Something about the hash code

1. In Java, the hash code represents the characteristics of an object.

For example, object String str1 = "AA", str1.hashcode= 3104String str2 = "BB", str2.hashcode= 3106String str3 = "AA", str3.hashcode= 3104According to Hashcode, we can draw STR1!=STR2,STR1==STR32.= = Compares the value of the two variable itself, which is the first address of two objects in memory. The equals method is a comparison for a string, and a comparison for a non-string

Whether the object it points to is the same.

Something about the hash code