question: public static void print ( final PrintStream out , final String name , final Percentile p ) { if ( p . isReady ( ) ) { try { final StringBuilder sb = new StringBuilder ( 512 ) ; final float [ ] q = p . getQuantiles ( ) ; final float [ ] e = p . getEstimates ( ) ; final int SCREENWIDTH = 80 ; sb . append ( name ) ; sb . append ( ", min(" ) ; sb . append ( p . getMin ( ) ) ; sb . append ( "), max(" ) ; sb . append ( p . getMax ( ) ) ; sb . append ( ')' ) ; sb . append ( "\n" ) ; final float max = e [ e . length - 1 ] ; for ( int i = 0 ; i < q . length ; i ++ ) { sb . append ( String . format ( "%4.3f" , q [ i ] ) ) ; sb . append ( ": " ) ; final int len = ( int ) ( e [ i ] / max * SCREENWIDTH ) ; for ( int j = 0 ; j < len ; j ++ ) { sb . append ( '#' ) ; } sb . append ( " " ) ; sb . append ( String . format ( "%4.3f\n" , e [ i ] ) ) ; } out . println ( sb . toString ( ) ) ; } catch ( InsufficientSamplesException e ) { } } }
target:  print a nice histogram of percentiles