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The following examples show how to set the initial and maximum size of young generation to 256 MB using various units: If you don’t set this option, then the initial size is set as the sum of the sizes allocated for the old generation and the young generation.The initial size of the heap for the young generation can be set using the at startup, the class objects in the application are left untouched during GC and are always be considered live.) quotes can be used to enclose arguments that contain whitespace characters.All content between the open quote and the first matching close quote are preserved by simply removing the pair of quotes.
The option overcomes command-line length limitations by enabling the launcher to expand the contents of argument files after shell expansion, but before argument processing.
GC is performed in this region more often than in other regions.
If the size for the young generation is too small, then a lot of minor garbage collections are performed.
Shutdown hooks enable the orderly shutdown of a Java application by running user cleanup code (such as closing database connections) at shutdown, even if the JVM terminates abruptly. This reduces, by 50%, the amount of space required for Strings containing only single-byte characters.
For Java Strings containing at least one multibyte character: these are represented and stored as 2 bytes per character using UTF-16 encoding.