If you want the columns of a JTable to automatically resize when the table is resized, you can use the setAutoResizeMode method.
public class JTableAutoResizeExample {
Here is an example of how to change the text alignment for a specific column: Java Swing - JTable Text Alignment And Column W...
By default, the text alignment of a JTable is left-aligned for all columns. However, you may want to change the text alignment for specific columns or for the entire table. To achieve this, you can use the TableCellRenderer interface. If you want the columns of a JTable