public class JUGG {
public static void main(String[] args) {
byte a = 10;
short b =20;
int c = 30;
long d =55;
int g1 =a;
int g2 = b;
int g3 = c;
int g4 = (int)d;
System.out.println("转换a:"+ g1);
System.out.println("转换b:"+ g2);
System.out.println("转换c:"+ g3);
System.out.println("转换d:"+ g4);
反之,则需要强制截断位数,所以必须强制转换
so,u‘r right