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Java Collections synchronizedSortedMap() Method

The Java Collections synchronizedSortedMap() method is used to return a synchronized sorted (thread-safe) map backed by the specified sorted map.

Following is the declaration for java.util.Collections.synchronizedSortedMap() method.

public static <K,V> SortedMap<K,V> synchronizedSortedMap(SortedMap<K,V> m)

m − This is the sorted map to be "wrapped" in a synchronized sorted map.

• The method call returns a synchronized sorted view of the specified sorted map.

NA

The following example shows the usage of Java Collection synchronizedSortedMap(SortedMap) method. We've created a SortedMap object of String and Integer. Few entries are added and then using synchronizedSortedMap(SortedMap) method, we've retrieved the synchronized sorted version of sorted map and printed the map.

package com.tutorialspoint;

import java.util.Collections;
import java.util.TreeMap;
import java.util.SortedMap;

public class CollectionsDemo {
   public static void main(String[] args) {
      
      // create map
      SortedMap<String,Integer> map = new TreeMap<String,Integer>();

      // populate the map
      map.put("1",1); 
      map.put("2",2);
      map.put("3",3);

      // create a synchronized sorted map
      SortedMap<String,Integer> synmap = Collections.synchronizedSortedMap(map);

      System.out.println("Synchronized Sorted map is :"+synmap);
   }
}

Let us compile and run the above program, this will produce the following result.

Synchronized Sorted map is :{1=1, 2=2, 3=3}

The following example shows the usage of Java Collection synchronizedSortedMap(SortedMap) method. We've created a SortedMap object of String and String. Few entries are added and then using synchronizedSortedMap(SortedMap) method, we've retrieved the synchronized sorted version of sorted map and printed the map.

package com.tutorialspoint;

import java.util.Collections;
import java.util.TreeMap;
import java.util.SortedMap;

public class CollectionsDemo {
   public static void main(String[] args) {
      
      // create map
      SortedMap<String,String> map = new TreeMap<String,String>();

      // populate the map
      map.put("1","TP"); 
      map.put("2","IS");
      map.put("3","BEST");

      // create a synchronized sorted map
      SortedMap<String,String> synmap = Collections.synchronizedSortedMap(map);

      System.out.println("Synchronized Sorted map is :"+synmap);
   }
}

Let us compile and run the above program, this will produce the following result.

Synchronized Sorted map is :{1=TP, 2=IS, 3=BEST}

The following example shows the usage of Java Collection synchronizedSortedMap(SortedMap) method. We've created a SortedMap object of String and Student object. Few entries are added and then using synchronizedSortedMap(SortedMap) method, we've retrieved the synchronized sorted version of sorted map and printed the map.

package com.tutorialspoint;

import java.util.Collections;
import java.util.TreeMap;
import java.util.SortedMap;

public class CollectionsDemo {
   public static void main(String[] args) {
      
      // create map
      SortedMap<String,Student> map = new TreeMap<String,Student>();

      // populate the map
      map.put("1",new Student(1, "Julie")); 
      map.put("2",new Student(2, "Robert"));
      map.put("3",new Student(3, "Adam"));

      // create a synchronized sorted map
      SortedMap<String,Student> synmap = Collections.synchronizedSortedMap(map);

      System.out.println("Synchronized Sorted map is :"+synmap);
   }
}
class Student {
   int rollNo;
   String name;

   Student(int rollNo, String name){
      this.rollNo = rollNo;
      this.name = name;
   }

   @Override
   public String toString() {
      return "[ " + this.rollNo + ", " + this.name + " ]";
   }
}

Let us compile and run the above program, this will produce the following result.

Synchronized Sorted map is :{1=[ 1, Julie ], 2=[ 2, Robert ], 3=[ 3, Adam ]}

java_util_collections.htm

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