Interchange between BigDecimal and Long, int

In the actual development process, BigDecimal is a frequently used data type, which can be converted to and from int Long.

The conversion relationship is shown in the following code:

int to BigDecimal data type

　　// int is converted to bigDecimal type 
    public  static  void intToBigDecimal(){
         int b = 5 ;
        BigDecimal a = new BigDecimal(b);
        The data type of System.out.println(a + " is "+ a.getClass().getName());
    }

Convert Lont to BigDecimal data type

　　// Convert Long to bigDecimal 
    public  static  void longToBigDecimal(){
         long b = 5 ;
        BigDecimal a = new BigDecimal(b);
        The data type of System.out.println(a + " is "+ a.getClass().getName());
    }

Convert BigDecimal to Long data type

　　// bigDecimal is converted to Long type 
    public  static  void bigDecimalToLong(){
        BigDecimal b = new BigDecimal(12);
        Long c = b.longValue();
        The data type of System.out.println(c +" is "+ c.getClass().getName());
    }

Convert BigDecimal to int data type

　　　　// bigDecimal is converted to int type 
        public  static  void bigDecimalToInt(){
            BigDecimal b = new BigDecimal(12);
            int c = b.intValue();
        }