http://blog.youkuaiyun.com/u012246458/article/details/49359495
- 1.Integer转换成int的方法
- Integer i = new Integer(10);
- int k = i.intValue();
- 即Integer.intValue();
- 2.int转换成Integer
- int i = 10;
- Integer it = new Integer(i);
- 3.String转换成int的方法
- String str = "10";
- Integer it = new Interger(str);
- int i = it.intValue();
- 即:int i = Integer.intValue(string);
- 4.int转换成String
- int i = 10;
- (1)String s = String.valueOf(i);
- (2)String s = Ingeger.toString(i);
- (3)String s = "" + i;
- 5.String转换成Integer
- String str = "10";
- Integer it = Integer.valueOf(str);
- 6.Integer转换成String
- Integer it = new Integer(10);
- String str = it.toString();
- 7.String转换成BigDecimal
- BigDecimal bd = new BigDecimal(str);
- 8.日期
- Calendar calendar = Calendar.getInstance();
- int year = calendar.get(Calendar.YEAR);
- int month = calendar.get(Calendar.MONTH)+1;
- int day = calendar.get(Calendar.DATE);
- //获取今天的日期字符串
- String today = java.text.DateFormat.getDateInstance().format(new java.util.Date());
- //获取今天的日期
- new java.sql.Date(System.currentTimeMillis());
- 9.Double 转换成 String
- //方式一
- String.valueOf(d);
- //方式二
- String str = ""+d;