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String regex="[^\u4E00-\u9FA5a-zA-Z0-9]+";
Pattern pattern = Pattern.compile(regex);
Matcher match=pattern.matcher(s);
boolean b=match.matches();
if(b)
{
return false;
}
else
{
return true;
}
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Java code:

String regex="^[a-zA-Z0-9\u4E00-\u9FA5]+$";
Pattern pattern = Pattern.compile(regex);
Matcher match=pattern.matcher(s);
boolean b=match.matches();
if(b)
{
return true;
}
else
{
return false;
}





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