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// Use the length array member.

public class LengthDemo {

public static void main(String[] args) {

int list[] = new int[10];

int TwoD_list[][] = new int[10][20];

int[] nums = {1, 2, 3};

int table [][] = { // a variable-length table

{1, 2, 3},

{4, 5},

{6, 7, 8, 9}

};

/*

* int table [][] = { {1, 2, 3}, {4, 5}, {6, 7, 8, 9} };

*

* */

// int table2[][] = new int[3][5]; It is only after the the creation of a instance of two dimensional that table2 is linked with a real array. Textbook page 163.

// table2 = { {2, 4, 6, 8, 10}, {12, 14, 16, 18, 20}, {22, 24, 26. 28, 30} }; // Arrays can be initialized when they are created. But in this case, this is a duplicate initialization for table2. Textbook page 165.

// int table3[3][5] = { {2, 4, 6, 8, 10}, {12, 14, 16, 18, 20}, {22, 24, 26. 28, 30} };

// Not a valid use of array reference variable.

System.out.println("length of list is " + list.length);

System.out.println("length of TwoD_list is " + TwoD_list.length);

System.out.println("length of nums is " + nums.length);

System.out.println("length of table is " + table.length);

System.out.println("length of table[0] is " + table[0].length);

System.out.println("length of table[1] is " + table[1].length);

System.out.println("length of table[2] is " + table[2].length);

System.out.println();

// Use length to initialize "list"

for (int i = 0; i < list.length; i++) // Use length to control a for loop.

list[i] = i*i;

System.out.print("Here is list: ");

// now use length to display list

for (int i = 0; i < list.length; i++)

System.out.print(list[i] );

System.out.println();

}

}