package arraylistinjava; import java.util.ArrayList; public class ArrayListInJava { public static void main(String[] args) { //declaring the arraylist ArrayList arrayList=new ArrayList(); //adding value to the arraylist arrayList.add("Shakil"); arrayList.add("Jahid"); arrayList.add("Rashed"); arrayList.add("Sagor"); arrayList.add("Faisal"); arrayList.add("koushik"); arrayList.add("Shuvo"); System.out.println("Names are : "+arrayList+"\n"); //adding an another index at 0 System.out.println("Names in arraylist are:"+arrayList); arrayList.add(0,"Sakhawat Hossain"); System.out.println("After changing new names are : "+arrayList+"\n"); //removinf by indexing System.out.println("Names in arraylist are:"+arrayList); arrayList.remove(0); System.out.println("After removing in indexing new names are : "+arrayList+"\n"); //removing by an object arrayList.remove("Sagor"); System.out.println("Names in arraylist are:"+arrayList); System.out.println("After removing with object new names are :"+arrayList+"\n"); //updating arrayList.set(1,"Sakhawat Shakil"); System.out.println("Names in arraylist are:"+arrayList); System.out.println("Printing the updated arraylist : "+arrayList+"\n"); //getting index of an object //if the object doesnot appear in the arraylist then it will return -1 int length=arrayList.indexOf("Shakil"); System.out.println("Names in arraylist are:"+arrayList); System.out.println("The index of desire object is :"+length+"\n"); //getting an object by the help of index String string=arrayList.get(0); System.out.println("Names in arraylist are :"+arrayList); System.out.println("The desire object is :"+string+"\n"); //getting the arraylist size int sizeOfTheArray=arrayList.size(); System.out.println("Names in arraylist are :"+arrayList); System.out.println("The dsize of the arraylist is :"+sizeOfTheArray+"\n"); //confirming that a value is in the list or not //and if it appears in the arraylist it will return true else false System.out.println("Names in arraylist are:"+arrayList); System.out.println(""+arrayList.contains("Shakil")); System.out.println(""+arrayList.contains("Shaki")); //deleting or clearing all the elements in the arraylist System.out.println("Names in arraylist are:"+arrayList); arrayList.clear(); System.out.println("After clearing :"+arrayList); } }