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What is type casting and what is the danger of casting from one type to another?
Wiki User
∙ 14y ago
Type casting means that you explicitly convert from one type to another. Consider this example:
int x;
long y = 10;
x = y;
The compiler will protest, because of a possible overflow. Now, if you are confident - from a knowledge of the computer program you wrote - that there will be no overflow, you can explicitly:
x = (int) y;
You are telling the compiler that you know what you are doing. The danger, of course, is that you may be wrong, and there may still be an overflow.
The situation is similar if you convert from double to float, or from double or float, to integer. In all of these cases, there is a loss of precision.
Wiki User
∙ 14y ago
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