JTable 单元格中的图像显示
我使用以下程序使用 java 类创建 JTable。如果我从选项窗格中获取 warnIcon,infoIcon 的图像,它会正确显示。但是,如果我从系统添加图像,它不会显示在表中。显示空白区域而不是我的图像。如何从该表中的文件(例如 A.jpg)中绘制图像?
package pointer;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.*;
import javax.swing.plaf.OptionPaneUI;
import javax.swing.table.*;
import sun.swing.ImageIconUIResource;
public class TableIcon1 extends JFrame {
private JTable table;
private int pHeight = 60;
public TableIcon1() {
ImageIcon testIcon = new ImageIcon("A.jpg");
// ImageIcon errorIcon = (ImageIcon) UIManager.getIcon("OptionPane.errorIcon");
ImageIcon infoIcon = (ImageIcon) UIManager.getIcon("OptionPane.informationIcon");
ImageIcon warnIcon = (ImageIcon) UIManager.getIcon("OptionPane.warningIcon");
String[] columnNames = {"Picture", "Description"};
Object[][] data = {{testIcon , "About"}, {infoIcon, "Add"}, {warnIcon, "Copy"},};
DefaultTableModel model = new DefaultTableModel(data, columnNames);
table = new JTable(model) {
@Override
public Class getColumnClass(int column) {
return getValueAt(2, column).getClass();
}
};
table.setRowHeight(pHeight);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
JScrollPane scrollPane = new JScrollPane(table);
add(scrollPane, BorderLayout.CENTER);
}
public static void main(String[] args) {
TableIcon1 frame = new TableIcon1();
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.setLocation(150, 150);
frame.pack();
frame.setVisible(true);
}
}
I use the following program for creating JTable using java class. If I get the images for warnIcon,infoIcon from optionpane it displays properly. However, if I add image from my system it doesn't display in table. A blank space is displayed instead of my image. How can I draw an image from file (e.g. A.jpg) in that table?
package pointer;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.*;
import javax.swing.plaf.OptionPaneUI;
import javax.swing.table.*;
import sun.swing.ImageIconUIResource;
public class TableIcon1 extends JFrame {
private JTable table;
private int pHeight = 60;
public TableIcon1() {
ImageIcon testIcon = new ImageIcon("A.jpg");
// ImageIcon errorIcon = (ImageIcon) UIManager.getIcon("OptionPane.errorIcon");
ImageIcon infoIcon = (ImageIcon) UIManager.getIcon("OptionPane.informationIcon");
ImageIcon warnIcon = (ImageIcon) UIManager.getIcon("OptionPane.warningIcon");
String[] columnNames = {"Picture", "Description"};
Object[][] data = {{testIcon , "About"}, {infoIcon, "Add"}, {warnIcon, "Copy"},};
DefaultTableModel model = new DefaultTableModel(data, columnNames);
table = new JTable(model) {
@Override
public Class getColumnClass(int column) {
return getValueAt(2, column).getClass();
}
};
table.setRowHeight(pHeight);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
JScrollPane scrollPane = new JScrollPane(table);
add(scrollPane, BorderLayout.CENTER);
}
public static void main(String[] args) {
TableIcon1 frame = new TableIcon1();
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.setLocation(150, 150);
frame.pack();
frame.setVisible(true);
}
}
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。

绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(1)
图标很常见,永远不会因错误路径或空值而返回任何异常,您必须进行测试,
最好的方法是在您的 Java 项目中创建一个名为
icons
的新文件夹。 > 然后复制您的A.jpg Icon
然后您只能调用
Icon is common that never returns any exceptions for wrong path or null value, you have to test fro that
best of way would be create a new folder with name
icons
in yourJava project
and there copy yourA.jpg Icon
then you can only call