Java, matrix

import java.io.*;
class Matrix
        {
            int a ,b,i,j;
        int matrix[][]=new int [12][14];
        void Read()
            {
                int a ,b,i,j;
        int matrix[][]=new int [12][14];    
            DataInputStream is=new DataInputStream(System.in);
            try
            {
            System.out.println("enter the row");
            a=Integer.parseInt(is.readLine());
            System.out.println("enter the col;umn");
            b=Integer.parseInt(is.readLine());
            System.out.println("enter the elements for the matrix");
            for(i=0;i<a;i++)
                    {
                    for(j=0;j<b;j++)
                            {
                            matrix[i][j]=Integer.parseInt(is.readLine());
                            }
                            }


                System.out.println("the matrix that you entered is");

                for(i=0;i<a;i++)
                    {
                    for(j=0;j<b;j++)
                            {
                        System.out.print(matrix[i][j]);
                            }
                        }
            }
                        catch(Exception ex)
                        {}
            }
                public static void main(String args[])
                {
                Matrix m=new Matrix();
                m.Read();
                }
                }

Hello Friend,

Try this:

import java.util.*;
class MatrixExamples{

    public static void main(String[] args){
    Scanner input = new Scanner(System.in);
    int[][] A = new int[2][2];
int[][] B = new int[2][2];
int[][] C = new int[2][2];
System.out.println("Enter elements for matrix A : ");
for (int i=0 ; i < A.length ; i++)
for  (int j=0 ; j < A[i].length ; j++){
A[i][j] = input.nextInt();
}
System.out.println("Enter elements for matrix B : ");
for (int i=0 ; i < B.length ; i++)
for  (int j=0 ; j < B[i].length ; j++){
B[i][j] = input.nextInt();
}
System.out.println("Matrix A: ");
        for (int i=0 ; i < A.length ; i++)
        {     System.out.println();
            for  (int j=0 ; j < A[i].length ; j++){
                System.out.print(A[i][j]+" ");
                  }
        }
System.out.println();
System.out.println("Matrix B: ");
        for (int i=0 ; i < B.length ; i++)
        {     System.out.println();
            for  (int j=0 ; j < B[i].length ; j++){
                System.out.print(B[i][j]+" ");
                  }
        }
System.out.println();
int menu = 0;
System.out.println();
System.out.println("1. Addition Of Matrix");
System.out.println("2. Subtraction Of Matrix");
System.out.println("3. Multiplication Of Matrix");
System.out.println("4. Exit");
boolean quit = false;
do{
System.out.print("Please enter your choice: ");
menu = input.nextInt();
System.out.println();

switch(menu) {
case 1:
    System.out.println("*Sum of 2 matrices*");
    for(int i=0;i<2;i++){
for(int j=0;j<2;j++){
C[i][j]=A[i][j]+B[i][j];
System.out.print(C[i][j]+" ");
}
System.out.println();
}
break;
case 2:
    System.out.println("Subtraction of 2 matrices*");
    for(int i=0;i<2;i++){
for(int j=0;j<2;j++){
C[i][j]=A[i][j]-B[i][j];
System.out.print(C[i][j]+" ");
}
System.out.println();
}
break;
case 3:
System.out.println("*Multiplication of 2 matrices*");

for(int i=0;i<2;i++)
{
for(int j=0;j<2;j++)
{
for(int k=0;k<2;k++)
{

C[i][j]+=A[i][k]*B[k][j];

}
}
}

for(int i=0;i<2;i++)
{
for(int j=0;j<2;j++)
{
System.out.print(+C[i][j]+" ");
}
System.out.println();
} 
break;
case 4:
quit = true;
break;
default:
System.out.println("Invalid Entry!");
 }
}
while (!quit);
}
}

Thanks

import java.io.*;
class Matrix
        {
            int a ,b,i,j;
        int matrix[][]=new int [12][14];
        void Read()
            {
                int a ,b,i,j;
        int matrix[][]=new int [12][14];    
            DataInputStream is=new DataInputStream(System.in);
            try
            {
            System.out.println("enter the row");
            a=Integer.parseInt(is.readLine());
            System.out.println("enter the col;umn");
            b=Integer.parseInt(is.readLine());
            System.out.println("enter the elements for the matrix");
            for(i=0;i<a;i++)
                    {
                    for(j=0;j<b;j++)
                            {
                            matrix[i][j]=Integer.parseInt(is.readLine());
                            }
                            }


                System.out.println("the matrix that you entered is");

                for(i=0;i<a;i++)
                    {
                    for(j=0;j<b;j++)
                            {
                        System.out.print(matrix[i][j]);
                            }
                        }
            }
                        catch(Exception ex)
                        {}
            }
                public static void main(String args[])
                {
                Matrix m=new Matrix();
                m.Read();
                }
                }

import java.io.*;
class Matrix
        {
            int a ,b,i,j;
        int matrix[][]=new int [12][14];
        void Read()
            {
                int a ,b,i,j;
        int matrix[][]=new int [12][14];    
            DataInputStream is=new DataInputStream(System.in);
            try
            {
            System.out.println("enter the row");
            a=Integer.parseInt(is.readLine());
            System.out.println("enter the col;umn");
            b=Integer.parseInt(is.readLine());
            System.out.println("enter the elements for the matrix");
            for(i=0;i<a;i++)
                    {
                    for(j=0;j<b;j++)
                            {
                            matrix[i][j]=Integer.parseInt(is.readLine());
                            }
                            }


                System.out.println("the matrix that you entered is");

                for(i=0;i<a;i++)
                    {
                    for(j=0;j<b;j++)
                            {
                        System.out.print(matrix[i][j]);
                            }
                        }
            }
                        catch(Exception ex)
                        {}
            }
                public static void main(String args[])
                {
                Matrix m=new Matrix();
                m.Read();
                }
                }