Loop list java

Java loop through arraylist

ArrayList<String> namesList = new ArrayList<String>(Arrays.asList( "alex", "brian", "charles") );
         
for(String name : namesList)
{
    System.out.println(name);
}

Source: howtodoinjava.com

Java iterate over list

for (int i = 0; i < crunchifyList.size(); i++) {
            System.out.println(crunchifyList.get(i));
        }

Source: crunchify.com

Iterate through an arraylist java

// will iterate through each index of the array list
// using the size of the array list as the max.
// (the last index is the size of the array list - 1)

for (int i = 0; i < myArrayList.size(); i++) {
  
  System.out.println(myArrayList.get(i));
  // will print each index as it loops
}

Loop list java

package crunchify.com.tutorials;
 
import java.util.*;
 
/**
 * @author Crunchify.com
 * How to iterate through Java List? Seven (7) ways to Iterate Through Loop in Java.
 * 1. Simple For loop
 * 2. Enhanced For loop
 * 3. Iterator
 * 4. ListIterator
 * 5. While loop
 * 6. Iterable.forEach() util
 * 7. Stream.forEach() util
 */
 
public class CrunchifyIterateThroughList {
 
    public static void main(String[] argv) {
 
        // create list
        List<String> crunchifyList = new ArrayList<String>();
 
        // add 4 different values to list
        crunchifyList.add("Facebook");
        crunchifyList.add("Paypal");
        crunchifyList.add("Google");
        crunchifyList.add("Yahoo");
 
        // Other way to define list is - we will not use this list :)
        List<String> crunchifyListNew = Arrays.asList("Facebook", "Paypal", "Google", "Yahoo");
 
        // Simple For loop
        System.out.println("==============> 1. Simple For loop Example.");
        for (int i = 0; i < crunchifyList.size(); i++) {
            System.out.println(crunchifyList.get(i));
        }
 
        // New Enhanced For loop
        System.out.println("\n==============> 2. New Enhanced For loop Example..");
        for (String temp : crunchifyList) {
            System.out.println(temp);
        }
 
        // Iterator - Returns an iterator over the elements in this list in proper sequence.
        System.out.println("\n==============> 3. Iterator Example...");
        Iterator<String> crunchifyIterator = crunchifyList.iterator();
        while (crunchifyIterator.hasNext()) {
            System.out.println(crunchifyIterator.next());
        }
 
        // ListIterator - traverse a list of elements in either forward or backward order
        // An iterator for lists that allows the programmer to traverse the list in either direction, modify the list during iteration,
        // and obtain the iterator's current position in the list.
        System.out.println("\n==============> 4. ListIterator Example...");
        ListIterator<String> crunchifyListIterator = crunchifyList.listIterator();
        while (crunchifyListIterator.hasNext()) {
            System.out.println(crunchifyListIterator.next());
        }
 
        // while loop
        System.out.println("\n==============> 5. While Loop Example....");
        int i = 0;
        while (i < crunchifyList.size()) {
            System.out.println(crunchifyList.get(i));
            i++;
        }
 
        // Iterable.forEach() util: Returns a sequential Stream with this collection as its source
        System.out.println("\n==============> 6. Iterable.forEach() Example....");
        crunchifyList.forEach((temp) -> {
            System.out.println(temp);
        });
 
        // collection Stream.forEach() util: Returns a sequential Stream with this collection as its source
        System.out.println("\n==============> 7. Stream.forEach() Example....");
        crunchifyList.stream().forEach((crunchifyTemp) -> System.out.println(crunchifyTemp));
    }
}

Source: crunchify.com

Similar codes

7 votes175 views3 answers
Java wait 2 seconds
Java
1 vote191 views2 answers
Java compare char
Java
1 vote171 views1 answer
Lambda function java
Java
0 vote163 views3 answers
Cant change button color when app run android studio
Java
1 vote188 views1 answer
Wat is voorbereiden voltooid deelwoord
Java
1 vote192 views1 answer
System.IO.IOException: 'The process cannot access the file 'C:\Users\cyberlink\Desktop\m\src\App.java' because it is being used by another process.'
Java
0 vote219 views2 answers
Single line comment in java
Java
0 vote177 views1 answer
You may test the newly compiled and packaged JAR in maven
Java
7 votes176 views2 answers
Sum numbers in array java
Java
2 votes172 views1 answer
Android back navigation
Java