第二章2.1强制类型转换package day1;public class ONE { public static void main(String[] args) { // TODO Auto-generated method stub byte b; int i=300; long l=8000; double d=325.561; System.out.println("Conversion of int to byte."); b=(byte)i; System.out.println("i and b"+i+" "+b); System.out.println("Conversion of int to long."); l=i; System.out.println("i and l"+i+" "+l); long lo=8000; System.out.println("Conversion of long to int."); i=(int)lo; System.out.println("i and lo"+i+" "+lo); System.out.println("Conversion of double to int."); i=(int)d; System.out.println("d and i"+d+" "+i); System.out.println("Conversion of double to byte."); i=(byte)d; System.out.println("d and b"+d+" "+b); }}结果Conversion of int to byte.i and b300 44Conversion of int to long.i and l300 300Conversion of long to int.i and lo8000 8000Conversion of double to int.d and i325.561 325Conversion of double to byte.d and b325.561 44