Programming Languages: [Java, JavaScript, Python] ArrayList after clear(): [] In the above example, we have created a arraylist namedlanguages. The arraylist stores the name of programming languages. Here, we have used theclear()method to remove all the elements oflanguages. ArrayList clear() ...
ArrayList: [java, javascript, swift, python] Updated ArrayList: [JAVA, JAVASCRIPT, SWIFT, PYTHON] In the above example, we have created an arraylist named languages. Notice the line, languages.replaceAll(e -> e.toUpperCase()); Here, e -> e.toUpperCase()is a lambda expression. It converts...
packagecom.programiz.arraylist;importjava.util.ArrayList;importjava.util.Iterator;publicclassIteratorMethod{publicstaticvoidmain(String[] args){ ArrayList<String> animals =newArrayList<>();// Add elements in the array listanimals.add("Dog"); animals.add("Cat"); animals.add("Horse"); animals.add...
ArrayList: [Java, Python, JavaScript] Size of ArrayList: 3 In the above example, we have created two arraylists namedlanguages. The arraylist contains 3 elements. Notice the line, languages.trimToSize(); Here, thetrimToSize()method sets the capacity of arraylist equal to the number of elements...
ArrayList 1: [Java, Python] ArrayList 2: [JavaScript, C] Updated ArrayList 2: [JavaScript, Java, Python, C] In the above example, we have two arraylists namedlanguages1andlanguages2. Notice the line, languages2.addAll(1, languages1); ...
ArrayList: [JavaScript, Java, Python, C] SubList: [Java, Python] In the above example, we have used thesubList()method to get elements from index 1 to 3 (excluding 3). Note: If you want to know how to get the index of the specified element, visitJava ArrayList indexOf(). ...
ArrayList: [JavaScript, Java, Python] ArrayList after remove(): [JavaScript, Java] Removed Element: Python In the above example, we have created an arraylist namedlanguages. Notice the expression, languages.remove(2) Here, theremove()returns and removes the element present at position2(i.e.Pyt...
However, this is not commonly used in Java. Instead, we combine theArrayList subList()andArrayList clear()methods. Example 2: Remove Multiple Elements importjava.util.ArrayList;classMain{publicstaticvoidmain(String[] args){// create an ArrayListArrayList<Integer> numbers =newArrayList<>();// add...
The size() method returns the number of elements present in the arraylist. Example import java.util.ArrayList; class Main { public static void main(String[] args) { // create an ArrayList ArrayList<Integer> primeNumbers = new ArrayList<>(); primeNumbers.add(2); primeNumbers.add(3); ...
Example 2: Remove Countries With "land" in Name import java.util.ArrayList; class Main { public static void main(String[] args) { // create an ArrayList ArrayList<String> countries = new ArrayList<>(); // add elements to the ArrayList countries.add("Iceland"); countries.add("America")...