Question

How to add comma to a number every 3 digits in Java

Answer 1

import java.text.DecimalFormat;

public class MyClass {
    public static void main(String args[]) {
        double f = 8494008356.07;
        
        DecimalFormat decimalFormat = new DecimalFormat("#.##");
        decimalFormat.setGroupingUsed(true);
        decimalFormat.setGroupingSize(3);
  
        System.out.println(decimalFormat.format(f));
    }
}


 
 
/*
run:
 
8,494,008,356.07
 
*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        double f = 8494008356.07;
        
        System.out.format("%,.2f\n", f);    
        System.out.format("%+,.2f", f); 
    }
}


  
  
/*
run:
  
8,494,008,356.07
+8,494,008,356.07

*/

 

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