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class Main {

private static Main inst = null;

public Main() {
  if(inst == null) {
     System.out.println("Refset false");
  } else {
     System.out.println("Refset true");
  }
}

public static void main(String []args) {
  inst = new Main();
}

}
Success #stdin #stdout 0.03s 245632KB
stdin
Standard input is empty
stdout
Refset false