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 44
Conversion of int to long.
i and l300 300
Conversion of long to int.
i and lo8000 8000
Conversion of double to int.
d and i325.561 325
Conversion of double to byte.
d and b325.561 44