Java에서 정수 오버플로 및 언더플로 처리

public class IntegerOverflow {
  public static void main(String[] args) {
    int Intvalue = Integer.MAX_VALUE - 1;
    for (int i = 0; i < 4; i++) {
      System.out.println(Intvalue);
      Intvalue = Math.addExact(Intvalue, 1);
    }
  }
}

2147483646
2147483647
Exception in thread "main" java.lang.ArithmeticException: integer overflow
    at java.base/java.lang.Math.addExact(Math.java:828)at IntegerOverflow.main(IntegerOverflow.java:9)

public class IntegerOverflow {
  public static void main(String[] args) {
    int Intvalue = Integer.MAX_VALUE - 1;
    long NewValue = (long) Intvalue; // Upgrading to new type
    for (int i = 0; i < 4; i++) {
      System.out.println(NewValue);
      NewValue = Math.addExact(NewValue, 1);
    }
  }
}

2147483646
2147483647
2147483648
2147483649

public class IntegerUnderflow {
  public static void main(String[] args) {
    int value = -2147483699; // Creating underflow intentionally
    System.out.println(value - 1);
  }
}

/IntegerUnderflow.java:3: error: integer number too large
    int value = -2147483699; // Creating underflow intentionally
                 ^
1 error

public class IntegerUnderflow {
  public static void main(String[] args) {
    long value = (long) -2147483638; // Type Casting
    System.out.println(value - 1);
  }
}

-2147483639