import java.io.*;
import java.util.*;

public class main {  
   public static void main (String[] args) {
      Question q = new Question("foo");
   }
}

------------------------------------
import java.io.*;

public class Question {  
   public Question(String data) {
      System.out.println(data);
   
   }
}

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cannot find symbol
symbol  : constructor Question()
location: class Question
      Question q = new Question();