1、类型转换,double->Double->四舍五入->long->Long->int
double d= scanner.nextDouble();
Double dd = (Double)d;
long i = Math.round(dd);
Long i1 = (Long)i;
int i2 = i1.intvalue();
1、类型转换,double->Double->四舍五入->long->Long->intdouble d= scanner.nextDouble();Double dd = (Double)d;long i = Math.round(dd);Long i1 = (Long)i;int i2 = i1.intvalue();...
1、类型转换,double->Double->四舍五入->long->Long->int
double d= scanner.nextDouble();
Double dd = (Double)d;
long i = Math.round(dd);
Long i1 = (Long)i;
int i2 = i1.intvalue();
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