easier way to extract int from string?

[Imran Bhutta]

i have a string that a user enters like 1235432 and then i need it to extract the integer values from the string.....

  
 
String snum1 = input.substring(0,1);
String snum2 = input.substring(1,2);
String snum3 = input.substring(2,3);
String snum4 = input.substring(3,4);
String snum5 = input.substring(4,5);
String snum6 = input.substring(5,6);
String snum7 = input.substring(6,7);
String snum8 = input.substring(7,8);
String snum9 = input.substring(9,10);
int num1 = Integer.parseInt(snum1);
int num2 = Integer.parseInt(snum2);
int num3 = Integer.parseInt(snum3);
int num4 = Integer.parseInt(snum4);
int num5 = Integer.parseInt(snum5);
int num6 = Integer.parseInt(snum6);
int num7 = Integer.parseInt(snum7);
int num8 = Integer.parseInt(snum8);
int num9 = Integer.parseInt(snum9);

 

i have that but it only works if there are 9 integers... can anyone help?

[Ray Stojonic]

thankfully, Java has the ability to loop.

// declare appropriately sized int array

for( int i = 0; i < string.length(); ++i ) {
int n = Integer.parseInt( string.substring( i, i+1 ) );
//store n in array
}
[ October 31, 2004: Message edited by: Ray Stojonic ]

[Joyce Lee]

Hi Imran,

Alternatively, you can convert the String to int. Then use the % and / to extract the int value as suggested in this thread.

Joyce
[ October 31, 2004: Message edited by: Joyce Lee ]

[Imran Bhutta]

okk thankx for the loop!, but in an array how would i add the value? beacsue i need to get the total value of the number the user enteres and then i have to see if its % 10 and if it not i have to make it %10.... i konw n+n wont work beacsue its just gonna add n to the same number.

[Joyce Lee]

Hi Imran,

If you're trying to add up the individual digit of a number, you don't need to store them in an array.

For example:

  
int sum = 0;
for (int i = 0; i < 3; i++) {
    sum = sum + i; 
}

After getting the sum, you can find the remainder for (sum / 10) by using % operator.

  
int remainder = sum % 10;

i konw n+n wont work beacsue its just gonna add n to the same number.
Could you show us the code? Maybe we can point out the mistakes (if there's any) for you.

Joyce
[ November 01, 2004: Message edited by: Joyce Lee ]