int cannot be dereferenced (please help me!!!!)

[ilovelinux2006]

Hey everyone,

I am creating a simple Java program. Thats suppose to output:

Enter integer of up to 4 digits in size: 368
Thousands place: 0
Hundreds place: 3
Tens place: 6
Ones place: 8

So im using the int:

Scanner keyinput = new Scanner(System.in);
System.out.print("Enter integer of up to 4 digits in size: ");
int digit = keyinput.nextInt();
int v1;
v1 = digit.substring(3,4);
System.out.println("Thousands place: " + v1);


But I keep getting this error when i compile the program:

int cannot be dereferenced
v2 = digit.substring(3,4);
^

I realize I cannot use substring with my variable digit when digit is an int. How can I enter only a 3 digit number, and receive a thousands place? Please help me fix!

 

[ilovelinux2006]

the error is v1 not v2 *

 

[Miros]

You're better off only working with integers:

ones = digit % 10 ;
tens = digit / 10 % 10 ;
hundreds = digit / 100 % 100 ;
thousands = digit / 1000 ;

 

[stefanwagner]

int digit = keyinput.nextInt();
v1 = digit.substring(3,4);

int cannot be dereferenced

int is a primitive and doesn't have a method .substring (3, 4);


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[Miros]

If you must use strings, digit.toString() can then be manipulated with substring and other String methods.

 

[timw]

To repeat Stefan's statement :-

int is a primitive and has no methods. You cannot call a toString method on it.

If you want a string version of a primitive integer, use the static method of the Integer wrapper.

String strDigits = Integer.toString(digit);

Tim