In depth analysis of Java object replication

Java itself provides the ability of object replication There is a clone method in lang.Object class. This method is a protected method. You need to override this method in subclasses and declare it as a public type. In addition, you need to implement the clonable interface to provide the ability of object replication. Clone () is a native method. Generally speaking, the efficiency of the native method is much higher than that of the non native method in Java, If you are concerned about performance, first consider this method. There are many examples of this replication on the Internet, so don't write more; Another method to be used here is to copy objects through Java's reflection mechanism. This method may be less efficient than clone (), and does not support deep replication and replication of collection types, but its universality will be greatly improved. The following is the code for replication: