import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
        System.out.println("print 2d array");
    
      
        int [][] mat1 = { {3,4,5} , {8,5,9} };
                          
                 // 2d array we name it [i][j] 
      
          System.out.println("length of matrices ="+mat1.length);         
         
       
       
      
         for ( int i = 0; i<= mat1.length; i++)   
         
        { 
            
             for (int j=0; j<=mat1.length; j++)
            
             System.out.println(mat1[i][j]);
             
            
                     
         }
       
        
 
 
 
 
 
 
 
 
 
  }
}