问Java int总是32位吗？

EN

public static void main(String args[]){
    
    String max_long = "9223372036854775807";
    String min_long = "-9223372036854775808";
    
    BigInteger b1 = new BigInteger(max_long);
    BigInteger b2 = new BigInteger(min_long);
    
    BigInteger sum = b1.add(b1);
    BigInteger difference = b2.subtract(b1);
    BigInteger product = b1.multiply(b2);
    BigInteger quotient = b1.divide(b1);
    
    System.out.println("The sum is: " + sum);
    System.out.println("The difference is: " + difference);
    System.out.println("The product is: " + product);
    System.out.println("The quotient is: " + quotient);
    
}