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Java How to use List?

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SAMER SAEID answered on January 8, 2020 Popularity 10/10 Helpfulness 3/10

answer Java How to use List?

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Java How to use List?

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// ArrayList implementation of List
List<String> list1 = new ArrayList<>();

// LinkedList implementation of List
List<String> list2 = new LinkedList<>();

Popularity 10/10 Helpfulness 3/10 Language java

Source: Grepper

Tags: java

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Contributed on May 25 2022

SAMER SAEID

0 Answers Avg Quality 2/10

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how to create a list in java

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import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;

class scratch{
    public static void main(String[] args) {
        List<Integer> aList = new ArrayList<>();
        List<Integer> lList = new LinkedList<>();
    }
}

Popularity 10/10 Helpfulness 7/10 Language java

Source: Grepper

Tags: java

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Contributed on Jan 08 2020

Nitbit25

0 Answers Avg Quality 2/10

list java

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    import java.util.*;  
    public class ListExample1{  
    public static void main(String args[]){  
     //Creating a List  
     List<String> list=new ArrayList<String>();  
     //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);  
      
    }  
    }

Popularity 10/10 Helpfulness 5/10 Language java

Source: www.javatpoint.com

Tags: java

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Contributed on Nov 01 2022

Pratik Lonari

0 Answers Avg Quality 2/10

List<> in java

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import java.util.List;

public class ListExample {
    public static void main(String[] args) {
        // Creating a List of Strings
        List<String> myList = new ArrayList<>();

        // Adding elements to the list
        myList.add("Apple");
        myList.add("Banana");
        myList.add("Orange");

        // Accessing elements in the list
        String firstElement = myList.get(0);
        System.out.println("First element: " + firstElement);

        // Updating an element in the list
        myList.set(1, "Mango");

        // Removing an element from the list
        boolean removed = myList.remove("Orange");
        System.out.println("Element 'Orange' removed: " + removed);

        // Getting the size of the list
        int size = myList.size();
        System.out.println("Size of the list: " + size);

        // Iterating over the elements in the list
        for (String element : myList) {
            System.out.println(element);
        }
    }
}

Popularity 8/10 Helpfulness 3/10 Language java

Source: Grepper

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Contributed on Sep 12 2023

YOU.com

0 Answers Avg Quality 2/10

java list

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import java.util.*;
var list = new ArrayList<String>();
list.add("Hello World!");

Popularity 10/10 Helpfulness 3/10 Language java

Source: Grepper

Tags: java

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Contributed on Feb 05 2021

Merlin4 (ranken)

0 Answers Avg Quality 2/10

create list java

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import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        // Create a new list using ArrayList
        List<String> myList = new ArrayList<>();
        
        // Add elements to the list
        myList.add("First element");
        myList.add("Second element");
        myList.add("Third element");
        
        // Access and print elements of the list
        for (String element : myList) {
            System.out.println(element);
        }
    }
}

Popularity 9/10 Helpfulness 3/10 Language java

Source: Grepper

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Contributed on Sep 11 2023

YOU.com

0 Answers Avg Quality 2/10

Java List

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// Java Program to illustrate the
// addition of elements in a List
 
import java.util.*;
public class GFG {
 
    public static void main(String args[])
    {
 
        // Creating a List
        List<String> al = new ArrayList<>();
 
        // Adding elements in the List
        al.add("mango");
        al.add("orange");
        al.add("Grapes");
 
        // Iterating the List
        // element using for-each loop
        for (String fruit : al)
            System.out.println(fruit);
    }
}

Popularity 10/10 Helpfulness 3/10 Language java

Source: www.geeksforgeeks.org

Tags: java

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Contributed on Jun 25 2022

MrMike

0 Answers Avg Quality 2/10

java list

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import java.util.*;

public class CollectionExample {
    public static void main(String[] args) {
        // Set Example
        Set<String> setExample = new HashSet<>();
        setExample.add("Apple");
        setExample.add("Banana");
        setExample.add("Orange");

        // iterating through set
        Iterator<String> setIterator = setExample.iterator();
        while (setIterator.hasNext()) {
            System.out.println(setIterator.next());
        }
        // Alternative iteration
        for (String item : setExample) {
            System.out.println(item);
        }

        // List Example
        List<Integer> listExample = new ArrayList<>();
        listExample.add(10);
        listExample.add(20);
        listExample.add(30);

        // iterating through List
        Iterator<Integer> listIterator = listExample.iterator();
        while (listIterator.hasNext()) {
            System.out.println(listIterator.next());
        }
        // Alternative iteration
        for (Integer value : listExample) {
            System.out.println(value);
        }

        // Map Example
        Map<String, Integer> mapExample = new HashMap<>();
        mapExample.put("One", 1);
        mapExample.put("Two", 2);
        mapExample.put("Three", 3);

        // iterating through Map
        Iterator<Map.Entry<String, Integer>> mapIterator = mapExample.entrySet().iterator();
        while (mapIterator.hasNext()) {
            Map.Entry<String, Integer> entry = mapIterator.next();
            System.out.println(entry.getKey() + ": " + entry.getValue());
        }
        // Alternative iteration
        for (Map.Entry<String, Integer> entry : mapExample.entrySet()) {
            System.out.println(entry.getKey() + ": " + entry.getValue());
        }
    }
}

Popularity 10/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: java

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Contributed on Jan 01 2024

Innocent Iguana

0 Answers Avg Quality 2/10

list of list in java

Comment

// Java code to demonstrate the concept of
// list of lists using iterator
  
import java.util.*;
  
class List_of_list {
  
    // Iterate the 2D list using Iterator
    // and print each element
    public static <K> void
    iterateUsingIterator(List<List<K> > listOfLists)
    {
        // Iterator for the 2D list
        Iterator listOfListsIterator
            = listOfLists.iterator();
  
        System.out.println("[");
        while (listOfListsIterator.hasNext()) {
  
            // Type cast next() method
            // to convert from Object to List<K>
            List<K> list = new ArrayList<K>();
  
            list = (List<K>)listOfListsIterator.next();
  
            // Iterator for list
            Iterator eachListIterator
                = list.iterator();
  
            System.out.print("  [");
            while (eachListIterator.hasNext()) {
  
                System.out.print(
                    "  "
                    + eachListIterator.next()
                    + ", ");
            }
            System.out.println("], ");
        }
        System.out.println("]");
    }
  
    // Driver code
    public static void main(String[] args)
    {
  
        // List of Lists
        ArrayList<List<Integer> > listOfLists
            = new ArrayList<List<Integer> >();
  
        // Create N lists one by one
        // and append to the list of lists
        List<Integer> list1
            = new ArrayList<Integer>();
        list1.add(5);
        list1.add(10);
        listOfLists.add(list1);
  
        List<Integer> list2
            = new ArrayList<Integer>();
        list2.add(1);
        listOfLists.add(list2);
  
        List<Integer> list3
            = new ArrayList<Integer>();
        list3.add(20);
        list3.add(30);
        list3.add(40);
        listOfLists.add(list3);
  
        // Iterate the 2D list
        iterateUsingIterator(listOfLists);
    }
}

Popularity 10/10 Helpfulness 2/10 Language java

Source: www.geeksforgeeks.org

Tags: java

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Contributed on Apr 24 2022

Pankaj Kumar Prasad

0 Answers Avg Quality 2/10

Java How to use List?

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