System

Default error output stream

Default input stream

Default output stream

Copies the contents of source starting at offset sourceIndex into destination starting at offset destinationIndex for length elements.

Removes the system property for the specified key.

Please see the Java SE API documentation for further information on this method.

Returns the current time expressed as milliseconds since the time 00:00:00 UTC on January 1, 1970.

Causes the virtual machine to stop running, and the program to exit. If runFinalizersOnExit(true) has been invoked, then all finalizers will be run first.

Indicate to the virtual machine that it would be a good time to collect available memory. Note that, this is a hint only.

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.

Security managers should restrict access to this API if possible.

Returns the value of a particular system property. If no such property is found, returns the defaultValue.

Returns the value of a particular system property. Returns 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 an environment variable.

Returns all environment variables.

Returns an integer hash code for the parameter. The hash code returned is the same one that would be returned by 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 system-wide provider.

Loads the specified file as a dynamic library.

Loads and links the library specified by the argument.

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

Returns the most precise time measurement in nanoseconds that's available.

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

Ensure 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 value of the static slot "err" in the receiver to the passed in argument.

Sets the value of the static slot "in" in the receiver to the passed in argument.

Sets the value of the static slot "out" in the receiver to the passed in argument.

Returns the system properties. Note that the object which is passed in not copied, so that subsequent changes made to the object will be reflected in calls to getProperty and getProperties.

Security managers should restrict access to this API if possible.

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 so will cause a security exception.