incompatible types

[effa]

incompatible types
found : void
required: int
result[j][i]=seq.shift1();

i'm trying to solve this error but i couldn't. could anyone help me to solve this error..

ur help is much appreciated.....

[Eranga]

Could you please post the complete error message over here?

[Eranga]

And also post what you've done, part of your code which is relevant. It's easy for us to comment on you.

[JosAH]

incompatible types
found : void
required: int
result[j][i]=seq.shift1();

i'm trying to solve this error but i couldn't. could anyone help me to solve this error..

ur help is much appreciated.....

My bet: result is a two dimensional array of ints and method shift() returns a void (i.e. nothing). The compiler saw that and didn't like it; method shift() should return an int.

kind regards,

Jos

[effa]

import java.util.Scanner;

public class try1 {
	int N;
	    protected int n = (int) (Math.log(N) / Math.log(2));
	    int[][] mix;
    protected int[] out;



	public void setInout() {
	        out = makeRandom(N);

	    }

		private int[] makeRandom(int rowSize) {
	        int i;
	        int[] outMatrix = new int[rowSize];
	        int[] shuffleMatrix = new int[rowSize];
	        shuffleMatrix = shuffly.shuffler(rowSize);
	        for (i = 0; i <= rowSize - 1; i++) {
	            outMatrix[i] = shuffleMatrix[i];

	        }
	        return outMatrix;
	    }


public int shift1() {
	        int i, temp;

	        int shright = n;
	        int shleft = (int) (Math.pow(2, n - 1) - 1) << n;
	        int j = 0;

	        for (i = 0; i <= n - 1; i++) {
	            for (j = 0; j <= N - 1; j++) {
	                temp = j * N + out[j];
	                mix[j][i] = temp & shleft;
	                mix[j][i] = mix[j][i] >> shright;
	            }
	            shleft /= 2;
	            shright--;
	        }
	       //int result[j][i] = mix[j][i];
	       return mix[j][i];
    }



public static int main(String[] args){


		System.out.print("Enter Matrix Size : ");
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();

        int i, j;


        SeqDecSim seq = new SeqDecSim(N);


 seq.setInout();




	int result[j][i]=seq.shift1();


			for (i = 0; i <= 3; i++) {
	         for (j = 0; j <= 8; j++) {

            System.out.println(result[j][i]);
}

}
}
}

hi..
when i run this pgram..
the error is:

incompatible types
found : void
required: int[][]
int result[][]=seq.shift1();

[Junky]

The shift1 method returns a single int but you are trying to assign it to a 2D array. Does not compute. Perhaps you want the method to return a 2D array instead. Or perhaps assign the returned int to a single position in the result 2D array.

[Tolls]

Please use code tags.

[JosAH]

when i run this pgram..
the error is:

incompatible types
found : void
required: int[][]
int result[][]=seq.shift1();

I don't believe you got that error diagnostic message because method shift1() returns an int. (but an int[][] return type is required).

kind regards,

Jos

[Eranga]

Please use code tags.

If you don't know how to do that, please check my forum signature.

[Eranga]

I don't believe you got that error diagnostic message because method shift1() returns an int. (but an int[][] return type is required).

You said that it's not complain about the incompatibility?

By the time shift1() invoke from SeqDecSim class, which I cannot see in the above code.

[Tolls]

Good point.
The shitf1() given in that code is from a different class (try1) isn't it?

[JosAH]

You said that it's not complain about the incompatibility?

By the time shift1() invoke from SeqDecSim class, which I cannot see in the above code.

Ah, yes, it's another shif1() method; isn't it nice when ops show code that has nothing to do with the problem; it's international "Mislead The Repliers Day" again ...

kind regards,

Jos

[Tolls]

You say that like it's a frustrating annoyance rather than a thing of joy and fun.

[JosAH]

You say that like it's a frustrating annoyance rather than a thing of joy and fun.

Not an annoyance; it's just the feeling of shame when I have to admit (again) that I fell for the trap. I should keep my mouth shut more ;-)

kind regards,

Jos

[pbrockway2]

I should keep my mouth shut more ;-)

Oh no! Remember the coffee! Unless you intend resorting to mainlining the stuff...

[JosAH]

Oh no! Remember the coffee! Unless you intend resorting to mainlining the stuff...

Hm, coffee ... I'll have another espresso and roll myself another cigaret; thank for the tip! I always drink this coffee, I´m hooked to it ;-)

kind regards,

Jos (<--- coffee brand spammer ;-)

[j2me64]

the syntax of the method shift1 is wrong. i think you should read how methods and arrays works in java. hope also my example may help:

public class try1 {

	public static int[][] shift1(int n) {
		int i[][] = new int[10][10];
		if (n == 0) {
			System.out.println("return null");
		 return null;
		}
		else {
			System.out.println("return i[][]");
			return i;
		}
	}

	public static void main(String[] args) {
		int[][] j;
		// even if shift1 return null all is ok
		j = shift1(0);
		if ( j == null) {
			System.out.println(" j is null");
		}
		// this time shift1 will return an int[][]
		j = shift1(1);
		if ( j != null) {
			System.out.println(" j is not null");
		}
	}
}