test a string has only alphabets [a-zA-Z]

[Matt]

If I want to test a string has only alphabets [a-zA-Z], there is no
String API to do that.
Is that true? I guess the best approach is to use reg expression.
Please advise. thanks!

boolean testAlphaString(String s)

 

[Thomas Kellerer]

Matt wrote on 21.08.2004 17:13:

If I want to test a string has only alphabets [a-zA-Z], there is no
String API to do that.
Is that true? I guess the best approach is to use reg expression.
Please advise. thanks!

boolean testAlphaString(String s)

A quick look into the Javadoc of String reveals the following method:

<http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html#matches(java.lang.String)>

public boolean testAlphaString(String s)
{
return s.matches("[a-zA-Z]");
}

This can be tuned by pre-compling the pattern using Pattern.compile()

Thomas

 

[Paul Lutus]

If I want to test a string has only alphabets [a-zA-Z], there is no
String API to do that.
Is that true? I guess the best approach is to use reg expression.
Please advise. thanks!

Here's my advice. Don't multi-post.

 

[Thomas Schodt]

public boolean testAlphaString(String s)
{
return s.matches("[a-zA-Z]");
}

You left a bug in there as an exercise for the OP ?
I would not imagine OP is familiar with regex syntax,
so a hint might be in order:

The above matches only
strings that consist of exactly 1 alpha character (us-ascii letter).

 

[Thomas Kellerer]

Thomas Schodt wrote on 21.08.2004 17:41:

public boolean testAlphaString(String s)
{
return s.matches("[a-zA-Z]");
}

You left a bug in there as an exercise for the OP ?
I would not imagine OP is familiar with regex syntax,
so a hint might be in order:

The above matches only
strings that consist of exactly 1 alpha character (us-ascii letter).

Of course you are right

I did not intend to.
I simply copied the example of the OP into the regex (as he already gave an
example of the "desired" regex)

Thomas