java - Saving database attributes via sql-lite -

in program,i provided users facility of designing own database. have sucessfully achived have tables , values saved in class objects.

now want save in sql lite/create output xml file of database.

public class table { private arraylist<column> columns; private string name; private static int count=0; public table()  {     columns = new arraylist<column>();     name=new string();      this.name="table"+count;     count++; }  public void addcolumn(column column) {     for(column c: columns)     {        if(c.getname().equals(column.getname())){return;}     }      columns.add(column);  }  public void savetofile() throws ioexception {       filewriter fw = new filewriter("c:/users/ashad/desktop/text.txt", true);     bufferedwriter bw = new bufferedwriter(fw);      bw.write("\r\n");     bw.write(this.name);      bw.write("\r\n");  for(column c: columns) {  bw.write("\r\n");         bw.write(c.getname()+"  ");          bw.write(c.getdatatype()+"  ");    if(c.getpk()== true)  {         bw.write("true"+"  ");   }         else     {   bw.write("false"+"  ");      } if(c.getnn()== true) {     bw.write("true"+"   ");  }      else     {bw.write("false"+"  "); }     } bw.close(); }  public boolean deletecolumn(string name) {     (column c : columns)     {         if (c.getname().equals(name)) {return columns.remove(c);}     }     return false; }  public void viewcolumns() {       system.out.append(name+"  ");      for(column c: columns)   {       system.out.append("\n");       system.out.append(c.getname()+"  ");        system.out.append( c.getdatatype()+"  ");  if(c.getpk()== true) {     system.out.print(true); }      else     system.out.print(false);     } }  public string getname() {      return name; }  }    public class column { private string name;    private string datatype;   private boolean pk;   private boolean nn;     public column()  {  string name=new string();  string datatype=new string();    boolean pk=false;  boolean nn=false;  }    public string getname(){return name;}  public string getdatatype(){return datatype;}  public boolean getpk(){return pk;}  public boolean getnn(){return nn;}   public void setname(string n){name=n;}  public void setdatatype(object object){datatype=(string) object;}  public void setpk(boolean p){pk=p;}  public void setnn(boolean n){nn=n;}   }