public interface Matrices $\{$

$/*$

Adds two matrices and returns the result as a new matrix.

@param m$1-$ matrix $1$

param m$1-$ matrix $2$

@return $-$ the addition of the two matrices

@throws an illegalArgumentException if the sizes of n$1,$ m$2$ are illegal for addition

$*/$

public Integer$[][]$ addMatrices$($Integer$[][]$ m$1,$ Integer$[][]$ m$2)$;

$/*$

Multiples two matrices and returns the result as a new matrix.

@param m$1-$ matrix $1$

param m$1-$ matrix $2$

@return $-$ the addition of the two matrices

@throws an illegalArgumentException if the sizes of n$1,$ m$2$ are illegal for multiplication

$*/$

public Integer$[][]$ multiplyMatrices$($Integer$[][]$ m$1,$ Integer$[][]$ m$2)$;

$\}$public class MathOperations implements Matrices $\{$

private Integer$[][]$ A; $//$matrix A

private Integer$[][]$ B; $//$matrix B

private Integer$[][]$ c; $//$A $+$ B OR A X B$,$ the resulting matrix

$/**$

$*$ Get the value of c

$*$

$*$ @return the value of c

$*/$

public Integer$[][]$ getC$()\{$

return c;

$\}$

$/**$

$*$ Set the value of c

$*$

$*$ @param c new value of c

$*/$

public void setC$($Integer$[][]$ c$)\{$

this.c $=$ c;

$\}$

$/**$

$*$ Get the value of B

$*$

$*$ @return the value of B

$*/$

public Integer$[][]$ getB$()\{$

return B;

$\}$

$/**$

$*$ Set the value of B

$*$

$*$ @param B new value of B

$*/$

public void setB$($Integer$[][]$ B$)\{$

this.B $=$ B;

$\}$

$/**$

$*$ Get the value of A

$*$

$*$ @return the value of A

$*/$

public Integer$[][]$ getA$()\{$

return A;

$\}$

$/**$

$*$ Set the value of A

$*$

$*$ @param A new value of A

$*/$

public void setA$($Integer$[][]$ A$)\{$

this.A $=$ A;

$\}$

$/**$

$*$ Adds two matrices and returns the result as a new matrix.

$*$

$*$ @param m$1-$ matrix $1$

$*$ @param m$2-$ matrix $2$

$*$ @return $-$ the addition of the two matrices

$*$ @throws an IllegalArgumentException if the sizes of n$1,$ m$2$ are illegal

$*$ for addition

$*$

$*$

$*$

$*/$

@Override

public Integer$[][]$ addMatrices$($Integer$[][]$ m$1,$ Integer$[][]$ m$2)\{$

$\}$

$/*$

Multiples two matrices and returns the result as a new matrix.

@param m$1-$ matrix $1$

@param m$2-$ matrix $2$

@return $-$ the addition of the two matrices

@throws an illegalArgumentException if the sizes of n$1,$ m$2$ are illegal for multiplication

$*/$

@Override

public Integer$[][]$ multiplyMatrices$($Integer$[][]$ m$1,$ Integer$[][]$ m$2)\{$

$\}$@Named$($value $=$ "matriceBean"$)$

@SessionScoped

public class MatriceBean implements Serializable $\{$

private Integer rowsA;

private Integer columnsA;

private Integer rowsB;

private Integer columnsB;

MathOperations matrices $=$ new MathOperations$()$;

public MathOperations getMatrices$()\{$

return matrices;

$\}$

$/**$

$*$ Get the value of columnsB

$*$

$*$ @return the value of columnsB

$*/$

public Integer getColumnsB$()\{$

System.out.println$("$getColumnsB$()")$;

return columnsB;

$\}$

$/**$

$*$ Set the value of columnsB

$*$

$*$ @param columnsB new value of columnsB

$*/$

public void setColumnsB$($Integer columnsB$)\{$

System.out.println$("$setColumnsB$"+$ columnsB$)$;

this.columnsB $=$ columnsB;

$\}$

$/**$

$*$ Get the value of rowsB

$*$

$*$ @return the value of rowsB

$*/$

public Integer getRowsB$()\{$

System.out.println$("$getRowsB$()")$;

return rowsB;

$\}$

$/**$

$*$ Set the value of rowsB

$*$

$*$ @param rowsB new value of rowsB

$*/$

public void setRowsB$($Integer rowsB$)\{$

System.out.println$("$setRowsB$"+$ rowsB$)$;

this.rowsB $=$ rowsB;

$\}$

$/**$

$*$ Get the value of columnsA

$*$

$*$ @return the value of columnsA

$*/$

public Integer getColumnsA$()\{$

System.out.println$("$getColumnsA$()")$;

return columnsA;

$\}$

$/**$

$*$ Set the value of columnsA

$*$

$*$ @param columnsA new value of columnsA

$*/$

public void setColumnsA$($Integer columnsA$)\{$

System.out.println$("$setColumnsA$"+$ columnsA$)$;

this.columnsA $=$ columnsA;

$\}$

$/**$

$*$ Get the value of rowsA

$*$

$*$ @return the value of rowsA

$*/$

public Integer getRowsA$()\{$

System.out.println$("$getRowsA$()")$;

return rowsA;

$\}$

$/**$

$*$ Set the value of rowsA

$*$

$*$ @param rowsA new value of rowsA

$*/$

public void setRowsA$($Integer rowsA$)\{$

System.out.println$("$setRowsA$"+$ rowsA$)$;

this.rowsA $=$ rowsA;

$\}$

$/**$

$*$ Creates a new instance of MatriceBean

$*/$

public MatriceBean$()\{//$ how do we now the size of the matrix

$\}$

$\}$