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Java Regular Expression

In Java programming, how do we check whether the following text contains a piece of information encoded in an <ns1:Elmt> XML element?

This is a preamble #@&%)#*#)$

<ns1:Elmt ns1="uri:ns1" ns2="uri:ns2">
  <ns1:SubElmt attr1="value_1">
    <ns2:elmt>value_2</ns2:elmt>
  </ns1:SubElmt>
</ns1:Elmt>

Here is a little bit more text

3254832 3249028 ~#)*@()(84)_$-

An answer: Use the string.matches() method and the following regular expression
[\s\S]*<ns1:Elmt[\s\S]*</ns1:Elmt>[\s\S]*

Check the following websites and you'll learn how regular expression can ease our programming problems!

Wikipedia : Regular Expression
java.util.regex.Pattern (Java 2 Platform SE 5.0)
Regular-Expressions.info Tutorial

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