Question

How to synchronized Map from TreeMap in Java

Answer 1

package javaapplication1;

import java.util.Collections;
import java.util.Map;
import java.util.TreeMap;

public class JavaApplication1 {

    public static void main(String[] args) {
     
        TreeMap treeMap = new TreeMap();
         
        treeMap.put("1", "Java");
        treeMap.put("2", "C");
        treeMap.put("3", "C++");
        treeMap.put("4", "C#");
        treeMap.put("5", "PHP");
        treeMap.put("6", "JavaScript");
        treeMap.put("7", "Python");
        
        Map map = Collections.synchronizedMap(treeMap);
        
        System.out.println(map);
  }
}
 
/*

run:

{1=Java, 2=C, 3=C++, 4=C#, 5=PHP, 6=JavaScript, 7=Python}

*/

 

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