[Java] JTable für Bilder und Texte

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

public class MyMixedTable extends JTable 
{

 /* constructor */
 public MyMixedTable() 
 {
 super();
 setDefaultRenderer(Object.class, new MyButtonCellRenderer());
 /*...*/
 }
 
 /* inner class */
 public class MyButtonCellRenderer extends JButton implements TableCellRenderer 
 {
 
 public Component getTableCellRendererComponent(JTable table,
 Object value,
 boolean isSelected,
 boolean hasFocus,
 int row, int column) 
 {
 
 setBorder(BorderFactory.createEmptyBorder());
 setFocusPainted(false);
 if ( value.getClass().getName().equals("String") ) {
 setText( (String)value );
 }
 if ( value.getClass().getName().equals("Image") ) {
 setIcon(new ImageIcon((Image)value));
 }
 return this;
 }
 }
}

import java.awt.Component;
import java.awt.Image;

import javax.swing.ImageIcon;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;

public class ImageCellRenderer extends DefaultTableCellRenderer
{


 public Component getTableCellRendererComponent(JTable table, Object value,
 boolean isSelected, boolean hasFocus, int row, int column) 
 {
 super.getTableCellRendererComponent(table, value, isSelected,
 hasFocus, row, column);
 

 Image image = (Image) value;
 this.setIcon(new ImageIcon( image ));

 
 
 return this;
 }
}

if ( iShouldDisplayIcon) {
 setIcon(myImageIcon);
}
else {
 setIcon(null);
}



setting the icon to null is very important, otherwise all cells will display the icon. This is because, the same renderer is used for each cell. It draws the label then moves onto the next cell, so if the label contains an image it will draw it.
This will explain why renderer works for the whole column and not an individual cell.

try {
 dasbild = Toolkit.getDefaultToolkit().getImage(new URL("urldesbildes.jpeg"));
 } catch (MalformedURLException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 
 Image dasbildscaled = dasbild.getScaledInstance(dasbild .getWidth(null), 60, Image.SCALE_SMOOTH);
 
 if(dascover != null)
 mp3_Verwaltung.tabmodel.setValueAt(dasbildscaled , row, 1);