Java Array Assignments?

[abimaran]

Given:

byte[] array1, array2[];
byte array3[][];
byte[][] array4;

If each array has been initialized, which statement will cause a Compiler Error?

Give me the answer and the reasons. Thanx n advanced!

1) array2 = array1;
2) array2 = array3;
3) array2 = array4;
4) Both 1 & 2.
5) Both 1 & 3.
6) Both 2 & 3.

[JosAH]

Homework?

kind regards,

Jos

[abimaran]

No, JosAH. I'm preparing for SCJP 6 exam.

[JosAH]

No, JosAH. I'm preparing for SCJP 6 exam.

Well, count the number of dimensions for each array and see for yourself.

kind regards,

Jos

[abimaran]

Can we assign one Dimentional array into 2 - Dimentional array and we've to assign every member of one array to other by using a loop?

Here??

[r035198x]

...

Give me the answer and the reasons. Thanx n advanced!

...

What is your answer and what are your reasons?

[abimaran]

The answer should be within those 6 answers.

[JosAH]

The answer should be within those 6 answers.

Of course; otherwise you would've gotten lots of replies telling you that the correct answer wasn't in the list. btw, have you been a victim of the ferocious brain eater? Is it still hungry? What do you think the answer is?

kind regards,

Jos

[abimaran]

array1 is 1D array and array2, array3, array4 are 2D arrays. In JAVA, declaring an array means it(JAVA) creates a variable with a reference to an array. All arrays are technically 1D arrays, Multi dimensional arrays are arrays of arrays.

So, Can we assign 1D array variable into 2D array variable?

[JosAH]

array1 is 1D array and array2, array3, array4 are 2D arrays. In JAVA, declaring an array means it(JAVA) creates a variable with a reference to an array. All arrays are technically 1D arrays, Multi dimensional arrays are arrays of arrays.

So, Can we assign 1D array variable into 2D array variable?

Suppose the first line isn't yelled at by the compiler, what is the second line supposed to do?

int[][] array2d= new int[42]; // assign a 1d array to a 2d ref.
array[1][1]= 54; // where should this be stored?

kind regards,

Jos