System (JanosRuntime JavaDOC)

java.lang.Object
- java.lang.System

public final class System
extends Object

Field Summary

Fields
Modifier and Type	Field and Description
`static PrintStream`	`err` The active ERROR stream typically stderr.
`static InputStream`	`in` The active INPUT stream typically stdin.
`static PrintStream`	`out` The active OUTPUT stream typically stdout.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`arraycopy(Object src, int ofs, Object dest, int start, int len)` Copies `length` elements from the `src` array at index `src_position` to the `dst` array at index `dst_position`.
`static long`	`currentTimeMillis()` Returns the current time in milliseconds since the January 1st 1970 at 00:00:00 GMT epoch.
`static void`	`exit(int errorlevel)` Terminates the current program.
`static void`	`gc()` Suggests that JANOS performs Garbage Collection (GC) procedures.
`static String`	`getenv(String name)` Obtains a value from the current process environment.
`static SecurityManager`	`getSecurityManager()` Obtain the current SecurityManager.
`static int`	`identityHashCode(Object obj)` 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 void`	`setenv(String name, String value)` Sets a value in the current process environment.
`static void`	`setErr(PrintStream errorstream)` Reassigns the "standard" error stream.
`static void`	`setIn(InputStream inputstream)` Reassigns the "standard" input stream.
`static void`	`setOut(PrintStream outputstream)` Reassigns the "standard" output stream.
`static void`	`setSecurityManager(SecurityManager securitymanager)` Defines a Security Manager for this process.
`static void`	`sleep(long period)` Facilitates using (@code Thread.sleep()} by providing the necessary exception handling.
`static void`	`waitUntil(long time)` Utilizes Thread.sleep() to pause the current process until a specified time.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - in
```
public static InputStream in
```
    The active INPUT stream typically stdin. Note that the SerialInputStream class supports echo to stdout.
  - out
```
public static PrintStream out
```
    The active OUTPUT stream typically stdout.
  - err
```
public static PrintStream err
```
    The active ERROR stream typically stderr. By default JANOS copies stderr data to the errors.log file located in the root of the file system.
- Method Detail
  - arraycopy
```
public static void arraycopy(Object src,
                             int ofs,
                             Object dest,
                             int start,
                             int len)
```
    Copies length elements from the src array at index src_position to the dst array at index dst_position. The src and dst arrays must be of the same type.
    
    Parameters:
    
    src - source array
    
    ofs - starting index in source array
    
    dest - target array
    
    start - starting index in target array
    
    len - number of elements to copy
  - currentTimeMillis
```
public static long currentTimeMillis()
```
    Returns the current time in milliseconds since the January 1st 1970 at 00:00:00 GMT epoch. This is the Unix timestamp expressed in milliseconds (not seconds).
    
    Returns:
    
    current time expressed in milliseconds
    
    See Also:
    
    JANOS.uptimeMillis()
  - sleep
```
public static void sleep(long period)
```
    Facilitates using (@code Thread.sleep()} by providing the necessary exception handling.
    
    Parameters:
    
    period - time in milliseconds that the thread will sleep.
  - waitUntil
```
public static void waitUntil(long time)
```
    Utilizes Thread.sleep() to pause the current process until a specified time.
    
    Parameters:
    
    time - The current system time in milliseconds at which execution is to begin.
  - exit
```
public static void exit(int errorlevel)
```
    Terminates the current program.
    
    Parameters:
    
    errorlevel - Returns an integer ERRORLEVEL for command line use.
  - gc
```
public static void gc()
```
    Suggests that JANOS performs Garbage Collection (GC) procedures.
  - getSecurityManager
```
public static SecurityManager getSecurityManager()
```
    Obtain the current SecurityManager.
    
    Returns:
    
    SecurityManager object.
  - getenv
```
public static String getenv(String name)
```
    Obtains a value from the current process environment. This uses the JANOS.getFromCurrentEnvironment(name) method.
    
    Parameters:
    
    name - String specifying the name-value pair
    
    Returns:
    
    value associated with the name
  - setenv
```
public static void setenv(String name,
                          String value)
```
    Sets a value in the current process environment. This uses the JANOS.setInCurrentEnvironment(name, value) method.
    
    Parameters:
    
    name - String defining the name for the name-value pair
    
    value - String defining the value to be assigned to the name-value pair
  - identityHashCode
```
public static int identityHashCode(Object obj)
```
    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(). The hash code for the null reference is zero.
    
    Parameters:
    
    obj - object for which the hashCode is to be calculated
    
    Returns:
    
    the hashCode
  - setIn
```
public static void setIn(InputStream inputstream)
```
    Reassigns the "standard" input stream.
    
    Parameters:
    
    inputstream - the new standard output stream
  - setOut
```
public static void setOut(PrintStream outputstream)
```
    Reassigns the "standard" output stream.
    
    Parameters:
    
    outputstream - the new standard output stream
  - setErr
```
public static void setErr(PrintStream errorstream)
```
    Reassigns the "standard" error stream.
    
    Parameters:
    
    errorstream - the new standard error stream
  - setSecurityManager
```
public static void setSecurityManager(SecurityManager securitymanager)
```
    Defines a Security Manager for this process.
    
    Parameters:
    
    securitymanager - The SecurityManager object.

Class System

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

in

out

err

Method Detail

arraycopy

currentTimeMillis

sleep

waitUntil

exit

gc

getSecurityManager

getenv

setenv

identityHashCode

setIn

setOut

setErr

setSecurityManager