Declaring and Initializing 1-dimensional arrays Java Program

An array groups elements of the same type. It makes it easy to manipulate the information contained in them.

    class Arrays1
    {
        public static void main(String args[])
        {
            // this declares an array named x with the type "array of int" and of
            // size 10, meaning 10 elements, x[0], x[1] , ... , x[9] ; the first term
            // is x[0] and the last term x[9] NOT x[10].
            int x[] = new int[10];
            // print out the values of x[i] and they are all equal to 0.

        for(int i=0; i<=9; i++)
        System.out.println("x["+i+"] = "+x[i]);
        // assign values to x[i]

        for(int i=0; i<=9; i++)
        x[i] = i; // for example
        // print the assigned values of x[i] : 1,2,......,9

        for(int i=0; i<=9; i++)
        System.out.println("x["+i+"] = "+x[i]);
        // this declares an array named st the type "array of String"
        // and initializes it

        String st[]={"first","second","third"};
        // print out st[i]
    for(int i=0; i<=2; i++)
    System.out.println("st["+i+"] = "+st[i]);
        }
}

Posted in: J2SE, Java