The difference between Java-----instanceof and GetClass

When comparing whether a class belongs to the same class instance as another class, we can usually use instanceof and getclass two methods to judge whether the two are equal, but there is a difference between the two in the judgment, the following from the code to see the difference:

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2. Public class Test
4. {
6. public static void testinstanceof (Object x)
8. {
10. System.out.println ("x instanceof Parent:" + (x instanceof parent));
12. System.out.println ("x instanceof Child:" + (x instanceof Child));
14. System.out.println ("x getclass Parent:" + (x.getclass () = = Parent .  Class));
16. System.out.println ("x getclass Child:" + (x.getclass () = = Child. )  Class));
18. }
20. public static void Main (string[] args) {
22. Testinstanceof (new Parent ());
24. System.out.println ("---------------------------");
26. Testinstanceof (new Child ());
28. }
30. }
32. Class Parent {
36. }
38. Class Child extends Parent {
42. }
44. /*
46. Output:
48. X instanceof Parent:true
50. X instanceof Child:false
52. X GetClass parent:true
54. X GetClass Child:false
56. ---------------------------
58. X instanceof Parent:true
60. X instanceof Child:true
62. X GetClass Parent:false
64. X GetClass child:true
66. */

As you can see from the program output, the instanceof type check rule is: Do you belong to this class? Or do you belong to a derived class of that class? The operation of obtaining type information by getclass using = = To check whether it is equal is strictly judged. There is no inheritance consideration;

The difference between Java-----instanceof and GetClass