In the earlier post we have discus linkedlist in java , I Assuming you have gone through linkedlist in java and know about how to create linkedlist in java .In this tutorial we will discuss different ways of iterating linkedlist in java as following
- For loop
- Enhanced for loop
- While loop
- Iterator
Let’s try code for these method of iterating linkedlist in java
import java.util.Iterator;
import java.util.LinkedList;
public class LinklistIterator {
public static void main(String[] args) {
/*
* Constructs an empty list.
*/
LinkedList<String> linkedList = new LinkedList<String>();
//adding element in linkedlist
linkedList.add("PHP");
linkedList.add("JAVA");
linkedList.add("C++");
linkedList.add("Android");
System.out.println("===>> Iterate Linkedlist using for loop");
//for loop
for (int i = 0; i < linkedList.size() -1 ; i++) {
System.out.println("element is ="+ linkedList.get(i));
}
System.out.println("===>> Iterate Linkedlist using Enhanced for loop");
//Enhanced for loop
for(String element : linkedList){
System.out.println("element is ="+ element);
}
System.out.println("===>>Iterate Linkedlist using while loop");
//While loop
int i = 0;
while (i < linkedList.size() -1 ) {
System.out.println("element is ="+ linkedList.get(i));
i++;
}
System.out.println("===>> Iterate Linkedlist using Iterator");
//Iterator
Iterator<String> itr = linkedList.iterator();
while (itr.hasNext()) {
System.out.println("element is =" + itr.next());
}
}
}Output :
===>> Iterate Linkedlist using for loop
element is =PHP
element is =JAVA
element is =C++
===>> Iterate Linkedlist using Enhanced for loop
element is =PHP
element is =JAVA
element is =C++
element is =Android
===>>Iterate Linkedlist using while loop
element is =PHP
element is =JAVA
element is =C++
===>> Iterate Linkedlist using Iterator
element is =PHP
element is =JAVA
element is =C++
element is =Android