What is the difference between JVM, JDK, JRE & OpenJDK?
Jul 19, 2012 · JVM is the Java Virtual Machine – it actually runs Java ByteCode. JRE is the Java Runtime Environment – it contains a JVM, among other things, and is what you need to run a Java …
What are the -Xms and -Xmx parameters when starting JVM?
Feb 7, 2013 · From Oracle's documentation: Note that the JVM uses more memory than just the heap. For example Java methods, thread stacks and native handles are allocated in memory separate from …
debugging - What are Java command line options to set to allow JVM …
Apr 17, 2019 · I know there's some JAVA_OPTS to set to remotely debug a Java program. What are they and what do they mean ?
java - How to set the maximum memory usage for JVM? - Stack Overflow
Sep 29, 2009 · I want to limit the maximum memory used by the JVM. Note, this is not just the heap, I want to limit the total memory used by this process.
Setting the default Java character encoding - Stack Overflow
From the JVM™ Tool Interface documentation… Since the command-line cannot always be accessed or modified, for example in embedded VMs or simply VMs launched deep within scripts, a …
java - How do I set the proxy to be used by the JVM - Stack Overflow
Sep 23, 2008 · 386 Many times, a Java app needs to connect to the Internet. The most common example happens when it is reading an XML file and needs to download its schema. I am behind a …
java - What is the difference between the JRE and JVM? - Stack Overflow
JVM - java virtual machine is a specification for a run-time environment to execute byte code. JRE - java runtime environment is the implementation of jvm JDK - java developement kit, it's JRE + …
java - SSL and cert keystore - Stack Overflow
Aug 16, 2021 · SSL properties are set at the JVM level via system properties. Meaning you can either set them when you run the program (java -D....) Or you can set them in code by doing …
java - How to set a JVM TimeZone Properly - Stack Overflow
Mar 22, 2010 · I am trying to run a Java program, but it is taking a default GMT timezone instead of an OS defined timezone. My JDK version is 1.5 and the OS is Windows Server Enterprise (2007) …
How is the default max Java heap size determined?
For Java SE 5: According to Garbage Collector Ergonomics [Oracle]: initial heap size: Larger of 1/64th of the machine's physical memory on the machine or some reasonable minimum. Before J2SE 5.0, …