Common property of Vector and ArrayList in Java
1) Bother Vector and ArrayList are derived from AbstractList and implements List interface, which means both of them are ordered collection and allows duplicates.
2) Another similarity between Vector vs ArrayList is that both are index based Collection and you can use get(index) method to retrieve objects from Vector and ArrayList.
Vector vs ArrayList in Java
1) First and most common difference between Vector vs ArrayList is that Vector is synchronized and thread-safe while ArrayList is neither Synchronized nor thread-safe. Now, What does that mean? It means if multiple thread try to access Vector same time they can do that without compromising Vector's internal state. Same is not true in case of ArrayList as methods like add(), remove() or get() is not synchronized.
2) Second major difference on Vector vs ArrayList is Speed, which is directly related to previous difference. Since Vector is synchronized, its slow and ArrayList is not synchronized its faster than Vector.
3) Third difference on Vector vs ArrayList is that Vector is a legacy class and initially it was not part of Java Collection Framework. From Java 1.4 Vector was retrofitted to implement List interface and become part of Collection Framework.
1) Bother Vector and ArrayList are derived from AbstractList and implements List interface, which means both of them are ordered collection and allows duplicates.
2) Another similarity between Vector vs ArrayList is that both are index based Collection and you can use get(index) method to retrieve objects from Vector and ArrayList.
Vector vs ArrayList in Java
1) First and most common difference between Vector vs ArrayList is that Vector is synchronized and thread-safe while ArrayList is neither Synchronized nor thread-safe. Now, What does that mean? It means if multiple thread try to access Vector same time they can do that without compromising Vector's internal state. Same is not true in case of ArrayList as methods like add(), remove() or get() is not synchronized.
2) Second major difference on Vector vs ArrayList is Speed, which is directly related to previous difference. Since Vector is synchronized, its slow and ArrayList is not synchronized its faster than Vector.
3) Third difference on Vector vs ArrayList is that Vector is a legacy class and initially it was not part of Java Collection Framework. From Java 1.4 Vector was retrofitted to implement List interface and become part of Collection Framework.
