<D>
小弟果然頭腦相當不清楚 @_@
一直把Hex 填1 ~_~
public class CheckOF{
public static void main(String[] args){
final int var1 = 0xFFFFFFFF;
final long MICROS_PER_DAY = 24 * 60 * 60 * 1000 * 1000;
final long MILLIS_PER_DAY = 24 * 60 * 60 * 1000;
if((var1 & (MICROS_PER_DAY >> 32)) != 0)
System.out.println("MICROS_PER_DAY Overflow!!!" + var1);
if((var1 & (MILLIS_PER_DAY >> 32)) != 0)
System.out.println("MILLIS_PER_DAY Overflow!!!" + var1);
}
}
後來發現這運算過程也還是不行
果然還是只能在數值後掛上一個 L 比較快一些
final long MICROS_PER_DAY = 24L * 60 * 60 * 1000 * 1000;
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嘿嘿..我是huge..
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