How to set the cellrender of a cell in JTable

player5555

Hello everyone, it seems that JTable can only set one column of cellrender
I want to set the cellrender of the specified cell instead of the entire column. What should I do?

player5555

Is it possible to use prepareRenderer?

seakey

jtable.setCellSelectionEnable(true);

firezq

Haha, I used to be similar to you, but I set up the editor and found a lot of information. The following is how I set the CellEditor of the specified cell, I hope it will be helpful to you.
EachRowEditor.java

import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;

public class EachRowEditor implements TableCellEditor {
  protected Hashtable editors; //Hashtable
  protected TableCellEditor editor, defaultEditor; //Editor
  JTable table; //This variable does not seem to be used

  public EachRowEditor(JTable table) {
    this.table = table;
    editors = new Hashtable();
    defaultEditor = new DefaultCellEditor(new JTextField()); //Use JTextField to construct the editor
  }

  public void setEditorAt(int row, TableCellEditor editor) {//Key
    editors.put(new Integer(row),editor); //Specify the editor to join the hash table
  }

  public Component getTableCellEditorComponent(JTable table,
      Object value, boolean isSelected, int row, int column) {

    return editor.getTableCellEditorComponent(table,
             value, isSelected, row, column);
  }

  public Object getCellEditorValue() {
    return editor.getCellEditorValue();
  }
  public boolean stopCellEditing() {
    return editor.stopCellEditing();
  }
  public void cancelCellEditing() {
    editor.cancelCellEditing();
  }
  public boolean isCellEditable(EventObject anEvent) {
    selectEditor((MouseEvent)anEvent);
    return editor.isCellEditable(anEvent);
  }
  public void addCellEditorListener(CellEditorListener l) {
    editor.addCellEditorListener(l);
  }
  public void removeCellEditorListener(CellEditorListener l) {
    editor.removeCellEditorListener(l);
  }
  public boolean shouldSelectCell(EventObject anEvent) {
    selectEditor((MouseEvent)anEvent);
    return editor.shouldSelectCell(anEvent);
  }

  protected void selectEditor(MouseEvent e) {//I don’t understand this
    int row;
    if (e == null) {
      row = table.getSelectionModel().getAnchorSelectionIndex();
    } else {
      row = table.rowAtPoint(e.getPoint());
    }
    editor = (TableCellEditor)editors.get(new Integer(row));
    if (editor == null) {
      editor = defaultEditor;
    }
  }
}
Set up with the following methods:
EachRowEditor rowEditor = new EachRowEditor(JTable); //The parameter of JTable seems useless, null should work too
rowEditor.setEditorAt(row number, new DefaultCellEditor(jComboBox1)); //Use jComboBox1 to construct the editor and specify the row
    jTable1.getColumnModel().getColumn(column number).setCellEditor(rowEditor); //Set the editor

firezq

The "row number" and "column number" above are int type, and the two ints specify the cell you want