Accessing multidimensional char array

[Leepika Mukherjee]

Hi Everyone,

I am facing problem in running the following code of multidimensional char array. The program is properly compiled but while running it provides a default output instead of characters matrix. Kindly help me in this.

class CharArray
{
public static void main(String ar[])
{

char ca=new char[2][2];
ca[0][0]='a';
ca[0][1]='b';
ca[1][0]='c';
ca[1][1]='d';

for(int i=0;i {
for(int j=0;j {
ca[i][j]=(char)i;
System.out.print(a[i][j]);
}
System.out.println("");
}
}
}

[Dennis Handly]

I assume this is java.

>ca[i][j]=(char)i;

Any reason you are putting control chars into your array?

You might want to print out "i" and "j" so you know you are going through your nested loops properly.

[Leepika Mukherjee]

Hi,

I couldnt understand ur question. I want to print matrix of characters(a,b,c,..). I am unable to do it as I m getting default symbols while I run the program. So I need ur help to get proper output, as I am unable to judge where exactly I am missing.
The same program I have made for number matrix and its running exactly as needed. Only for char I couldnt make it out.
Kindly help me in this.

[Dennis Handly]

>I'm getting default symbols while I run the program

What default symbols?
You should redirect the output to a file an get a hex dump on that file:
xd -tc -tx1 file

>Only for char I couldn't make it out.

As I said, you are putting control chars into the array, not the characters:
ca[i][j]=(char)i;

Leave this out if you want that initial "a" ... "d".

[Leepika Mukherjee]

Kindly provide me the simplest program which can display multidimensional car array. I am getting confused so leave the previous program and guide me in a simplest way.

[Dennis Handly]

>provide me the simplest program which can display multidimensional char array.

Only if you want a C source.

[Leepika Mukherjee]

I mean to say the program should be in Java.. Kindly help me.

[Dennis Handly]

>I mean to say the program should be in Java

I can't help you there.
But as I said, try removing: ca[i][j]=(char)i;

[Leepika Mukherjee]

I already tried removing that but getting error again.totally confused. kindly provide me a similar program in java so that I can understand the error I am doing. For number matrix I had done similar coding as below and its giving exact output :-

class TwoDArray
{
public static void main(String ar[])
{
int[][] twod=new int[5][5];
for(int i=0;i {
for(int j=0;j {
twod[i][j]=i;
System.out.print(+twod[i][j]);
}
System.out.println("");
}

}
}
Output :-

00000
11111
22222
33333
44444

Kindly help me in coding similar program for displaying char matrix..
a b
c d

[Dennis Handly]

>help me in coding similar program for displaying char matrix.

If you already have these initializers: ca[0][0]='a';
You don't need: ca[i][j]=(char)i;

In C you could do:
ca[i][j]=(char)(i*2 + j + 0x40);
Or even better, assuming ASCII:
ca[i][j]=(char)(i*2 + j + ('a' - 1));

[Leepika Mukherjee]

Can anyone plzzzz. write provide me the complete java program for this as I have mentioned the coding which I have done and also I have tried removing the ca[i][j]=(char)i; as per ur suggestion but still getting errors.

Kindly provide me the complete program for this.