how to use array in array?

[sathiya moorthy]

int a[] = {1, 2, 3};
int b[] = {4, 5, 6};
int c[] = {7, 8, 9};

Object arr[] = new Object[4];
arr[0] = a;
arr[1] = b;
arr[2] = c;
i have arrays like this, now i want to print the values of array a,b,c from the array arr
can any one help me please

[Srinivasa Raghavan]

HTH

  
class array
{
public static void main(String[] args)
{
int a[] = {1, 2, 3};
int b[] = {4, 5, 6};
int c[] = {7, 8, 9};
 
Object arr[] = new Object[4];
arr[0] = a;
arr[1] = b;
arr[2] = c;
int d[] = (int[]) arr[0];
for ( int i=0;i<d.length;i++ )
 System.out.println( d[i] );
}
}

[ April 06, 2005: Message edited by: Srinivasa Raghavan ]

[Yosi Hendarsjah]

Something's not right in Srini's code. Can you see it?

Here's mine:

class array
{
    public static void main(String[] args)
    {
        int a[] = {1, 2, 3};
        int b[] = {4, 5, 6};
        int c[] = {7, 8, 9};
 
        int arr[][] = new int[3][];
        arr[0] = a;
        arr[1] = b;
        arr[2] = c;
 
        for ( int i = 0; i < arr.length;i++ ) {
            for (int j = 0; j < arr[i].length; j++) {
                System.out.println( arr[i][j] );
            }
        }
    }
}

[ April 06, 2005: Message edited by: Yosi Hendarsjah ]

[Srinivasa Raghavan]

Hi dude it's just an example code.
See the value of d[] is initilized to arr[0].

int d[] = (int[]) arr[0];
for ( int i=0;i<d.length;i++ ) System.out.println( d[i] );

Basically i thought sathiya moorthy needs to know the concept of casting an array from Object. Hence the code depicting this line "int d[] = (int[]) arr[0];" gets the int[] from the Object[] .
[ April 06, 2005: Message edited by: Srinivasa Raghavan ]

[Yosi Hendarsjah]

int d[] = (int[]) arr[0];
for ( int i=0;i<c.length;i++ ) // should it be d.length ?
    System.out.println( d[i] );

[Srinivasa Raghavan]

Yep it's a typo i have changed it ..

[Yosi Hendarsjah]

Originally posted by Srinivasa Raghavan:
Yep it's a typo i have changed it ..

My point is, to be a good programmer you have to be meticulous.

BTW, in programming, it's not called a typo. It's called a bug.