Conversions between string, Integer, int in Java data type

Turn from:

Http://www.blogjava.net/ljc-java/archive/2011/02/28/345344.html

1.Integer Convert to int method

Integer i = new Integer (10);
int k = I.intvalue ();
namely Integer.intvalue ();

2.int Convert to Integer

int i = 10;

Integer it = new Integer (i);

3.String Convert to int method

String str = "10";
Integer it = new Interger (str);

int i = It.intvalue ();

That is: int i = Integer.intvalue (string);

4.int Conversion to String

int i = 10;

(1) String s = string.valueof (i);

(2) String s = ingeger.tostring (i);

(3) String s = "" + I;

5.String Convert to Integer

String str = "10";

Integer it = integer.valueof (str);

6.Integer Conversion to String

Integer it = new Integer (10);

String str = it.tostring ();

7.String conversion to BigDecimal

BigDecimal bd = new BigDecimal (str);

8. Date

Calendar calendar = Calendar.getinstance ();
int year = Calendar.get (calendar.year);
int month = Calendar.get (calendar.month) +1;
int day = Calendar.get (calendar.date);

Get today's date string
String today = java.text.DateFormat.getDateInstance (). Format (new java.util.Date ());
Get today's date
New Java.sql.Date (System.currenttimemillis ());

Conversions between string, Integer, int in Java data type