1)将字符串转化为整型; int i = Integer.parseInt(String str); int i = Integer.valueOf(String str).intValue(); 注:Integer.parseInt和 Integer.valueOf 不同,前者生成的是整型,而后者是一个对象,所以要通过intValue()来获得对象的值; 2) 整型转化为字符串: String ... ...
Ifvalueis a complex expression, it may be beneficial to wrap it in parentheses. (type)(value) Examples stringa="1.5";floatb=(float)a;integerc=(integer)a;integeri;i=(integer)1.23;// 1i=(integer)-1.23;// -1i=(integer)"0123";// 123i=(integer)"0x12A";// 298i=(integer)" -5 ...
Changing a value's representation.C and C++ are full of "standard conversions" that change one type into another. Some are done implicitly, but for others, you have to use a casting operator. Let's say we want to find the integer part of a floating point value. We can say: float f ...