java Long和long类型比较大小

                Long a = (long) 1000;
        Long b = (long) 1000;
        long c = 1000;
        long d = 1000;
        System.out.println("a == b:" + (a == b));
        System.out.println("c == d:" + (c == d));
        System.out.println("a.equals(b):" + a.equals(b));

输出：

a == b:false
c == d:true
a.equals(b):true

Long是包装类型，是对象，要用equals方法做比较；

long是基本数据类型，可以直接通过“>”,“==”，“<”作比较