JAVA EE: Java Tutorial : Java Array (int values)

Tuesday, 20 October 2015

Java Tutorial : Java Array (int values)

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Java Tutorial : Java Array (int values)

ArrayDemo.java

class ArrayDemo
{
    public static void main(String[] args)
    {
        // declares an array of integers
        int[] anArray;

        // allocates memory for 10 integers
        anArray = new int[10];

        // initialize first element
        anArray[0] = 300;
        // initialize second element
        anArray[1] = 600;
        // and so forth
        anArray[2] = 900;
        anArray[3] = 150;
        anArray[4] = 4500;
        anArray[5] = 5000;
        anArray[6] = 3000;
        anArray[7] = 1000;
        anArray[8] = 8000;
        anArray[9] = 2000;

        System.out.println("Element at index 0: " + anArray[0]);
        System.out.println("Element at index 1: " + anArray[1]);
        System.out.println("Element at index 2: " + anArray[2]);
        System.out.println("Element at index 3: " + anArray[3]);
        System.out.println("Element at index 4: " + anArray[4]);
        System.out.println("Element at index 5: " + anArray[5]);
        System.out.println("Element at index 6: " + anArray[6]);
        System.out.println("Element at index 7: " + anArray[7]);
        System.out.println("Element at index 8: " + anArray[8]);
        System.out.println("Element at index 9: " + anArray[9]);
    }
}

Output

Element at index 0: 300
Element at index 1: 600
Element at index 2: 900
Element at index 3: 150
Element at index 4: 4500
Element at index 5: 5000
Element at index 6: 3000
Element at index 7: 1000
Element at index 8: 8000
Element at index 9: 2000

ArrayLoopDemo.java

class ArrayLoopDemo
{
    public static void main(String[] args)
    {
        // declares an array of integers
        int[] anArray;

        // allocates memory for 10 integers
        anArray = new int[10];

        // initialize first element
        anArray[0] = 300;
        // initialize second element
        anArray[1] = 600;
        // and so forth
        anArray[2] = 900;
        anArray[3] = 150;
        anArray[4] = 4500;
        anArray[5] = 5000;
        anArray[6] = 3000;
        anArray[7] = 1000;
        anArray[8] = 8000;
        anArray[9] = 2000;

        System.out.println("Getting each element from the array using foreach loop:\n");
        int i=0;
        for (int element : anArray)
        {
            System.out.println("Element at Index "+ i + " : "+element);
            ++i;
        }
    }
}

Output

Getting each element from the array using foreach loop:

Element at Index 0 : 300
Element at Index 1 : 600
Element at Index 2 : 900
Element at Index 3 : 150
Element at Index 4 : 4500
Element at Index 5 : 5000
Element at Index 6 : 3000
Element at Index 7 : 1000
Element at Index 8 : 8000
Element at Index 9 : 2000