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import java.text.*; public class Test { public static void main(String[] args) { double jellen = 0.00025; NumberFormat formatter = NumberFormat.getNumberInstance(); formatter.setMaximumFractionDigits(5); //設(shè)置最大小數(shù)位 String s = formatter.format(jellen); System.out.println(jellen); System.out.println(s); } } |
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