#Linked List help
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To fix the error "The type LinkedList is not generic; it cannot be parameterized with arguments <String>," you need to import the correct LinkedList class from the java.util package. Here's an example code that demonstrates how to use a generic LinkedList with String elements:
import java.util.LinkedList;
public class Main {
public static void main(String[] args) {
LinkedList<String> linkedList = new LinkedList<>();
// Adding elements to the linked list
linkedList.add("Apple");
linkedList.add("Banana");
linkedList.add("Orange");
// Displaying the elements of the linked list
System.out.println("Linked List: " + linkedList);
// Adding an element at a specific position
linkedList.add(1, "Mango");
// Displaying the modified linked list
System.out.println("Modified Linked List: " + linkedList);
// Removing an element from the linked list
String removedElement = linkedList.remove(2);
// Displaying the removed element and updated linked list
System.out.println("Removed Element: " + removedElement);
System.out.println("Updated Linked List: " + linkedList);
}
}
Output:
Linked List: [Apple, Banana, Orange]
Modified Linked List: [Apple, Mango, Banana, Orange]
Removed Element: Banana
Updated Linked List: [Apple, Mango, Orange]
In this example, we import java.util.LinkedList to use a generic LinkedList that can store String elements. We create a new instance of LinkedList<String> and perform various operations like adding elements at specific positions and removing elements. Finally, we display the modified and updated Linked List.
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To fix this problem, you need to use the generic version of LinkedList by specifying the type parameter when declaring the LinkedList object. In this case, you want to use LinkedList<String>, so you need to declare it as follows:
LinkedList<String> linkedList = new LinkedList<String>();
By doing this, you are creating a LinkedList object that can only store String elements.
To fix the problem, you need to change the type of LinkedList to LinkedList<String>. Here's an example of how you can modify your code:
import java.util.LinkedList;
public class Main {
public static void main(String[] args) {
LinkedList<String> linkedList = new LinkedList<>();
linkedList.add("Hello");
linkedList.add("World");
for (String str : linkedList) {
System.out.println(str);
}
}
}
In this modified code, LinkedList<String> specifies that the linkedList variable is of type LinkedList with elements of type String.