/* 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
{
{
List
<String
> foo
= Arrays.
asList("hello",
null,
"world"); System.
out.
printf("%b%n", foo.
contains(x
)); }
}
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