/* 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
{
public static void main
(String[] args
) {
getCommon(s1,s2);
}
char[] s1Array = s1.toCharArray();
char [] s2Array = s2.toCharArray();
Set<Character>s1CharSet = new HashSet<Character>();
Set<Character>s2CharSet = new HashSet<Character>();
for(char c:s1Array){
s1CharSet.add(c);
}
for(char c: s2Array){
s2CharSet.add(c);
}
s1CharSet.retainAll(s2CharSet);
if(s1CharSet.size()==0){
System.
out.
println("There are no common characters between the two strings"); }
else{
System.
out.
println(s1CharSet
); }
}
}
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