System

Default error output stream.

Default input stream.

Default output stream.

Copies the number of length elements of the Array src starting at the offset srcPos into the Array dest at the position destPos.

Removes a specific system property.

Returns the current system time in milliseconds since January 1, 1970 00:00:00 UTC. This method shouldn't be used for measuring timeouts or other elapsed time measurements, as changing the system time can affect the results.

Causes the virtual machine to stop running and the program to exit. If runFinalizersOnExit(boolean) has been previously invoked with a true argument, then all all objects will be properly garbage-collected and finalized first.

Indicates to the virtual machine that it would be a good time to run the garbage collector. Note that this is a hint only. There is no guarantee that the garbage collector will actually be run.

Returns the system properties. Note that this is not a copy, so that changes made to the returned Properties object will be reflected in subsequent calls to getProperty and getProperties.

Returns the value of a particular system property. The defaultValue will be returned if no such property has been found.

Returns the value of a particular system property or null if no such property exists.

The properties currently provided by the virtual machine are:

        java.vendor.url
        java.class.path
        user.home
        java.class.version
        os.version
        java.vendor
        user.dir
        user.timezone
        path.separator
        os.name
        os.arch
        line.separator
        file.separator
        user.name
        java.version
        java.home
 

Returns the active security manager.

Returns the value of the environment variable with the given name var.

Returns an unmodifiable map of all available environment variables.

Returns an integer hash code for the parameter. The hash code returned is the same one that would be returned by the method java.lang.Object.hashCode(), whether or not the object's class has overridden hashCode(). The hash code for null is 0.

Returns the inherited channel from the creator of the current virtual machine.

Loads the specified file as a dynamic library.

Loads and links the shared library with the given name libName. The file will be searched in the default directory for shared libraries of the local system.

Returns the platform specific file name format for the shared library named by the argument.

Returns the current timestamp of the most precise timer available on the local system. This timestamp can only be used to measure an elapsed period by comparing it against another timestamp. It cannot be used as a very exact system time expression.

Provides a hint to the virtual machine that it would be useful to attempt to perform any outstanding object finalizations.

Ensures that, when the virtual machine is about to exit, all objects are finalized. Note that all finalization which occurs when the system is exiting is performed after all running threads have been terminated.

Sets the standard error output stream to the given user defined output stream.

Sets the standard input stream to the given user defined input stream.

Sets the standard output stream to the given user defined output stream.

Sets all system properties.

Sets the value of a particular system property.

Sets the active security manager. Note that once the security manager has been set, it can not be changed. Attempts to do that will cause a security exception.