# Number Dealer
###### tags: `Java`

[TOC]

## Add Comma for thousands

### NumberFormat: setGroupingUsed(boolean)

NumberFormat nFormat = NumberFormat.getInstance();
nFormat.setGroupingUsed(true); 

nFormat.format("input number here")

>**Method setGroupingUsed Note**
> * Set comma every 3 digits
> * Round up numbers
> * Set up to 3 decimal places [color=pink]

**Example:**

NumberFormat nFormat = NumberFormat.getInstance();
nFormat.setGroupingUsed(true); 

System.out.println(nFormat.format(1.5678)); 
System.out.println(nFormat.format(55888)); 
System.out.println(nFormat.format(86555.15)); 

//Output
//1.568
//55,888
//86,555.15

### DecimalFormat: setGroupingUsed(boolean) && setGroupingSize(Integer)

>**Method setGroupingSize Note**
> * Set comma every n digits depending on the Integer [color=pink]

DecimalFormat nFormat = DecimalFormat.getInstance("#.##");
nFormat.setGroupingUsed(true); 
nFormat.setGroupingSize(3); 

nFormat.format("input number here")

**Example:**

DecimalFormat nFormat = DecimalFormat.getInstance("#.##");
nFormat.setGroupingUsed(true); 
nFormat.setGroupingSize(3); 

System.out.println(nFormat.format(1.5678)); 
System.out.println(nFormat.format(55888)); 
System.out.println(nFormat.format(86555.15)); 

//Output
//1.57
//55,888
//86,555.15