hacktoberfest Create ArrayList15

ArrayList15

@@ -0,0 +1,56 @@
+// Java program to convert ArrayList
+// to HashMap
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
+public class ArrayListExample {
+	public static void main(String[] args)
+	{
+
+		// ArrayList of string
+		ArrayList<String> languageList
+		= new ArrayList<>(Arrays.asList("Java", "C++", "Python",
+										"PHP", "NodeJS"));
+
+		System.out.println(
+			"-------------ArrayList---------------");
+
+
+		// printing the ArrayList
+		for (String language : languageList)
+		{
+		System.out.println(language);
+		}
+
+		System.out.println(
+			"--------------HashMap----------------");
+
+		// convertArrayListToHashMap() method directly
+		// converts ArrayList to Hashmap
+		HashMap<String, Integer> languageMap = convertArrayListToHashMap(languageList);
+
+		// printing the HashMap
+		for (Map.Entry<String, Integer> entry : languageMap.entrySet()) {
+
+			System.out.println(entry.getKey() + " : "
+							+ entry.getValue());
+		}
+	}
+
+	private static HashMap<String, Integer>
+	convertArrayListToHashMap(ArrayList<String> arrayList)
+	{
+
+		HashMap<String, Integer> hashMap = new HashMap<>();
+
+		for (String str : arrayList) {
+
+			hashMap.put(str, str.length());
+		}
+
+		return hashMap;
+	}
+}