Online Java Compiler By
JavaTpoint.com
import java.util.*; public class CollectionsSynchronizedCollectionExample3 { public static void main(String[] args) { Collection<String> obj = new ArrayList<>(); obj.add("JavaTpoint"); // not thread safe Collection<String> synObj = Collections.synchronizedCollection(obj); synObj.add("SSSIT"); // thread safe //Below iteration will result in non-deterministic behavior Iterator<String> ite1 = synObj.iterator(); while (ite1.hasNext()) { String s = ite1.next(); System.out.println(s); } //Below code is the right way to iterate synchronized collection synchronized(synObj) { Iterator<String> ite2 = synObj.iterator(); while (ite2.hasNext()) { String s = ite2.next(); System.out.println(s); } } } }
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