java.lang
Class System

java.lang.Object
  java.lang.System

public final class System
extends Object

System utilities.

Field Summary

static PrintStream	err
static PrintStream	out
static int	VM_TYPECHECKS

Method Summary

static void	arraycopy(Object src, int srcOffset, Object dest, int destOffset, int length) Copies one array to another.
static void	boot() Boot into firmware update mode.
static long	currentTimeMillis() Current time expressed in milliseconds.
static int	diagn(int code, int param) Diagnostic tool (for firmware developers only)
static void	enableRunTimeTypeChecks(boolean on) Enable/Disable strict run time type checking for some operations within the Virtual Machine.
static void	exit(int code) Terminate the application.
static void	gc() Collect garbage
static int	getFirmwareMajorVersion()
static int	getFirmwareMinorVersion()
static int	getFirmwareRevision()
static int	getProgramExecutionsCount() Get the number of times a Java program (including the menu) has executed since the brick was swiched on
static Runtime	getRuntime() Get the singleton instance of Runtime.
static int	getVMOptions() Return the currently operating Virtual Machine options.
static int	identityHashCode(Object obj)
static void	setErr(PrintStream err) Redirect System.err
static void	setOut(PrintStream out) Redirect System.out
static void	setVMOptions(int options) Control the run time operation of the leJOS Virtual Machine.
static void	shutDown() Shutdown the brick

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

VM_TYPECHECKS

public static final int VM_TYPECHECKS

See Also:

Constant Field Values

out

public static PrintStream out

err

public static PrintStream err

Method Detail

arraycopy

public static void arraycopy(Object src,
                             int srcOffset,
                             Object dest,
                             int destOffset,
                             int length)

Copies one array to another.

exit

public static void exit(int code)

Terminate the application.

currentTimeMillis

public static long currentTimeMillis()

Current time expressed in milliseconds. In the RCX, this is the number of milliseconds since the RCX has been on. (In Java, this would be since January 1st, 1970).

getRuntime

public static Runtime getRuntime()

Get the singleton instance of Runtime.

identityHashCode

public static int identityHashCode(Object obj)

gc

public static void gc()

Collect garbage

shutDown

public static void shutDown()

Shutdown the brick

boot

public static void boot()

Boot into firmware update mode.

diagn

public static int diagn(int code,
                        int param)

Diagnostic tool (for firmware developers only)

setOut

public static void setOut(PrintStream out)

Redirect System.out

Parameters:

out - a PrintStream

setErr

public static void setErr(PrintStream err)

Redirect System.err

Parameters:

err - a PrintStream

getProgramExecutionsCount

public static int getProgramExecutionsCount()

Get the number of times a Java program (including the menu) has executed since the brick was swiched on

Returns:

the count

getFirmwareMajorVersion

public static int getFirmwareMajorVersion()

getFirmwareMinorVersion

public static int getFirmwareMinorVersion()

getFirmwareRevision

public static int getFirmwareRevision()

setVMOptions

public static void setVMOptions(int options)

Control the run time operation of the leJOS Virtual Machine.

Parameters:

options - Bit flags.

getVMOptions

public static int getVMOptions()

Return the currently operating Virtual Machine options.

Returns:

the options

enableRunTimeTypeChecks

public static void enableRunTimeTypeChecks(boolean on)

Enable/Disable strict run time type checking for some operations within the Virtual Machine.

Parameters:

on -