Object-Oriented Techniques - Java - page 312

public public int int setValue ( int int i ) {

value = i ;
return

return value ;

}

public public int int getValue () {

return return value ;

}

public public String toString () {

return

return Integer . toString ( value );

}

public public static static String toString ( int int val ) {

return return Integer . toString ( val );

}

public public static static int int parseInt ( String str ) {

return return Integer . parseInt ( str );

}

}

See Also

As mentioned, this use of my MutableInteger class could be replaced with the standard
class ParsePosition . However, MutableInteger has other uses: it makes a fine in-memory
counter in a servlet or other application. For immutable argument passing, one solution is to
use Java's typesafe enumeration pattern ( enum s, which have been in the language for a dec-
ade; see Using Typesafe Enumerations ).

Using Typesafe Enumerations

Problem

You need to manage a small list of discrete values within a program.

Solution

Use the Java enum mechanism.