how to create synchronized list in java?

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The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends.

Collections.synchronizedList() method will returns a synchronized (thread-safe) list backed by the specified list. In order to guarantee serial access, it is critical that all access to the backing list is accomplished through the returned list.
Syntax :public static List synchronizedList(List list)

Example

package com.w3schools;
 
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
 
public class Test { 
    public static void main(String a[]){         
        List<String> list = new ArrayList<String>();
        List<String> synList = Collections.synchronizedList(list);
        System.out.println("Synchronized list got created");
    }
}

Output

Synchronized list got created

Java Collections class examples