/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
List
<String
> strs
= Arrays.
asList("311001",
"311 001",
"ds311001NM",
"ds311 001NM",
"asd,.;546798;l';",
"asd,.;546798;l';",
"asd,.; 546798;l';",
"asd,.; 546798 ;l';",
"asd,.; 546 798 ;l';",
"asd,.;546 798 ;l';"); Pattern p = Pattern.compile("\\d{3}\\s*\\d{3}");
Matcher m = p.matcher(str);
if (m.find()) {
System.
out.
println(m.
group()); }
}
}
}
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