Determine if a string is numeric: Difference between revisions
→{{header|Java}}
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=={{header|Java}}==
Typically, you would use the 'parse' methods from either the ''Integer'', ''Long'', ''Float'', or ''Double'' class, <br />which will throw a ''NumberFormatException'' for ill-formed values.<br />
For example
<syntaxhighlight lang="java">
Integer.parseInt("12345")
</syntaxhighlight>
<syntaxhighlight lang="java">
Float.parseFloat("123.456")
</syntaxhighlight>
The performance mark is somewhat negligible between a try-block and custom methods.
<syntaxhighlight lang="java">
public static void main(String[] args) {
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