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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
logging - How to use log levels in java - Stack Overflow The java util logging Level documentation does a good job of defining when to use a log level and the target audience of that log level Most of the confusion with java util logging is in the tracing methods
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 - How to install openJdk 8 in windows 64 bit os - Stack Overflow The best way to do this is to use the builds from adoptopenjdk They're very high quality and come in multiple variants for Windows ranging from zip files to MSI installers Dead simple to install JDK 8, 11 or 15 But, after the installation when I tried checking the version using command java -version it's showing like regular JDK This is because JAVA_HOME is pointing to your old JDK You
Java is not recognized as an internal or external command The relevance of the JAVA_HOME variable is a tenacious myth Java 1 0 and 1 1 used this variable but since then (for a quarter century now), this variable is not used by Java at all Only some 3rd party tools use this variable as a convention to find the Java installation
How to import a . cer certificate into a java keystore? During the development of a Java webservice client I ran into a problem Authentication for the webservice is using a client certificate, a username and a password The client certificate I receive
java - What is a NumberFormatException and how can I fix it? - Stack . . . 3 A NumberFormatException is the way Java has to say you "I tried to convert a String to int and I could not do it" In your exception trace you can read Exception in thread "main" java lang NumberFormatException: For input string: "Ace of Clubs" at java lang NumberFormatException forInputString(NumberFormatException java:65)
Getting random numbers in Java - Stack Overflow I would like to get a random value between 1 to 50 in Java How may I do that with the help of Math random();? How do I bound the values that Math random() returns?
Whats causing my java. net. SocketException: Connection reset? This is an old thread, but I ran into java net SocketException: Connection reset yesterday The server-side application had its throttling settings changed to allow only 1 connection at a time!
Java JRE 64-bit download for Windows? - Stack Overflow 49 I'm working on a web site project with a Java component and am currently testing for cross-browser compatibility Most is fine but the Java part won't load on 64-bit browsers Looks like I need a 64-bit JRE to test Where does one download the (off-line) 64-bit Java runtime installer for Windows?