JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: How to create synchronized map?


Description:

The Map is not synchornized (not thread-safe). Collections.synchronizedMap() method returns a synchronized (thread-safe) map backed by the specified map. In order to guarantee serial access, it is critical that all access to the backing map is accomplished through the returned map.


Code:
package com.java2novice.collections;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

public class MySyncMap {

	public static void main(String a[]){
		
		Map<String,String> mp = new HashMap<String,String>();
		Map<String,String> sysMapt = Collections.synchronizedMap(mp);
		System.out.println("Synchronized map got created...");
	}
}

Output:
Synchronized map got created...
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  15. How to convert Enumeration to List object?
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  18. How to get max element from the given list?
  19. How to get min element from the given list?
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  22. How to get max element of a list of user defined objects using Comparator?
  23. How to get min element of a list of user defined objects using Comparator?
  24. How to create multiple copies of a given object?
  25. How to replace all occurances of a given object in the list?
  26. How to rotate elements in the list by specified distance?
  27. How to create synchronized list?
  28. How to create synchronized set?
  29. How to create synchronized map?
Knowledge Centre
Purpose of garbage collection
The garbage collection process is to identify the objects which are no longer referenced or needed by a program so that their resources can be reclaimed and reused. These identified objects will be discarded.
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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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