Array is collection same data type with sequential order. It is used to declare and access collection of variables.
Declare arrays:
First we have to specify the data type and follow by the variable name.
Syntax:
Datatype [] variablename;
Example:
Int [] numers;
Creating array:
Using new keyword we can create an array.
Syntax:
Datatype [] variablename= new datatype [ array size];
Example:
Int [] numbers= new int[10];
Example program:
public class sampleArray { public static void main(String[] args) { int[] numbers = {1, 2, 3, 4}; // Print all the array elements for (int i = 0; i < numbers.length; i++) { System.out.println(numbers[i] + " "); } // Summing all elements int total = 0; for (int i = 0; i < numbers.length; i++) { total += numbers[i]; } System.out.println("Total is " + total); // Finding the largest element int max = numbers[0]; for (int i = 1; i < numbers.length; i++) { if (numbers[i] > max) max = numbers[i]; } System.out.println("Max is " + max); } }
Output:
1
2
3
4
Total is 10
Max is 4
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