java array with size code example

Example 1: define an array of size n in java

int[] myIntArray = new int[3];
int[] myIntArray = {1, 2, 3};
int[] myIntArray = new int[]{1, 2, 3};

// Since Java 8. Doc of IntStream: https://docs.oracle.com/javase/8/docs/api/java/util/stream/IntStream.html

int [] myIntArray = IntStream.range(0, 100).toArray(); // From 0 to 99
int [] myIntArray = IntStream.rangeClosed(0, 100).toArray(); // From 0 to 100
int [] myIntArray = IntStream.of(12,25,36,85,28,96,47).toArray(); // The order is preserved.
int [] myIntArray = IntStream.of(12,25,36,85,28,96,47).sorted().toArray(); // Sort

Example 2: how to find length of array in java

let coolCars = ['ford', 'chevy'];
//to find length, use the array's built in method
let length = coolCars.length;
//length == 2.

Example 3: length of array in java

arr.length;

Example 4: array declaration and initialization in java

int[] age = new int[5];

Example 5: set array length java

int[] num = new int[5];

Example 6: java get size of array

arrayname.length