public int Nrows(String name_of_massive){

public int Nrows(String name_of_massive){

• public int Nrows(String name_of_massive){
• //кол-во строк в массиве name_of_massiv
• try{
• MasSize m=new MasSize();
• m.setName(name_of_massive);
• m.setColumns(0);
• m.setRows(0);
• if(!tables.contains(m)) {
• System.out.println("there is no such massive");
• return -1; }
• MasSize m1=(MasSize)
• tables.get(tables.indexOf(m));
• return m1.getRows();}
• catch(Exception e){
• System.out.println("In function Ncolumns");
• e.printStackTrace();
• return -1;}}

public void delete_mas(String name_of_massive){

• public void delete_mas(String name_of_massive){
• //удаление массива name_of_massive из базы данных
• try{
• MasSize m=new MasSize();
• m.setName(name_of_massive);
• m.setColumns(0);
• m.setRows(0);
• if(!tables.contains(m)) {
• System.out.println("there is no such massive");
• return; }
• String str="drop table "+name_of_massive;
• Statement stmt2 = conn.createStatement();
• stmt2.executeUpdate(str);}
• catch(Exception e){
• System.out.println("In function delete_mas");
• e.printStackTrace();}}}