Ĭalibre allows users to sort and group e-books by metadata fields. Calibre does not natively support DRM removal, but may allow DRM removal after installing plug-ins with such a function. Conversion and editing are easily applied to appropriately licensed digital books, but commercially purchased e-books may need to have digital rights management (DRM) restrictions removed. Most e-book formats can be edited, for example, by changing the font, font size, margins, and metadata, and by adding an auto-generated table of contents. Features Ĭalibre supports many file formats and reading devices. In 2008, the program, for which a graphical user interface was developed, was renamed "calibre", displayed in all lowercase. With support from the MobileRead forums, Goyal reverse-engineered the proprietary Broad Band eBook ( BBeB) file format. In addition to the string table, there's another native data area called the Runtime Constant Pool. JVM uses this pool to store constants like compile-time numeric literals or method and field references that must be resolved at runtime.On 31 October 2006, when Sony introduced its PRS-500 e-reader, Kovid Goyal started developing libprs500, aiming mainly to enable use of the PRS-500 formats on Linux. the number of buckets) via the -XX:StringTableSize tuning flag. JVM stores interned strings in a special native fixed-sized hashtable called the String Table, also known as the String Pool. This process is called String Interning.Since the JVM can only intern Compile Time String Constants, we can manually call the intern() method on strings we intend to intern. In order to save some heap space, we can store one version of each String and make others refer to the stored version. If a large number of those strings contain the same content, then a significant part of the heap will be wasted. Because of their ubiquity, they usually occupy a large portion of the Heap. Let's start with Strings, one of the most commonly used data types in application and library code.
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