specify java string length

Question

Ho do i specify the entered string to be between 30 and 60 characters?I tried the following but i get illegal start of expression error at (if) line.

public class Manipulation {
public static void main(String[] args) {

    // let the user enter a string
    OOPHelper.print("Please enter a string: ");
    String s = OOPHelper.readKeyboardString();

    if (s.length >=30) && (s.length <=60){
        OOPHelper.println(s);
    }
    else

chooban · Accepted Answer · 2012-03-11 14:05:37Z

10

You have a syntax error. Try...

if ( s.length() >=30 && s.length() <= 60) { ...

answered Mar 11, 2012 at 14:05

chooban

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Comments

ruakh · Accepted Answer · 2012-03-11 14:07:55Z

5

There are two problems:

In an if, the contents of the test-expression have to wrapped in (...). So, if (...) && (...) needs to be changed to if ((...) && (...)).
length is a public method, not a public field, so it needs to be called with parentheses. So, s.length needs to be changed to s.length().

Putting it together — change this line:

if (s.length >=30) && (s.length <=60){

to this:

if (s.length() >= 30 && s.length() <= 60) {

answered Mar 11, 2012 at 14:07

ruakh

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Comments

TeaCupApp · Accepted Answer · 2012-03-11 14:07:36Z

1

Your if statement should be, like

if (s.length() >= 30 && s.length() <= 60)
{
   OOPHelper.println(s);
}

answered Mar 11, 2012 at 14:07

TeaCupApp

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