Java Arrays

Store multiple values in a single variable.

Examples

Access Array Elements

Accesses the first element (index 0).

public class Main {
  public static void main(String[] args) {
    String[] cars = {"Volvo", "BMW", "Ford", "Mazda"};
    System.out.println(cars[0]);
  }
}

Change Element

Modifying an element.

public class Main {
  public static void main(String[] args) {
    String[] cars = {"Volvo", "BMW", "Ford", "Mazda"};
    cars[0] = "Opel";
    System.out.println(cars[0]);
  }
}

Loop Through Array

Using a for loop to print all elements.

public class Main {
  public static void main(String[] args) {
    String[] cars = {"Volvo", "BMW", "Ford", "Mazda"};
    for (int i = 0; i < cars.length; i++) {
        System.out.println(cars[i]);
    }
  }
}

For-Each Loop

Simpler loop for arrays.

public class Main {
  public static void main(String[] args) {
    String[] cars = {"Volvo", "BMW", "Ford", "Mazda"};
    for (String i : cars) {
      System.out.println(i);
    }
  }
}

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