java initialize array with size code example

Example 1: java new string array

String[] myStringArray = new String[3];
String[] myStringArray = {"a", "b", "c"};
String[] myStringArray = new String[]{"a", "b", "c"};

Example 2: java how to initialize an array

int[] arr = new int[10];	//Can hold 10 elements

Example 3: java create array with values

//Given values must match array type
int[] myIntArray = {1, 2, 3};

Example 4: how to initialize array in java

int[] arr = new int[5];	 // integer array of size 5 you can also change data type

Example 5: 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 6: declare an array without size java

import java.util.ArrayList;

ArrayList<Integer> arrayName = new ArrayList<Intger>();