Three methods of Java separator __string go to separator

The string is processed using the

Method One:

String str = "1,000";
str = str. Replace (",", "");

Method Two:

String str = "100,000,000";

String str1 = "";
string[] A = str. Split (', ');
for (int i = 0; I <= a.length-1; i++) {
STR1 + = A[i];
}

Method Three:

Using DecimalFormat

Implement formatting in the format you want please look down--------------------------decimalformat usage
DecimalFormat is a specific subclass of NumberFormat that is used to format decimal digits.

DecimalFormat contains a pattern and a set of symbols

Symbolic Meaning:  

01 digits  

# A number, excluding 0 ,

. Placeholder   for separator of decimal,

, placeholder for grouping delimiters  

, separating the formatting. &NBSP

-default negative number prefix. &NBSP

% multiplied by 100 and displayed as a percentage  

multiplied by 1000 and displayed as a thousand currency symbol, replaced by currency notation, and replaced with a  

International currency symbol if double write. If it appears in a pattern, the   is replaced with the currency decimal separator, and the

is the decimal separator. Any other character used in the  

X prefix or suffix to refer to the special characters in the prefix or suffix. &NBSP

Example:  

DecimalFormat df1 = new DecimalFormat ("0.0");  

DecimalFormat df2 = new Deci Malformat ("#.#");  

DecimalFormat df3 = new DecimalFormat ("000.000");  

DecimalFormat df4 = new DecimalFormat ("###.###");  

System.out.println (Df1.format (12.34));  

System.out.println ( Df2.format (12.34));  

System.out.println (Df3.format (12.34));  

System.out.println ( Df4.format (12.34));  

Result:  

12.3 

12.3 

012.340 

12.34