I want to make an integer value from the range 1-9999. But the integer values should be always in 4 digits.
Like 0001, 0002, 0015, 0156, 1578
You can probably use String format of the integer you willing to, like this:
String.format("%04d", your integer));
This will always show missing 0 on the left on digits like 01 or 1.
System.out.format("%04d%n", n);
if you want to print 4 digit integer, use like this
System.out.printf("%04d%n",your integer);
if you want to store in a variable, use like this
String str=String.format("%04d", your integer));
使用
String.format("%04d", your integer));
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