Class KontoC

java.lang.Object
  KontoC

All Implemented Interfaces:

Konto

public class KontoC
extends java.lang.Object
implements Konto

Konto version C. Uses java.util.concurrent mutexes to synchronize and coordinate. Implements methods to display, add and remove money from the account, account cannot become negative.

Author:

Heinz Kredel.

Field Summary

protected java.util.concurrent.locks.Condition	imPlus
protected java.util.concurrent.locks.Lock	mutex
protected double	stand

Constructor Summary

KontoC()

KontoC(double a)

Method Summary

double	getGeld(double b) New account balance gets calculated and returned.
double	putGeld(double b) Transfers amount to this account.
double	zeigeGeld() Displays account balance.

Methods inherited from class java.lang.Object

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

Field Detail

stand

protected double stand

mutex

protected final java.util.concurrent.locks.Lock mutex

imPlus

protected final java.util.concurrent.locks.Condition imPlus

Constructor Detail

KontoC

public KontoC()

KontoC

public KontoC(double a)

Method Detail

zeigeGeld

public double zeigeGeld()

Displays account balance.

Specified by:

zeigeGeld in interface Konto

Returns:

stand.

putGeld

public double putGeld(double b)

Transfers amount to this account. Blocks if account would become negative.

Specified by:

putGeld in interface Konto

Parameters:

b - amount to put on account.

Returns:

s returns actual balance from account.

getGeld

public double getGeld(double b)

New account balance gets calculated and returned. Blocks if account would become negative.

Specified by:

getGeld in interface Konto

Parameters:

b - amount to remove from desired account.

Returns:

s current account balance.