A brief talk on Javase object-oriented (object class ToString) _java

Each object has an address hash value in memory, and this hash value is hexadecimal

Calls the Hashcode () method of the Object object, returning the hash value of this object

Call the Integer.tohexstring () method to convert the hexadecimal

Call the object's ToString () method to get: Class name @ hash value

Usually we will make a copy of the ToString () method because the default does not mean much

The principle of implementation is the reflection of the class

When we create an object, a Xxx.class file is generated on the hard disk, and the JDK defines class classes to describe these class files

Call the Object object's GetClass () method to get the class object

Call the GetName () method of the class object to get the name of the class

public class Objectdemo {

  /**
   * @param args
   *
  /public static void main (string[] args) {
    Objectdemo od =new Objectdemo ();
    System.out.println (Od.tostring ());//Output objectdemo@26f04d94
    System.out.println (integer.tohexstring ( Od.hashcode ());//output 26f04d94
    
    //Reflection
    Class c=od.getclass ();
    System.out.println (C.getname () + "@" +integer.tohexstring (Od.hashcode ()));
  }

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