Program to explain some behaviors of an array

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class array_try
{
private static int arr[][]=new int[5][5];
private static int arr2[][]=new int[6][7];

public static void main(String args[])
{
System.out.println("Dsplaying details of arr[][]");
System.out.println("row="+arr.length);
System.out.println("column="+arr[0].length);
arr2[5][6]=50;
arr=arr2;
System.out.println("arr[5][6]="+arr[5][6]);
System.out.println("New row="+arr.length);
System.out.println("New column="+arr[0].length);

}
}

OUTPUT
row=5
column=5
arr[5][6]=50
New row=6
New column=7
Dsplaying details of arr[][]
row=5
column=5
arr[5][6]=50
New row=6
New column=7

CONCLUSION

you may change the array size if desired

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what is this for???

what do we have to do in this program??

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this program shows that you may change the array size if desired and can store the value of an array in another array by arr1=arr2

Subject: @saif Thu Mar 18, 2010 1:35 pm

hey guys dont u think..dat this logic is nt suitable
by writing arr=arr2;
u r only making the reference of arr point towards arr2
u r nt changing the array length bt u r creating two copies of same arr2 so u loose the original arr

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whatever...! But the point that saif wants top bring out is that arrays are mutable...!! and that it can be copied..! as he has just initialised one position to 50. So..it doesnt matter if we just copied it the ordinary way...!!

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and yes we will loose the original array arr...

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saif..what is the property that u wish to present over here.?

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you have rightly guessed.I just wanted to show that "arrays are mutable" and we can do arr1=arr2; we can do same thing with objects....

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yea man...good program..!