FilesExpand file tree

 master

/

Observer.java

Copy path

BlameMore file actions

BlameMore file actions

Latest commit

 

History

History

History

47 lines (46 loc) · 938 Bytes

 master

/

Observer.java

Top

File metadata and controls

• Code
• Blame

47 lines (46 loc) · 938 Bytes

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

/*

* Copyright (c) 1994, 1998, Oracle and/or its affiliates. All rights reserved.

* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*/

package java.util;

/**

* A class can implement the <code>Observer</code> interface when it

* wants to be informed of changes in observable objects.

*

* @author Chris Warth

* @see java.util.Observable

* @since JDK1.0

*/

public interface Observer {

/**

* This method is called whenever the observed object is changed. An

* application calls an <tt>Observable</tt> object's

* <code>notifyObservers</code> method to have all the object's

* observers notified of the change.

*

* @param o the observable object.

* @param arg an argument passed to the <code>notifyObservers</code>

* method.

*/

void update(Observable o, Object arg);

}