Arrays in Java

In Java, an array is a container object that holds a fixed number of values of a single type. Arrays are used to store multiple values in a single variable, rather than declaring separate variables for each value.

Here is an example of how to declare and initialize an array in Java:

int[] numbers = {1, 2, 3, 4, 5};

You can access the elements of an array using the index operator:

System.out.println(numbers[0]);  // prints 1
System.out.println(numbers[1]);  // prints 2

You can also use a loop to iterate over the elements of an array:

for (int i = 0; i < numbers.length; i++) {
  System.out.println(numbers[i]);
}

This will print all the elements of the numbers array.

You can also declare an array and specify its size, and then initialize the elements of the array separately:

int[] numbers = new int[5];
numbers[0] = 1;
numbers[1] = 2;

In this example, we declare an array of integers called numbers with a size of 5, and then assign values to each element of the array using the index operator ([]).