Need Help in trying to understand class objects

Question

I need help on understanding following problem.I have two files for that, which are as follows:
first file
public class Matrix extends Object {
     private int  matrixData[][];     // integer array to store integer data
     private int    rowMatrix;     // number of rows
     private int    colMatrix;     // number of columns
     public Matrix( int m, int n )
     {       /*Constructor: initializes rowMatrix and colMatrix,
          and creates a double subscripted integer array matrix
          of rowMatrix rows and colMatrixm columns. */
          rowMatrix = m;
          colMatrix = n;
          matrixData = new int[rowMatrix][colMatrix];
     public Matrix( int data[][] )
     {     /* Constructor: creates a double subscripted integer array
          and initilizes the array using values of data[][] array. */
          rowMatrix = data.length;
          colMatrix = data[0].length;
          matrixData = new int [rowMatrix][colMatrix];
          for(int i=0; i<rowMatrix; i++)
               for(int j=0; j<colMatrix; j++)
                    matrixData[i][j] = data[i][j];
     public int getElement( int i, int j)
     {      /* returns the element at the ith row and jth column of
          this matrix. */
          return matrixData[i][j];
     public boolean setElement( int  x, int i, int j)
     {     /* sets to x the element at the ith row and jth column
          of this matrix; this method  should also check the
          consistency of i and j (i.e.,  if  i and j are in the range
          required for subscripts; only in this situation the operation
          can succeed); the method should return true if the operation
          succeeds, and should return false otherwise.
          for(i=0;i<rowMatrix;i++){
               for(j=0;j<colMatrix;j++){
                    x = matrixData[i][j];
          if(i<rowMatrix && j<colMatrix){
               return true;
          else{
               return false;
     public Matrix transposeMatrix( )
     {     /*returns a reference to an object of the class Matrix,
          that contains the transpose of this matrix. */
     Verify tata;
     Matrix trans;
     //Matrix var = matrixData[rowMatrix][colMatrix];
     for(int row=0;row<rowMatrix;row++){
          for(int col=0;col<colMatrix;col++){
          matrixData[rowMatrix][colMatrix] = matrixData[colMatrix][rowMatrix];
     trans = new Matrix(matrixData);
                     return trans;
     public Matrix multipleMatrix( Matrix m )
          /*returns a reference to an object of the class Matrix,
          that contains the product of this matrix and matrix m. */
      m = new Matrix(matrixData);
          //Matrix var = matrixData[rowMatrix][colMatrix];
          for(int row=0;row<rowMatrix;row++){
               for(int col=0;col<colMatrix;col++){
                    //trans[row][col] = getElement(row,col);
     return m;
     public int diffMatrix( Matrix m )
          /*returns the sum of the squared element-wise differences
          of this matrix and m ( reference to the formula in the description
          of assignment 5) */
     return 0;
     public String toString(  )
          /* overloads the toString in Object */
          String output = " row = " + rowMatrix + " col="+colMatrix + "\n";
          for( int i=0; i<rowMatrix; i++)
               for( int j=0; j<colMatrix; j++)
                    output += " " + getElement(i,j) + " ";
               output += "\n";
          return output;
Second file
public class Verify extends Object {
     public static void main( String args[] )
          int[][] dataA = {{1,1,1},{2,0,1},{1,2,0},{4,0,0}}; // data of A
          int[][] dataB = {{1,2,2,0},{1,0,3,0},{1,0,3,4}};   // data of B
          Matrix matrixA = new Matrix(dataA);     // matrix A
          System.out.println("Matrix A:"+matrixA);
          Matrix matrixB = new Matrix(dataB);     // matrix B
          System.out.println("Matrix B:"+matrixB);
          // Calculate the left-hand matrix
          Matrix leftFormula = (matrixA.multipleMatrix(matrixB)).transposeMatrix();
          System.out.println("Left  Side:"+leftFormula);
          // Calculate the right-hand matrix
          Matrix rightFormula = (matrixB.transposeMatrix()).multipleMatrix(matrixA.transposeMatrix());
          System.out.println("Right Side:"+rightFormula);
          // Calculate the difference between left-hand matrix and right-hand matrix
          // according to the formula in assignment description
          double diff = leftFormula.diffMatrix(rightFormula);
          if( diff < 1E-6 ) // 1E-6 is a threshold
               System.out.println("Formula is TRUE");
          else
               System.out.println("Formula is FALSE");
}My basic aim is to verify the formula
(A . B)' =B' . A' or {(A*B)tranpose = Btranspose * A transpose}Now My problem is that I have to run the verify class file and verify class file will call the matrix class and its methods when to do certain calculations (for example to find left formula it calls tranposematrix() and multipleMatrix();)
How will I be able to get the matrix which is to be transposed in transposeMatrix method (in Matrix class)becoz in the method call there is no input for transposematrix() and only one input for multipleMatrix(matrix m).
please peeople help me put in this.
thanking in advance

Answer 1

Please don't crosspost.
http://forum.java.sun.com/thread.jspa?threadID=691969
The other one is the crosspost.Okay, whatever. I'm not really concerned with which one is the original. I just view the set of threads overall as being a crosspost, and arbitrarily pick one to point others toward.
But either way
knightofdurham... pick one thread and post only in
the one.Indeed. And indicate such in the other one.