding=UTF-8 … com x Main Charset defaultCharset() will reflect changes to the file encoding property, but most of the code in the core Java libraries that need to determine the default character encoding do not use this mechanism
- What does the arrow operator, - gt;, do in Java? - Stack Overflow
That's part of the syntax of the new lambda expressions, to be introduced in Java 8 There are a couple of online tutorials to get the hang of it, here's a link to one Basically, the -> separates the parameters (left-side) from the implementation (right side) The general syntax for using lambda expressions is (Parameters) -> { Body } where the -> separates parameters and lambda expression
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