constrain a string to 30 chars java

[oll3i]

how to constrain a string to 30 chars?

[dmjpro]

it is not still clear to me .... plz explain me in details

[oll3i]

sth like


public static final StringConstrain t FIRST_NAME_CONS TRAINT =
new StringConstrain t("firstName" , false, 30);

but this doesnt work for me cos eclipse highlights StringConstrain t as an error
and i did imports

[oll3i]

i need to constrain the property to string of eg 30 chars

[oll3i]

or sth like but again i get Constraint can not be resolved to a type error
public static Constraint FIRST_NAME = new MaxLengthConstr aint(30);

[sicarie]

or sth like but again i get Constraint can not be resolved to a type error
public static Constraint FIRST_NAME = new MaxLengthConstr aint(30);

An easy, but not quite elegant solution would be to use a while loop - while the contents are over 30, get the string, get the length of the string, test while loop again, print out a message if you want..

JavaDoc for String class

[oll3i]

i solved it i wrote a little validator class