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Built-in Java Annotations: @Deprecated example


Description:

The @Deprecated annotation will be used to inform the compiler to generate a warning whenever a program uses a method, class, or field with the @Deprecated annotation. It is good to document the reason with Javadoc @deprecated tag. Make a note of case difference with @Deprecated and @deprecated. @deprecated is for documentation purpose.


Code:
package com.java2novice.annotations;

public class MyDeprecatedExmp {
	
	/**
     * @deprecated
     * reason for why it was deprecated
     */
	@Deprecated
	public void showDeprecatedMessage(){
		System.out.println("This method is marked as deprecated");
	}
	
	public static void main(String a[]){
		
		MyDeprecatedExmp mde = new MyDeprecatedExmp();
		mde.showDeprecatedMessage();
	}
}

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Knowledge Centre
Can we call servlet destory() from service()?
As you know, destory() is part of servlet life cycle methods, it is used to kill the servlet instance. Servlet Engine is used to call destory(). In case, if you call destory method from service(), it just execute the code written in the destory(), but it wont kill the servlet instance. destroy() will be called before killing the servlet instance by servlet engine.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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