casting String to ?

[somkiat puisungnoen]

Originally posted by Erik Cederqvist:
Hallo I have a small problem whit my programing.
I read in a String from a objekt but I will have it to a int, double, flot
or somthing else.

thankz for helping me
erik

Sometime, you should be checked your input from object, it's correct type or not.

[Erik Cederqvist]

Hallo I have a small problem whit my programing.
I read in a String from a objekt but I will have it to a int, double, flot
or somthing else.

thankz for helping me
erik

[Ernest Friedman-Hill]

Hi,

Welcome to JavaRanch!

There are static methods in the Integer, Long, Double, and Float classes that can convert a String to an int, long, double, or float, respectively. For example,

  String s = "1234";
  int i = Integer.parseInt(s);

Be aware that all these methods can throw NumberFormatExceptions, and a robust program will catch this exception and report that the String didn't contain a valid number.

[David Ulicny]

Double.parseDouble(String s)
it is same for the other numeric types

[Ilja Preuss]

Please note that this type of coversion is *not* called "casting"!

[Erik Cederqvist]

ok thanks a lot for the help

have a nice day

erik

[Ko Ko Naing]

Originally posted by Ilja Preuss:
Please note that this type of coversion is *not* called "casting"!

Ilja, thanks for the nice pointer on the subject of the thread... I also have been misled to this thread by reading the subject "casting String to?". I am wondering what kind of object rather than Object does the String can cast to?