package a0319v01;

public class a0319v01 {

public static void main (String[] args){

int score1 = 82;

double score2 = score1;

int score3 = (int)score2;

System.out.println("score1 = "+score1);

System.out.println("score2 = "+score2);

System.out.println("score3 = "+score3);

}

}

运行结果显示：

score1 = 82

score2 = 82.0

score3 = 82

请问，在编译 double score2 = score1; 这条语句时候，编译器是具体怎样进行的？为何score1类型转换后值没变？而后面强制类型转换 int score3 = (int)score2; 时候，score2内存里的数是如何让进行取舍，或者编译时候如何取整的？