question: public LinkedList < Diff > diff_main ( String text1 , String text2 , boolean checklines ) { long deadline ; if ( Diff_Timeout <= 0 ) { deadline = Long . MAX_VALUE ; } else { deadline = System . currentTimeMillis ( ) + ( long ) ( Diff_Timeout * 1000 ) ; } return diff_main ( text1 , text2 , checklines , deadline ) ; }
target:  Find the differences between two texts.