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What are the types of arrays in Java?
There are two types of arrays in Java they are −
Single dimensional array − A single dimensional array of Java is a normal array where, the array contains sequential elements (of same type) −
int[] myArray = {10, 20, 30, 40}
Example
public class TestArray { public static void main(String[] args) { double[] myList = {1.9, 2.9, 3.4, 3.5}; // Print all the array elements for (int i = 0; i < myList.length; i++) { System.out.println(myList[i] + " "); } // Summing all elements double total = 0; for (int i = 0; i < myList.length; i++) { total += myList[i]; } System.out.println("Total is " + total); // Finding the largest element double max = myList[0]; for (int i = 1; i < myList.length; i++) { if (myList[i] > max) max = myList[i]; } System.out.println("Max is " + max); } }
Output
1.9 2.9 3.4 3.5 Total is 11.7 Max is 3.5
Multi-dimensional array − A multi-dimensional array in Java is an array of arrays. A two dimensional array is an array of one dimensional arrays and a three dimensional array is an array of two dimensional arrays.
Example
public class Tester { public static void main(String[] args) { int[][] multidimensionalArray = { {1,2},{2,3}, {3,4} }; for(int i = 0 ; i < 3 ; i++){ //row for(int j = 0 ; j < 2; j++){ System.out.print(multidimensionalArray[i][j] + " "); } System.out.println(); } } }
Output
1 2 2 3 3 4
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