Java Reference
In-Depth Information
boolean disconnect();
boolean log(String msg);
}
Eachofthe
connect()
,
disconnect()
,and
log()
methodsreturnstrueupon
success, and false upon failure. (Later in this chapter, you will discover a better tech-
niquefordealingwithfailure.)Thesemethodsarenotdeclared
public
explicitlybe-
cause an interface's methods are implicitly
public
.
Listing 3-18.
Obtaining a logger for logging messages to a specific destination
package logging;
public abstract class LoggerFactory
{
public final static int CONSOLE = 0;
public final static int FILE = 1;
public static Logger newLogger(int dstType, String...
dstName)
{
switch (dstType)
{
case CONSOLE: return new Console(dstName.length ==
0 ? null
dstName[0]);
case FILE
: return new File(dstName.length == 0
? null
:
dstName[0]);
default
: return null;
}
}
}
