java.lang

Class System

java.lang.Object

java.lang.System

public final class System
extends Object

General-purpose low-level utility methods. GWT only supports a limited subset of these methods due to browser limitations. Only the documented methods are available.

Field Summary

Fields

Modifier and Type	Field and Description
static PrintStream	err Does nothing in web mode.
static PrintStream	out Does nothing in web mode.

Constructor Summary

Constructors

Constructor and Description
System()

Method Summary

Modifier and Type	Method and Description
static void	arraycopy(Object src, int srcOfs, Object dest, int destOfs, int len)
static long	currentTimeMillis()
static void	gc() Has no effect; just here for source compatibility.
static String	getProperty(String key, String def) Always returns default, used for source compatibility
static int	identityHashCode(Object o)
static void	setErr(PrintStream err)
static void	setOut(PrintStream out)

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Field Detail

err

public static final PrintStream err

Does nothing in web mode. To get output in web mode, subclass PrintStream and call setErr(PrintStream).

out

public static final PrintStream out

Does nothing in web mode. To get output in web mode, subclass PrintStream and call setOut(PrintStream).

Constructor Detail

System

public System()

Method Detail

arraycopy

public static void arraycopy(Object src,
                             int srcOfs,
                             Object dest,
                             int destOfs,
                             int len)

currentTimeMillis

public static long currentTimeMillis()

gc

public static void gc()

Has no effect; just here for source compatibility.

getProperty

public static String getProperty(String key,
                                 String def)

Always returns default, used for source compatibility

identityHashCode

public static int identityHashCode(Object o)

setErr

public static void setErr(PrintStream err)

setOut

public static void setOut(PrintStream out)