What is the Java ?: operator called and what does it do?
Not only in Java, this syntax is available within PHP, Objective-C too. In the following link it gives the following explanation, which is quiet good to understand it: A ternary operator is some operation …
java - && (AND) and || (OR) in IF statements - Stack Overflow
Java has 5 different boolean compare operators: &, &&, |, ||, ^ & and && are "and" operators, | and || "or" operators, ^ is "xor" The single ones will check every parameter, regardless of the values, …
java - What is a classpath and how do I set it? - Stack Overflow
Mar 7, 2010 · 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 …
What are the -Xms and -Xmx parameters when starting JVM?
Feb 7, 2013 · 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 …
java - Extracting .jar file with command line - Stack Overflow
Dec 10, 2011 · 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 …
Java Versions and Compatibility - Stack Overflow
Apr 10, 2023 · Java 20 was fully ready for production use. (Java 20 no longer receives updates a few months after the successive version 21 ships.) You said: What is the JDK to Java SE …
java - SSL and cert keystore - Stack Overflow
Aug 16, 2021 · 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 …
logging - How to use log levels in java - Stack Overflow
Apr 28, 2011 · 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 …
java - How do I set the proxy to be used by the JVM - Stack Overflow
Sep 23, 2008 · 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 proxy …
Setting JAVA_HOME - Stack Overflow
JAVA_HOME if you installed the JDK (Java Development Kit) or JRE_HOME if you installed the JRE (Java Runtime Environment). In the Variable Value field, enter your JDK or JRE installation path . …