The difference between equals and = =

1、== Whether two variables or instances point to the same memory space ,equals It is used to judge whether the value of the memory space pointed to by two variables or instances is the same
2、== It refers to the memory address to be compared ,equals（） Is a comparison of the contents of a string
3、 == Refers to whether the references are the same ,equals Refers to whether the values are the same

1、== Is a comparison operator ,equals（） yes object Methods in class
2、 The speed of computing is faster than equals（） fast , because It's just a comparison