JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Built-in Java Annotations: @SuppressWarnings example


Description:

Incase if you don't want to get any warnings from compiler for the known things, then you can use @SuppressWarnings annotation. For example, you are calling deprecated method, and you know that it is deprecated, to avoid compiler warnings, user @SuppressWarnings annotation.


Code:
package com.java2novice.annotations;

public class MyDeprecatedExmp {
	
	@Deprecated
	public void showDeprecatedMessage(){
		System.out.println("This method is marked as deprecated");
	}
	
	@SuppressWarnings("deprecation")
	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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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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