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Thank you for answering!!!

That' s exactly what i needed!

Actually I've found a method to format a double in exponantial:

NumberFormat formatter = new DecimalFormat("0E0");
String s = formatter.format(-1234.567); // -1E3


However the method add(x,y) of XYSeries doesn't accept String as parameters!!!

Hello everybody,

Is there anybody who know , how should I do to put my axis' TickLabels in Exponantial Format?

200000 =>2E5

100000 =>1E5

10000 =>1E4