类型的使用

package operator;

public class Demo02 {
public static void main(String[] args) {
long a = 1_231_123_123_123L;
int b = 123;
short c = 10;
byte d = 8;
System.out.println(a+b+c+d);//有long类型结果为long类型
System.out.println(d+b+c);
System.out.println(c+d);
System.out.println(a+d);//超出范围

}

}