Método LinkedList removeFirstOccurrence() en Java

java.util.LinkedList.removeFirstOccurrence() se utiliza para eliminar la primera aparición del elemento especificado de la lista. Si el elemento especificado no aparece, la lista permanece sin cambios.
 

Sintaxis : 

LinkedListObject.removeFirstOccurrence(Object element)

Parámetros: el método toma un elemento de parámetro que se eliminará de la lista. El tipo Objeto debe ser el mismo que los elementos de la lista.
Valor de retorno: el método devuelve True booleano si la lista contiene el elemento especificado y se elimina; de lo contrario, devuelve false.
Los siguientes programas ilustran el método removeFirstOccurrence(): 
Programa 1:  

// Java code to demonstrate removeFirstOccurrence() method
import java.util.LinkedList;
public class GfG {
    // Main method
    public static void main(String[] args)
    {
 
        // Creating a LinkedList object
        LinkedList<String> list = new LinkedList<String>();
 
        // Adding an element at the last
        list.addLast("one");
 
        // Adding an element at the last
        list.addLast("two");
 
        // Adding an element at the last
        list.addLast("three");
 
        // Adding an element at the last
        list.addLast("one");
 
        System.out.print("List before removing the "+
                   "first Occurrence of \"one\" : ");
 
        // Printing the list
        System.out.println(list);
 
        // Removing first occurrence of one.
        boolean returnValue = list.removeFirstOccurrence("one");
 
        // Printing the returned value
        System.out.println("Returned Value : " + returnValue);
 
        System.out.print("List after removing the"+
                            " first Occurrence of \"one\" : ");
 
        // Printing the list
        System.out.println(list);
    }
}

List before removing the first Occurrence of "one" : [one, two, three, one]
Returned Value : true
List after removing the first Occurrence of "one" : [two, three, one]

Programa 2: 

// Java code to demonstrate removeFirstOccurrence method in LinkedList
 
import java.util.LinkedList;
 
public class GfG {
    // Main method
    public static void main(String[] args)
    {
 
        // Creating a LinkedList object
        LinkedList<Integer> list = new LinkedList<Integer>();
 
        // Adding an element at the last
        list.addLast(10);
 
        // Adding an element at the last
        list.addLast(20);
 
        // Adding an element at the last
        list.addLast(30);
 
        // Adding an element at the last
        list.addLast(10);
 
        System.out.print("List before removing the"+
                  " first Occurrence of \"10\" : ");
 
        // Printing the list
        System.out.println(list);
 
        // Removing first occurrence of one.
        boolean returnValue = list.removeFirstOccurrence(10);
 
        // Printing the returned value
        System.out.println("Returned Value : " + returnValue);
 
        System.out.print("List after removing the"+
                           " first Occurrence of \"10\" : ");
 
        // Printing the list
        System.out.println(list);
    }
}

List before removing the first Occurrence of "10" : [10, 20, 30, 10]
Returned Value : true
List after removing the first Occurrence of "10" : [20, 30, 10]