I WOULD LIKE TO UNDERSTAND HOW CAN I SOLVE THIS JSF PROBLEM

INTERFACE

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$2)$;

POJO

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$2)\{$

JAVA BEAN

@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

public MatriceBean

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