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Updating database from jtable

Posted on by Mirisar Posted in Marry a foreigner 5 Comments ⇩

Note that SQL starts numbering its rows and columns at 1, but the TableModel interface starts at 0; this is the reason why the rowIndex and columnIndex values are incremented by 1. Returns the value for the cell at intersection of the column columnIndex and the row rowIndex. Object getValueAt int rowIndex, int columnIndex: The following methods have not been implemented because this sample does not allow users to directly edit the contents of the table: Returns the name of the column specified by the parameter columnIndex. Calls the method CoffeesTableModel. The JTable class uses this method to label each of its columns. The constructor of the class CoffeesFrame initializes and lays out the Swing components. String getColumnName int columnIndex: Adds a listener to the list that is notified each time a change to the data model occurs. Sets the value in the cell at the intersection of the column columnIndex and the row rowIndex to the object aValue. Creates a message dialog box that displays the row to be added to the table. Returns the number of columns in the model. Adding Listeners for Buttons The following statement adds a listener to the button Add row to table: A CachedRowSet object enables the user of the application to make changes to the data contained in it without being connected to the database.

Updating database from jtable


The following statement adds a listener to the button Discard changes: String getColumnName int columnIndex: Calls the method CoffeesTableModel. The JTable class uses this method to label each of its columns. In addition, because a CachedRowSet object is a JavaBeans component, it can notify other components when certain things happen to it. Returns the number of rows in the model. Returns the most specific superclass for all the cell values in the column. The JTable class uses this method to populate its table. The constructor of the class CoffeesFrame initializes and lays out the Swing components. Sets the value in the cell at the intersection of the column columnIndex and the row rowIndex to the object aValue. Adding Listeners for Buttons The following statement adds a listener to the button Add row to table: See the source code for CoffeesFrame. This method is called when a user adds a row to the table. A CachedRowSet object enables the user of the application to make changes to the data contained in it without being connected to the database. Removes a listener from the list that is notified each time a change to the data model occurs. When the row set coffeesRowSet is notified of one of these changes, the method CoffeesFrame. Returns the value for the cell at intersection of the column columnIndex and the row rowIndex. Returns true if the cell at the intersection of the column rowIndex and the row columnIndex can be edited. Creates a message dialog box that displays the row to be added to the table. Note that SQL starts numbering its rows and columns at 1, but the TableModel interface starts at 0; this is the reason why the rowIndex and columnIndex values are incremented by 1. Returns the number of columns in the model. Adds a listener to the list that is notified each time a change to the data model occurs. Before implementing the methods of the interface TableModel, the constructor of the class CoffeeTableModel initializes various member variables required for these implemented methods as follows: To keep things simple, this method returns the String class, thereby converting all data in the table into String objects. The following methods have not been implemented because this sample does not allow users to directly edit the contents of the table: It specifies how a JTable object should retrieve data from a RowSet object and display it in a table. Object getValueAt int rowIndex, int columnIndex:

Updating database from jtable


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