nxn Matrix in Java Example

import java.io.*; 
 class NxNMatrix  
 { 
             public static void main(String args[]) throws IOException 
             { 
                         BufferedReader gg=new BufferedReader(new InputStreamReader(System.in)); 
                         int i,j,r,c; 
                         String m; 
                         System.out.print("How many Rows ? "); 
                         m=gg.readLine(); 
                         r=Integer.parseInt(m); 
                         System.out.print("How many Columns ? "); 
                         m=gg.readLine(); 
                         c=Integer.parseInt(m); 
                         int h[] []=new int[r] ; 
                         System.out.println("Enter elements for matrix of order "+r+" x "+c); 
                         for(i=0;i<=r-1;i++) 
                         { 
                                     for(j=0;j<=c-1;j++) 
                                     { 
                                                 m=gg.readLine(); 
                                                 h[i] [j]=Integer.parseInt(m); 
                                     } 
                         } 
                         System.out.println("Elements in matrix are "); 
                         for(i=0;i<=r-1;i++) 
                         { 
                                     for(j=0;j<=c-1;j++) 
                                     { 
                                                 System.out.print(h[i][j]+"\t"); 
                                     } 
                                     System.out.println(); 
                         } 
             } 
 }