int turn String
int A:
A + ""
String.valueOf (A)
Interger.toString (A)
is generally carried out using the above methods transforming
the first method efficiency is not good, java source of the '+' operator is overloaded using StringBuilder or StringBuffer achieved, and the new new StringBuilder StringBuilder.toString operations affect transformation efficiency. And this method will produce a plurality of objects, not recommended
internal call Interger.toString String.valueOf method, it is recommended that a third
String transfected int
the Integer.parseInt (S)
Integer.valueOf (S) .intValue ()
first the recommended method, a static method directly call
the first method the second method is called internally, but will generate more than objects
Original: https: //blog.csdn.net/LJJZJ/article/details/89459402