public interface List extends Collection

//Creating a List of type String using ArrayList
List list=new ArrayList();

//Creating a List of type Integer using ArrayList
List list=new ArrayList();

//Creating a List of type Book using ArrayList
List list=new ArrayList();

//Creating a List of type String using LinkedList
List list=new LinkedList();

import java.util.*;
public class ListExample1{
public static void main(String args[]){
 //Creating a List
 List list=new ArrayList();
 //Adding elements in the List
 list.add("Mango");
 list.add("Apple");
 list.add("Banana");
 list.add("Grapes");
 //Iterating the List element using for-each loop
 for(String fruit:list)
  System.out.println(fruit);

}
}

Mango
Apple
Banana
Grapes

import java.util.*;
public class ArrayToListExample{
public static void main(String args[]){
//Creating Array
String[] array={"Java","Python","PHP","C++"};
System.out.println("Printing Array: "+Arrays.toString(array));
//Converting Array to List
List list=new ArrayList();
for(String lang:array){
list.add(lang);
}
System.out.println("Printing List: "+list);

}
}

Printing Array: [Java, Python, PHP, C++]
Printing List: [Java, Python, PHP, C++]

import java.util.*;
public class ListToArrayExample{
public static void main(String args[]){
 List fruitList = new ArrayList<>();  
 fruitList.add("Mango");  
 fruitList.add("Banana");  
 fruitList.add("Apple");  
 fruitList.add("Strawberry");  
 //Converting ArrayList to Array
 String[] array = fruitList.toArray(new String[fruitList.size()]);  
 System.out.println("Printing Array: "+Arrays.toString(array));
 System.out.println("Printing List: "+fruitList);
}
}

Printing Array: [Mango, Banana, Apple, Strawberry]
Printing List: [Mango, Banana, Apple, Strawberry]

import java.util.*;
public class ListExample2{
 public static void main(String args[]){
 //Creating a List
 List list=new ArrayList();
 //Adding elements in the List
 list.add("Mango");
 list.add("Apple");
 list.add("Banana");
 list.add("Grapes");
 //accessing the element  
 System.out.println("Returning element: "+list.get(1));//it will return the 2nd element, because index starts from 0
 //changing the element
 list.set(1,"Dates");
 //Iterating the List element using for-each loop
 for(String fruit:list)
  System.out.println(fruit);

 }
}

Returning element: Apple
Mango
Dates
Banana
Grapes

import java.util.*;
class SortArrayList{
 public static void main(String args[]){
  //Creating a list of fruits
  List list1=new ArrayList();
  list1.add("Mango");
  list1.add("Apple");
  list1.add("Banana");
  list1.add("Grapes");
  //Sorting the list
  Collections.sort(list1);
   //Traversing list through the for-each loop
  for(String fruit:list1)
    System.out.println(fruit);
    
 System.out.println("Sorting numbers...");
  //Creating a list of numbers
  List list2=new ArrayList();
  list2.add(21);
  list2.add(11);
  list2.add(51);
  list2.add(1);
  //Sorting the list
  Collections.sort(list2);
   //Traversing list through the for-each loop
  for(Integer number:list2)
    System.out.println(number);
 }
 
}

Apple
Banana
Grapes
Mango
Sorting numbers...
1
11
21
51

public interface ListIterator extends Iterator

import java.util.*;
public class ListIteratorExample1{
public static void main(String args[]){
List al=new ArrayList();  
al.add("Amit");  
al.add("Vijay");  
al.add("Kumar");  
al.add(1,"Sachin");  
ListIterator itr=al.listIterator();  
System.out.println("Traversing elements in forward direction");  
while(itr.hasNext()){  

System.out.println("index:"+itr.nextIndex()+" value:"+itr.next());  
}  
System.out.println("Traversing elements in backward direction");  
while(itr.hasPrevious()){  

System.out.println("index:"+itr.previousIndex()+" value:"+itr.previous());  
}  
}
}

Traversing elements in forward direction
index:0 value:Amit
index:1 value:Sachin
index:2 value:Vijay
index:3 value:Kumar
Traversing elements in backward direction
index:3 value:Kumar
index:2 value:Vijay
index:1 value:Sachin
index:0 value:Amit

import java.util.*;
class Book {
int id;
String name,author,publisher;
int quantity;
public Book(int id, String name, String author, String publisher, int quantity) {
this.id = id;
this.name = name;
this.author = author;
this.publisher = publisher;
this.quantity = quantity;
}
}
public class ListExample5 {
public static void main(String[] args) {
//Creating list of Books
List list=new ArrayList();
//Creating Books
Book b1=new Book(101,"Let us C","Yashwant Kanetkar","BPB",8);
Book b2=new Book(102,"Data Communications and Networking","Forouzan","Mc Graw Hill",4);
Book b3=new Book(103,"Operating System","Galvin","Wiley",6);
//Adding Books to list
list.add(b1);
list.add(b2);
list.add(b3);
//Traversing list
for(Book b:list){
System.out.println(b.id+" "+b.name+" "+b.author+" "+b.publisher+" "+b.quantity);
}
}
}

101 Let us C Yashwant Kanetkar BPB 8
102 Data Communications and Networking Forouzan Mc Graw Hill 4
103 Operating System Galvin Wiley 6