数据类型之间的运算

package operator;

import static java.lang.Character.getType;

public class Demo02 {
    public static void main(String[] args) {
        long a = 123123123123123L;
        int b = 123;
        short c = 10;
        byte d = 8;
        double pi = 3.14;
        System.out.println(pi+a+b+c+d);
        System.out.println(a+b+c+d);//long
        System.out.println(b+c+d);//Int
        System.out.println (c+d);//Int     任意非long整数运算，结果总是Int型
    }
}