Java retains two decimal places in four ways, java two decimal places in four ways

Java retains two decimal places in four ways, java two decimal places in four ways
Four Methods for retaining two decimal places in java

Method 1: String format method (recommended)

Double f = 111231.5585;

System. out. println (String. format ("%. 2f", f ));

 

Method 2: format of DecimalFormat

Double f = 111231.5585;

DecimalFormat df = new DecimalFormat ("#. 00 ");
System. out. println (df. format (f ));

 

 

 

 

See the following content.

Method 3: setScale of BigDecimal

Double f = 111231.5585;

BigDecimal bg = new BigDecimal (f );
Double f1 = bg. setScale (2, BigDecimal. ROUND_HALF_UP). doubleValue ();
System. out. println (f1 );

 

Method 4: setMaximumFractionDigits method of NumberFormat

Double f = 111231.5585;

NumberFormat nf = NumberFormat. getNumberInstance ();
Nf. setMaximumFractionDigits (2 );
System. out. println (nf. format (f ));

 

Code:

1 import java. math. bigDecimal; 2 import java. text. decimalFormat; 3 import java. text. numberFormat; 4 public class format {5 double f = 111231.5585; 6 public void m1 () {7 BigDecimal bg = new BigDecimal (f); 8 double f1 = bg. setScale (2, BigDecimal. ROUND_HALF_UP ). doubleValue (); 9 System. out. println (f1); 10} 11/** 12 * DecimalFormat conversion simplest 13 */14 public void m2 () {15 DecimalFormat df = new DecimalFormat ("#. 00 "); 16 System. out. println (df. format (f); 17} 18/** 19 * String. format printing: 20 */21 public void m3 () {22 System. out. println (String. format ("%. 2f ", f); 23} 24 public void m4 () {25 NumberFormat nf = NumberFormat. getNumberInstance (); 26 nf. setMaximumFractionDigits (2); 27 System. out. println (nf. format (f); 28} 29 public static void main (String [] args) {30 format f = new format (); 31 f. m1 (); 32 f. m2 (); 33 f. m3 (); 34 f. m4 (); 35} 36}