Something

package org;


import java.awt.*;
import java.awt.event.*;



/**
 *
 * @author Desarrollo
 */
public class tituloDP {
   
    private String nom_tit;
    private int ncol=0;
    private int nfil=0;
    private String[] columnas=new String[this.ncol];
    private String[] filas=new String[this.nfil];
    private String[][] datos=new String[this.ncol][this.nfil];
       
    private int band=0;
      
    
    public tituloDP(){
        nom_tit=new String("");
    }

public void set_nom_tit(String n_tit){
    this.nom_tit = n_tit;
}
public void set_ncol(int c){
    this.ncol = c;
}
public void set_nfil(int f){
    this.nfil = f;
}
public void set_columnas(String col, int i)
{   this.columnas=new String[ncol];
    this.columnas[i]=col;
}
public void set_filas(String fil, int i)
{    this.filas=new String[nfil];
     this.filas[i]=fil;
}
public void set_datos(String dat, int i, int j)
{     this.datos=new String[this.ncol][this.nfil];
      if(i<this.ncol&&j<this.nfil)
      {
          this.datos[i][j]=dat;
          System.out.println("Posiscion i: "+i+" j: "+j);
          System.out.println(this.datos[i][j]);
      }
      else
      System.out.println("Valores de i y j no validos"); 
      
}


// create getter methods


public String get_nom_tit(){
    return this.nom_tit;
}
public int get_ncol(){
return this.ncol;
}
public int get_nfil(){
return this.nfil;
}
public String[] get_columnas(){
return this.columnas;
}
public String[] get_filas(){
return this.filas;
}
public String get_datos()[][]{
return this.datos;
}
}