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LinkedLists.java
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104 lines (80 loc) · 2.8 KB
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import java.util.LinkedList;
import java.util.List;
public class LinkedLists {
public static void main(String[] args) {
LinkedList<String> list = new LinkedList<>();
List<String> names = List.of("Diego", "Cristina", "Tutu");
try {
addValues(list, names);
print("LinkedList before: ", list);
removingValue(list, "Tutu");
findValue(list, 1);
changeValue(list, 0, "developer");
changeValue(list, 1, "java");
changeValue(list, 5, "no found item");
capitalizeItens(list);
} catch (Exception error) {
System.out.println("Error: " + error.getMessage());
} finally {
System.out.println("Exiting");
}
}
public static void addValues(LinkedList<String> list, List<String> itens) {
if (list == null || itens == null) {
throw new IllegalArgumentException("List or items cannot be null");
}
try {
boolean addingValues = list.addAll(itens);
if (!addingValues) {
System.out.println("Not values where added to the list");
return;
}
System.out.println("Values: "+ itens + " added successfully");
} catch (Exception error) {
System.out.println("An error occurred while adding values: " + error.getMessage());
}
}
public static void removingValue(LinkedList<String> list, String item) {
isListNull(list);
boolean itemRemoved = list.remove(item);
if (!itemRemoved) {
System.out.println("No itens removed");
return;
}
System.out.println(item + " Item removed from list");
print("LinkedList after: ", list);
}
public static void findValue(LinkedList<String> list, int index) {
isListNull(list);
try {
String foundName = list.get(index);
System.out.println("Item: " + foundName + " found at index: " + index);
} catch (IndexOutOfBoundsException error) {
System.out.println("Item not found at index: " + index);
}
}
public static void changeValue(LinkedList<String> list, int indexToChange, String newValue) {
isListNull(list);
try {
String oldValue = list.set(indexToChange,newValue);
System.out.println("Value: " + oldValue + " change to: " + newValue);
} catch (IndexOutOfBoundsException error) {
System.out.println("No item found at index " + indexToChange);
} finally {
print("LinkedList after change: ", list);
}
}
private static void capitalizeItens(LinkedList<String> list) {
isListNull(list);
list.replaceAll(String::toUpperCase);
System.out.println("Updated list: " + list);
}
private static void isListNull(LinkedList<String> list) {
if(list == null) {
throw new IllegalArgumentException("List cannot be null");
}
}
private static void print(String message, LinkedList<String> list) {
System.out.println(message + list);
}
}