hashcode and equals in java

Differences between =, equals, and hashcode in Java and the example of rewriting the equals and hashcode methods, using shashcode 1. Override the equals Method Instance part of the code reference http://blog.csdn.net/wangloveall/a

Setage (int.) {this.age = age; } public void SetName (String name) {this.name = name; } public String GetName () {return name; } public boolean equals (Object obj) {if (this = = obj) {return true; } if (null = = obj) {return false; } if (This.getclass () = Obj.getclass ()) {return false; } User user = (user) obj; if (This.name.equals (user.name) this.age = = User.age) {return true; } return

Differences between =, equals, and hashcode in Java and the example of rewriting equals and hashcode (conversion) and mongoshashcodeJava =, equals, hashcode difference and override

Learning notes-JAVA-test site 10-Under what conditions do I need to rewrite the equals and hashcode () Methods ?, -Java-hashcode I. Under what circumstances do I need to rewrite the equals and

In Java:= = is an operator that compares two variables for equality.Equals, is a method of the Objec class that compares two objects for equality, and the Equals method of the Default object class is to compare the addresses of two objects, just as the result of = =. The Equals method of object is as follows: [Java] vi

In Java:= = is an operator that compares two variables for equality.equals, is a method of the Objec class that compares two objects for equality, and the Equals method of the Default object class is to compare the addresses of two objects, just as the result of = =. The Equals method of object is as follows: public boolean

In Java:= = is an operator that compares two variables for equality.Equals, is a method of the Objec class that compares two objects for equality, and the Equals method of the Default object class is to compare the addresses of two objects, just as the result of = =. The Equals method of object is as follows: public boolean

Of course not. The hashcode and equals methods can be rewritten. If one of them is overwritten, but the other is not overwritten, this conclusion is obviously incorrect. The Code is as follows: Public class test { The running result is as follows: True Of course, we 'd better rewrite the hashcode method when rewriting the eq