Using Collections and Arrays
In this exercise, you will see how the Collections Framework supporting classes of Collections and Arrays can help you manipulate and work with data more easily.
Este exercicio faz parte do curso
Data Types and Exceptions in Java
Instruções do exercicio
- Add
"Lima","Bogota","Santiago"to thecapitalsArrayList. - Convert the array in the
euCapitalsvariable to aList. - Sort
capitalsalphabetically. - Reverse the order of
capitals
exercicio interativo prático
Tente este exercicio completando este código de exemplo.
public class AllTheCities {
public static void main(String[] args) {
String[] euCapitals = {"Paris", "London", "Prague"};
ArrayList capitals = new ArrayList();
// Add cities to capitals all at once
Collections.____(____, "Lima", "Bogota", "Santiago");
// Convert euCapitals to List
____<____> euCapitalsList = Arrays.____(euCapitals);
// Sort capitals
____.____(capitals);
// Reverse capitals
Collections.____(____);
System.out.println(capitals);
System.out.println(euCapitalsList);
System.out.println(euCapitals);
}
}