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This direct access to the operating system paths can hinder the portability of programs. To support portable programs Java uses File.separator to distinguish between / and \ separated paths. Seed7 has a different approach for the path representation. In Seed7 all paths use the Unix path convention, independent of the operating system.
For backwards-compatibility with MS-DOS and older Windows software, which recognizes filenames of a maximum of 11 characters in length with 8.3 format (i.e.: an eight-letter filename, a dot and a three-letter extension, such as autoexec.bat), files with LFNs get stored on disk in 8.3 format (longfilename.txt becoming longfi~1.txt), with the ...
A valid file URI must therefore begin with either file:/path (no hostname), file:///path (empty hostname), or file://hostname/path. file://path (i.e. two slashes, without a hostname) is never correct, but is often used. Further slashes in path separate directory names in a hierarchical system of directories and subdirectories. In this usage ...
java is the Java runtime launcher, a type of SDK Tool (A command-line tool, such as javac, javadoc, or apt)-classpath D:\myprogram sets the path to the packages used in the program (on Linux, -cp /home/user/myprogram) and; org.mypackage.HelloWorld is the name of the main class
Social pressure is a major influence on the scope of exceptions and use of exception-handling mechanisms, i.e. "examples of use, typically found in core libraries, and code examples in technical books, magazine articles, and online discussion forums, and in an organization’s code standards". [10]
The Java run time system does not need to know about files and file systems as this is delegated to the class loader. A software library is a collection of related object code. In the Java language, libraries are typically packaged in JAR files. Libraries can contain objects of different types.
The Java Module System was initially being developed under the Java Community Process as JSR 277 and was scheduled to be released with Java 7. JSR 277 later was put on hold and Project Jigsaw [2] was created to modularize the JDK. This JSR was superseded by JSR 376 (Java Platform Module System).
The java.nio.file package and its related package, java.nio.file.attribute, provide comprehensive support for file I/O and for accessing the file system. A zip file system provider is also available in JDK 7. The java.nio.file.LinkOption is an example of emulating extensible enums with interfaces. [6]