/* 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
{
{
String s
= "Hel.l$o wo..rl#d"; System.
out.
println(s.
replaceAll("[^\\w\\s]+",
"")); System.
out.
println(s.
replaceAll("[\\W&&[^\\s]]+",
"")); }
}
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