How can i make a Number Format Like 000"+"000 in android

Question

I want to make a number format like 000"+"000. The rule will be 3 digits "+" 3 digits. I will give you some examples below.

I have tried some codes before i will show them below. I think i have to use NumberFormat class. My codes are below. by the way my number maximum have 6 digits if number has less digits the missing digits(which will be in left), has to be 0.

I tried

NumberFormat numberFormat = new DecimalFormat("000'+'000");

but it gave error which is

Unquoted special character '0' in pattern "000'+'000"

but it was worked when i make

NumberFormat numberFormat = new DecimalFormat("'+'000");

or

NumberFormat numberFormat = new DecimalFormat("000'+'");

So simply i can make number-plus or plus-number but i can't make number(3 digit)-plus-number(3 digit)

I expect to get these outputs for these inputs:

input: 4032

output: 004+032

input : 5

output: 000+005

input: 123450

output: 123+450

input: 10450

output: 010+450

Answer 1

With a trick: change the grouping separator symbol to +:

DecimalFormatSymbols symbols = new DecimalFormatSymbols(Locale.getDefault());
symbols.setGroupingSeparator('+');
NumberFormat nf = new DecimalFormat("000,000", symbols);

int x = 3250;
System.out.println(nf.format(x));

Result:

003+250

Or use a method like this:

public static String specialFormat(int number) {
    NumberFormat nf = new DecimalFormat("000");
    return nf.format(number / 1000) + "+" + nf.format(number % 1000);
}

it formats separately the 3 first digits and the 3 last digits and concatenates with a + in the middle.
Use it:

int x = 5023;
System.out.println(specialFormat(x));

Result:

005+023