/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
String s
= "@CORA-PC:1111:databasename"; String rx
= "@(?:\\w+(?:[-.]\\w+)*)?:\\d+:\\w+"; System.
out.
println(s.
matches(rx
)); }
}
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