Untitled

Multiple Columns in Java
Object[][] table = new Object[rows][columns];
table[1][3] = "Value for row 2, column 4";

List<List<Object>> table = new ArrayList<List<Object>>();
List<Object> row = new ArrayList<Object>();
row.add("Value for first row, first column");
row.add("Value for first row, second column");
table.add(new ArrayList<Object>()); // add first row

public class DataSet {
  private Object col1;
  private Object col2;
  // ...
  // constructor, getters, setters, and so on
}

List<DataSet> table = new ArrayList<DataSet>();
table.add(new DataSet(/* ... */));  // add another row

1. use two dimentional array

2. use embeded databse

3. store in system prefrance

4. store your object in object output stream in file system