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How are fields defined in a jtable table?


Asked by Dahlia Sawyer on Dec 06, 2021 FAQ



Fields: Defines structure of the record, create/edit forms and table. jTable defines an row in the table as 'record'. So, a record must has fields as fields of a relational database table. NOTE: When you create a jTable instance, a table is created but no data is loaded to the table. load method is used to do it.
Just so,
The JTable class is a part of Java Swing Package and is generally used to display or edit two-dimensional data that is having both rows and columns. It is similar to a spreadsheet. This arranges data in a tabular form. JTable (): A table is created with empty cells. JTable (int rows, int cols): Creates a table of size rows * cols.
Subsequently, Let us attempt to display such a data with JTable with minimum amount of code. The idea is to only display the details in the table. The user should not be allowed to edit any data. Also, text-based columns should be left-aligned and numerical values should be right-aligned. This code attempts to build a table with minimum amount of effort.
In respect to this,
Functions in JTable: addColumn(TableColumn []column) : adds a column at the end of the JTable. clearSelection() : Selects all the selected rows and columns. editCellAt(int row, int col) : edits the intersecting cell of the column number col and row number row programmatically, if the given indices are valid and the corresponding cell is editable.
Moreover,
More subtly, scalar fields are often contrasted with pseudoscalar fields. In physics, scalar fields often describe the potential energy associated with a particular force.