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class Test{
  public static void main(String[] args){
    int big = 1999999999;
    double big_float = big;
    float one = 1.0f;
    System.out.println(big*one); // binary operation, loses precision due to implicit cast
    double big_float = big;
    System.out.println(big_float); // double is a wider type, preserves precision
  }
}

class Test{
  public static void main(String[] args){
    int big = 1999999999;
    double big_float = big;
    double one = 1.0d; // double instead of float
    System.out.println(big*one);
    double big_float = big;
    System.out.println(big_float);
  }
}