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New to Java- Desperately need some help on basic java program

1 reply on 1 page. Most recent reply: Mar 23, 2011 4:07 AM by Sourav Datta

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taylor m

Posts: 1
Nickname: tm02943
Registered: Mar, 2011

New to Java- Desperately need some help on basic java program

Posted: Mar 21, 2011 8:58 PM

I am very new to Java and cannot figure out this problem even with research and lots of time spent trying.

The question is:

Write a program that stores a number in an integer variable x. The program then prints all the numbers from x to 1 that ends with either 3 or 5 or 7

So far I have:

public static void main ( String [] a)
{
JOptionPane.showInputDialog(null, "Insert Number Here:");
int x;

}
}

Sourav Datta

Posts: 2
Nickname: soura20067
Registered: Aug, 2008

Re: New to Java- Desperately need some help on basic java program

Posted: Mar 23, 2011 4:07 AM

If x is the integer then the following snippet should do the required work:

for (int i = x; i >= 1; i--) {
String s = i + "";
char lastDigit = s.charAt(s.length() - 1);
if (lastDigit == '5' ||
lastDigit == '3' ||
lastDigit == '7')

System.out.println(i);
}

This needs to be put inside main right after you read the value of x.

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