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- 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 operating on 3 inputs It's a shortcut for an if-else statement, and is also known as a conditional operator In Perl PHP it works as:
- 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
- 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
- What does the ^ operator do in Java? - Stack Overflow
It is the Bitwise xor operator in java which results 1 for different value of bit (ie 1 ^ 0 = 1) and 0 for same value of bit (ie 0 ^ 0 = 0) when a number is written in binary form
- What are the -Xms and -Xmx parameters when starting JVM?
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 the heap, as well as JVM internal data structures
- 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, before checking the values of the parameters The double ones will first check the left parameter and its value and if true (||) or false ( ) leave the second one untouched Sound compilcated? An
- 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
- debugging - What are Java command line options to set to allow JVM to . . .
I know there's some JAVA_OPTS to set to remotely debug a Java program What are they and what do they mean ?
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