자바 소수점 자리수

12. NumberFormat nf= NumberFormat.getInstance(); 13. nf.setMaximumFractionDigits(4); 14. nf.setMinimumFractionDigits(2); 15. String a = nf.format(3.1415926); 16. String b = nf.format(2); The value of a is 3.1416 The value of b is 2.00