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| 2. 15. 2. 缩小转换 |
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The narrowing conversion occurs from a type to a different type that has a smaller size,
such as from a long (64 bits) to an int (32 bits). |
In general, the narrowing primitive conversion can occur in these cases: |
- short to byte or char
- char to byte or short
- int to byte, short, or char
- long to byte, short, or char
- float to byte, short, char, int, or long
- double to byte, short, char, int, long, or float
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- The narrowing primitive conversion must be explicit.
- You need to specify the target type in parentheses.
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public class MainClass {
public static void main(String[] args) {
long a = 10;
int b = (int) a; // narrowing conversion
System.out.println(a);
System.out.println(b);
}
}
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