In this tutorial, we will learn about the Vector class and how to use it. We will also learn how it is different from the ArrayList class, and why we should use array lists instead.<\/p>\n\n\n\n
The\u00a0 In Java, both The It is because when one thread is accessing a vector, and at the same time another thread tries to access it, an exception called However, in array lists, methods are not synchronized. Instead, it uses the Note:<\/strong> It is recommended to use Here is how we can create vectors in Java.<\/p>\n\n\n\n Here, Type<\/var> indicates the type of a linked list. For example,<\/p>\n\n\n\n The For example,<\/p>\n\n\n\n Output<\/strong><\/p>\n\n\n\n For example,<\/p>\n\n\n\n Output<\/strong><\/p>\n\n\n\n For example,<\/p>\n\n\n\n Output<\/strong><\/p>\n\n\n\n In this tutorial, we will learn about the Vector class and how to use it. We will also learn how it is different from the ArrayList class, and why we should use array lists instead. The\u00a0Vector\u00a0class is an implementation of the\u00a0List\u00a0interface that allows us to create resizable-arrays similar to the\u00a0ArrayList\u00a0class. Java Vector vs. ArrayList In […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[584],"tags":[],"_links":{"self":[{"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/posts\/1257"}],"collection":[{"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/comments?post=1257"}],"version-history":[{"count":0,"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/posts\/1257\/revisions"}],"wp:attachment":[{"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/media?parent=1257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/categories?post=1257"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mudassirbackup.infinitycodestudio.com\/index.php\/wp-json\/wp\/v2\/tags?post=1257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Vector<\/code>\u00a0class is an implementation of the\u00a0List<\/code>\u00a0interface that allows us to create resizable-arrays similar to the\u00a0ArrayList\u00a0class.<\/p>\n\n\n\n
\n\n\n\nJava Vector vs. ArrayList<\/h2>\n\n\n\n
ArrayList<\/code> and Vector<\/code> implements the List<\/code> interface and provides the same functionalities. However, there exist some differences between them.<\/p>\n\n\n\nVector<\/code> class synchronizes each individual operation. This means whenever we want to perform some operation on vectors, the Vector<\/code> class automatically applies a lock to that operation.<\/p>\n\n\n\nConcurrentModificationException<\/code> is generated. Hence, this continuous use of lock for each operation makes vectors less efficient.<\/p>\n\n\n\nCollections.synchronizedList()<\/code> method that synchronizes the list as a whole.<\/p>\n\n\n\nArrayList<\/code> in place of Vector<\/code> because vectors less efficient.<\/p>\n\n\n\n
\n\n\n\nCreating a Vector<\/h2>\n\n\n\n
Vector<Type> vector = new Vector<>();\n<\/code><\/pre>\n\n\n\n\/\/ create Integer type linked list\nVector<Integer> vector= new Vector<>();\n\n\/\/ create String type linked list\nVector<String> vector= new Vector<>();\n<\/code><\/pre>\n\n\n\n
\n\n\n\nMethods of Vector<\/h2>\n\n\n\n
Vector<\/code> class also provides the resizable-array implementations of the List<\/code> interface (similar to the ArrayList<\/code> class). Some of the Vector<\/code> methods are:<\/p>\n\n\n\n
\n\n\n\nAdd Elements to Vector<\/h2>\n\n\n\n
add(element)<\/code> – adds an element to vectors<\/li>add(index, element)<\/code> – adds an element to the specified position<\/li>addAll(vector)<\/code> – adds all elements of a vector to another vector<\/li><\/ul>\n\n\n\nimport java.util.Vector;\n\nclass Main {\n public static void main(String[] args) {\n Vector<String> mammals= new Vector<>();\n\n \/\/ Using the add() method\n mammals.add(\"Dog\");\n mammals.add(\"Horse\");\n\n \/\/ Using index number\n mammals.add(2, \"Cat\");\n System.out.println(\"Vector: \" + mammals);\n\n \/\/ Using addAll()\n Vector<String> animals = new Vector<>();\n animals.add(\"Crocodile\");\n\n animals.addAll(mammals);\n System.out.println(\"New Vector: \" + animals);\n }\n}\n<\/code><\/pre>\n\n\n\nVector: [Dog, Horse, Cat]\nNew Vector: [Crocodile, Dog, Horse, Cat]\n<\/samp><\/code><\/pre>\n\n\n\n
\n\n\n\nAccess Vector Elements<\/h2>\n\n\n\n
get(index)<\/code> – returns an element specified by the index<\/li>iterator()<\/code> – returns an iterator object to sequentially access vector elements<\/li><\/ul>\n\n\n\nimport java.util.Iterator;\nimport java.util.Vector;\n\nclass Main {\n public static void main(String[] args) {\n Vector<String> animals= new Vector<>();\n animals.add(\"Dog\");\n animals.add(\"Horse\");\n animals.add(\"Cat\");\n\n \/\/ Using get()\n String element = animals.get(2);\n System.out.println(\"Element at index 2: \" + element);\n\n \/\/ Using iterator()\n Iterator<String> iterate = animals.iterator();\n System.out.print(\"Vector: \");\n while(iterate.hasNext()) {\n System.out.print(iterate.next());\n System.out.print(\", \");\n }\n }\n}\n<\/code><\/pre>\n\n\n\nElement at index 2: Cat\nVector: Dog, Horse, Cat,\n<\/samp><\/code><\/pre>\n\n\n\n
\n\n\n\nRemove Vector Elements<\/h2>\n\n\n\n
remove(index)<\/code> – removes an element from specified position<\/li>removeAll()<\/code> – removes all the elements<\/li>clear()<\/code> – removes all elements. It is more efficient than removeAll()<\/code><\/li><\/ul>\n\n\n\nimport java.util.Vector;\n\nclass Main {\n public static void main(String[] args) {\n Vector<String> animals= new Vector<>();\n animals.add(\"Dog\");\n animals.add(\"Horse\");\n animals.add(\"Cat\");\n\n System.out.println(\"Initial Vector: \" + animals);\n\n \/\/ Using remove()\n String element = animals.remove(1);\n System.out.println(\"Removed Element: \" + element);\n System.out.println(\"New Vector: \" + animals);\n\n \/\/ Using clear()\n animals.clear();\n System.out.println(\"Vector after clear(): \" + animals);\n }\n}\n<\/code><\/pre>\n\n\n\nInitial Vector: [Dog, Horse, Cat]\nRemoved Element: Horse\nNew Vector: [Dog, Cat]\nVector after clear(): []\n<\/samp><\/code><\/pre>\n\n\n\n
\n\n\n\nOthers Vector Methods<\/h2>\n\n\n\n
Methods<\/th> Descriptions<\/th><\/tr> set()<\/code><\/td>changes an element of the vector<\/td><\/tr> size()<\/code><\/td>returns the size of the vector<\/td><\/tr> toArray()<\/code><\/td>converts the vector into an array<\/td><\/tr> toString()<\/code><\/td>converts the vector into a String<\/td><\/tr> contains()<\/code><\/td>searches the vector for specified element and returns a boolean result<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"