Regular Expressions : In addition to a character 's character , how to write ?

Regular Expressions : In addition to a character 's character , how to write ?
example, in addition to a
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[^ a]



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[^a]

landlord can refer jdk help java.util.regex.Pattern document , there are some basic regular expressions summary.

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plus cycles can not get the last one
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LZ paste it does not end , nine did not post a knot
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immediately end
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to get the last matched string , several methods Matcher will not use < br> ------ For reference only ---------------------------------------
matcher.find () is next
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matcher.groupCount () how always returns 0
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this returns the number of captured group. .