import java.text.NumberFormat;
public class format { double f = 111231.5585; public void m1() { BigDecimal bg = new BigDecimal(f); double f1 = bg.setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue(); System.out.println(f1);
}
/** * DecimalFormat转换最简便
*/
public void m2() {
DecimalFormat df = new DecimalFormat("#.00"); System.out.println(df.format(f));}
/** * String.format打印最简便
*/
public void m3() {
System.out.println(String.format("%.2f", f)); } public void m4() { NumberFormat nf = NumberFormat.getNumberInstance(); nf.setMaximumFractionDigits(2); System.out.println(nf.format(f)); } public static void main(String[] args) { format f = new format(); f.m1(); f.m2(); f.m3(); f.m4(); }}
转载地址：breeze_cool
