System

more about System

Fields
Modifier and Type	Field and Description
`static PrintStream`	`err` The "standard" error output stream.
`static InputStream`	`in` The "standard" input stream.
`static PrintStream`	`out` The "standard" output stream.

Methods
Modifier and Type	Method and Description
`static void`	`arraycopy(Object src, int srcPos, Object dest, int destPos, int length)` Copies an array from the specified source array, beginning at the specified position, to the specified position of the destination array.
`static String`	`clearProperty(String key)` Removes the system property indicated by the specified key.
`static Console`	`console()` Returns the unique `Console` object associated with the current Java virtual machine, if any.
`static long`	`currentTimeMillis()` Returns the current time in milliseconds.
`static void`	`exit(int status)` Terminates the currently running Java Virtual Machine.
`static void`	`gc()` Runs the garbage collector.
`static Map<String,String>`	`getenv()` Returns an unmodifiable string map view of the current system environment.
`static String`	`getenv(String name)` Gets the value of the specified environment variable.
`static Properties`	`getProperties()` Determines the current system properties.
`static String`	`getProperty(String key)` Gets the system property indicated by the specified key.
`static String`	`getProperty(String key, String def)` Gets the system property indicated by the specified key.
`static SecurityManager`	`getSecurityManager()` Gets the system security interface.
`static int`	`identityHashCode(Object x)` Returns the same hash code for the given object as would be returned by the default method hashCode(), whether or not the given object's class overrides hashCode().
`static Channel`	`inheritedChannel()` Returns the channel inherited from the entity that created this Java virtual machine.
`static String`	`lineSeparator()` Returns the system-dependent line separator string.
`static void`	`load(String filename)` Loads a code file with the specified filename from the local file system as a dynamic library.
`static void`	`loadLibrary(String libname)` Loads the system library specified by the `libname` argument.
`static String`	`mapLibraryName(String libname)` Maps a library name into a platform-specific string representing a native library.
`static long`	`nanoTime()` Returns the current value of the running Java Virtual Machine's high-resolution time source, in nanoseconds.
`static void`	`runFinalization()` Runs the finalization methods of any objects pending finalization.
`static void`	`runFinalizersOnExit(boolean value)` Deprecated. This method is inherently unsafe. It may result in finalizers being called on live objects while other threads are concurrently manipulating those objects, resulting in erratic behavior or deadlock.
`static void`	`setErr(PrintStream err)` Reassigns the "standard" error output stream.
`static void`	`setIn(InputStream in)` Reassigns the "standard" input stream.
`static void`	`setOut(PrintStream out)` Reassigns the "standard" output stream.
`static void`	`setProperties(Properties props)` Sets the system properties to the `Properties` argument.
`static String`	`setProperty(String key, String value)` Sets the system property indicated by the specified key.
`static void`	`setSecurityManager(SecurityManager s)` Sets the System security.

System

System

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