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  • Concurrency programming in Java

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    Volatile The Java volatile keyword is used to mark a Java variable as 'being stored in main memory'. More precisely that means, that every read of a volatile variable will be read from the computer's main memory, and not from the CPU cache, and that every write to a vo …

    Java , Concurrency
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  • JSP (JavaServer Pages)

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    JSTL - Core <c:if> Tag The <c:if> tag evaluates an expression and displays its body content only if the expression evaluates to true. The <c:if> tag has the following attributes − Attribute Description Required …

    Java
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  • Intellij IDEA

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    If we want to import a module, but it is not a library, you can associate the project with the main application as follows in IntelliJ IDEA: Project Structure -> Modules -> Add new Module (+) Project Structure -> Modules -> Dependencies -> Add Modu …

    Intellij IDEA
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  • Linux & Server Administration

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    Finding files $ grep -rnw '/path/to/somewhere/' -e 'pattern' -r or -R is recursive, -n adds line numbers, -w stands for match the whole word, -l (lower-case L) can be added to just give the file name of matching files Ref: How do I find …

    Linux
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  • Copying on Mac OS X

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    To copy files on Mac OS X on a remote server can be used FileZilla program, because it uses a secure FTPS protocol. Another good alternative to browsing the file system is e.g. Double Commander (similar to Total Commander) and Midnight Commander. https://filezill …

    Mac OS X
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