toArray()<\/code> method to convert List to array.<\/p>\npackage org.arpit.java2blog;\n\nimport java.util.ArrayList;\nimport java.util.List;\n\npublic class ListToArrayJava8Main {\n public static void main(String[] args) {\n \/\/creation of list of type String\n List<String> list=new ArrayList<>();\n list.add(\"John\");\n list.add(\"Martin\");\n list.add(\"Mary\");\n list.add(\"Andrew\");\n \/\/print content of list\n System.out.println(\"Elements of list are:\");\n System.out.println(list);\n\n String[] arr=list.stream().toArray(String[]::new);\n\n System.out.println(\"Elements of Array are:\");\n for(int i=0; i < arr.length; i++) \n {\n \/\/printing element of array\n System.out.println(arr[i]);\n }\n }\n}\n<\/pre>\nOutput:<\/strong><\/p>\nElements of list are:
\n[John, Martin, Mary, Andrew]\nElements of Array are:
\nJohn
\nMartin
\nMary
\nAndrew<\/div>\n
Using Arrays.copyOf<\/span><\/span><\/h2>\nWe can use Arrays.copyOf()<\/code> method also to convert List to Array. We need to use toArray()<\/code> method and pass it to Arrays.copyOf()<\/code> method to convert it to specified type<\/p>\npackage org.arpit.java2blog;\n\nimport java.util.ArrayList;\nimport java.util.Arrays;\nimport java.util.List;\n\npublic class ListToArrayCopyOfMain {\n public static void main(String[] args) {\n \/\/creation of list of type String\n List<String> list=new ArrayList<>();\n list.add(\"John\");\n list.add(\"Martin\");\n list.add(\"Mary\");\n list.add(\"Andrew\");\n \/\/print content of list\n System.out.println(\"Elements of list are:\");\n System.out.println(list);\n\n String[] arr=Arrays.copyOf(list.toArray(),list.size(),String[].class);\n\n System.out.println(\"Elements of Array are:\");\n for(int i=0; i < arr.length; i++) \n {\n \/\/printing element of array\n System.out.println(arr[i]);\n }\n }\n}\n<\/pre>\nOutput:<\/strong><\/p>\nElements of list are:
\n[John, Martin, Mary, Andrew]\nElements of Array are:
\nJohn
\nMartin
\nMary
\nAndrew<\/div>\n
Using System.arraycopy<\/span><\/span><\/h2>\nWe can use System.arraycopy()<\/code> method which copies an specified array, starting at the specified position, to the specified position of the target array.<\/p>\npackage org.arpit.java2blog;\n\nimport java.util.ArrayList;\nimport java.util.List;\n\npublic class ListToArrayArrayCopyMain {\n public static void main(String[] args) {\n \/\/creation of list of type String\n List<String> list=new ArrayList<>();\n list.add(\"India\");\n list.add(\"China\");\n list.add(\"Nepal\");\n list.add(\"Bhutan\");\n \/\/print content of list\n System.out.println(\"Elements of list are:\");\n System.out.println(list);\n \/\/create an String array of size of list\n \/\/list.size() to know size of list\n String[] arr=new String[list.size()];\n System.arraycopy(list.toArray(), 0, arr, 0, list.size());\n\n System.out.println(\"Elements of Array are:\");\n for(int i=0; i < arr.length; i++) \n {\n \/\/printing element of array\n System.out.println(arr[i]);\n }\n }\n}\n<\/pre>\nOutput:<\/strong><\/p>\nElements of list are:
\n[India, China, Nepal, Bhutan]\nElements of Array are:
\nIndia
\nChina
\nNepal
\nBhutan<\/div>\n
Manual method<\/strong><\/span><\/span><\/h2>\nThis method use loop and run it until the size of list and one by one get elements from list and add it to Array.<\/p>\n
Example:<\/strong><\/p>\npackage org.arpit.java2blog;\n\nimport java.util.List;\nimport java.util.ArrayList;\npublic class ListToArrayManualMain\n{\n public static void main(String arg[])\n {\n \/\/create and initialization of list\n List<Integer> list=new ArrayList<>();\n list.add(800);\n list.add(600);\n list.add(400);\n list.add(200);\n \/\/print content of list\n System.out.print(\"Elements of list are:\");\n System.out.println(list);\n \/\/create an integer array of size of list\n \/\/list.size() to know size of list\n int[] ar=new int[list.size()];\n System.out.println(\"Elements of Array are:\");\n \/\/assigning of element of list one by one to array ar\n for(int i=0; i < list.size(); i++)\n {\n ar[i]=list.get(i);\n \/\/printing element of array\n System.out.println(ar[i]);\n }\n }\n}\n<\/pre>\nOUTPUT:<\/strong><\/p>\nElements of list are:[800, 600, 400, 200]\nElements of Array are:
\n800
\n600
\n400
\n200<\/div>\n
That’s all about converting List to Array in java.<\/p>\n","protected":false},"excerpt":{"rendered":"
Table of ContentsUsing toArray() methodUsing Java 8’s StreamUsing Arrays.copyOfUsing System.arraycopyManual method In this post, we will see how to convert List to Array in java. There are many ways to convert List to Array in java Using toArray() method We can use toArray() method to convert List to String. We can either pass a array […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_mi_skip_tracking":false},"categories":[183,217],"tags":[],"_links":{"self":[{"href":"https:\/\/java2blog.com\/wp-json\/wp\/v2\/posts\/4545"}],"collection":[{"href":"https:\/\/java2blog.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/java2blog.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/java2blog.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/java2blog.com\/wp-json\/wp\/v2\/comments?post=4545"}],"version-history":[{"count":0,"href":"https:\/\/java2blog.com\/wp-json\/wp\/v2\/posts\/4545\/revisions"}],"wp:attachment":[{"href":"https:\/\/java2blog.com\/wp-json\/wp\/v2\/media?parent=4545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/java2blog.com\/wp-json\/wp\/v2\/categories?post=4545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/java2blog.com\/wp-json\/wp\/v2\/tags?post=4545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}