RosettaCodeData/Task/Balanced-brackets/Java/balanced-brackets.java

grammar balancedBrackets ;

options {
    language = Java;
}

bb  :   {System.out.print("input is: ");} (balancedBrackets {System.out.print($balancedBrackets.text);})* NEWLINE {System.out.println();}
    ;
balancedBrackets
    :   OpenBracket balancedBrackets* CloseBracket
    ;
OpenBracket
    :   '['
    ;
CloseBracket
    :   ']'
    ;
NEWLINE :   '\r'? '\n'
    ;