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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What is race condition?
A race condition is a situation in which two or more threads or processes are reading or writing some shared data, and the final result depends on the timing of how the threads are scheduled. Race conditions can lead to unpredictable results and subtle program bugs. A thread can prevent this from happening by locking an object. When an object is locked by one thread and another thread tries to call a synchronized method on the same object, the second thread will block until the object is unlocked.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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