Java Swing JTable，表头多行显示示例代码

àì夳堔傛蜴生んèń 2021-10-12 21:29 343阅读 0赞

/*******************************************************************************
     * @project: IDS_AutoView_2019
     * @package: com.acconsys.ids.table
     * @file: T.java
     * @author: zhangpei
     * @created: 2019-8-19
     * @purpose:
     * 
     * @version: 1.0
     * 
     * Revision History at the end of file.
     * 
     * Copyright 2019 esoon-tech All rights reserved.
     ******************************************************************************/
    
    /**   
    * @Title: T.java 
    * @Package com.acconsys.ids.table 
    * @Description: TODO(用一句话描述该文件做什么) 
    * @author Burns[张沛]   
    * @date 2019-8-19 上午9:41:16 
    * @version V1.0   
    */
    package com.acconsys.ids.table;
    
    /** 
     * @ClassName: T 
     * @Description: TODO(这里用一句话描述这个类的作用) 
     * @author Burns[张沛] 
     * @date 2019-8-19 上午9:41:16 
     *  
     */
    import java.awt.Component;
    import java.awt.event.WindowAdapter;
    import java.awt.event.WindowEvent;
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.StringReader;
    import java.util.Enumeration;
    import java.util.Vector;
    
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JList;
    import javax.swing.JScrollPane;
    import javax.swing.JTable;
    import javax.swing.ListCellRenderer;
    import javax.swing.UIManager;
    import javax.swing.table.DefaultTableModel;
    import javax.swing.table.TableCellRenderer;
    import javax.swing.table.TableColumn;
    
    /**
     * @version 1.0 11/09/98
     */
    public class MultiLineHeaderExample extends JFrame {
      MultiLineHeaderExample() {
        super("Multi-Line Header Example");
    
        DefaultTableModel dm = new DefaultTableModel();
        dm.setDataVector(
            new Object[][] { { "a", "b", "c" }, { "A", "B", "C" } },
            new Object[] { "1st\nalpha", "2nd\nbeta", "3rd\ngamma" });
    
        JTable table = new JTable(dm);
        MultiLineHeaderRenderer renderer = new MultiLineHeaderRenderer();
        Enumeration e = table.getColumnModel().getColumns();
        while (e.hasMoreElements()) {
          ((TableColumn) e.nextElement()).setHeaderRenderer(renderer);
        }
        JScrollPane scroll = new JScrollPane(table);
        getContentPane().add(scroll);
        setSize(400, 110);
        setVisible(true);
      }
    
      public static void main(String[] args) {
        MultiLineHeaderExample frame = new MultiLineHeaderExample();
        frame.addWindowListener(new WindowAdapter() {
          public void windowClosing(WindowEvent e) {
            System.exit(0);
          }
        });
      }
    }
    
    /**
     * @version 1.0 11/09/98
     */
    
    class MultiLineHeaderRenderer extends JList implements TableCellRenderer {
      public MultiLineHeaderRenderer() {
        setOpaque(true);
        setForeground(UIManager.getColor("TableHeader.foreground"));
        setBackground(UIManager.getColor("TableHeader.background"));
        setBorder(UIManager.getBorder("TableHeader.cellBorder"));
        ListCellRenderer renderer = getCellRenderer();
        ((JLabel) renderer).setHorizontalAlignment(JLabel.CENTER);
        setCellRenderer(renderer);
      }
    
      public Component getTableCellRendererComponent(JTable table, Object value,
          boolean isSelected, boolean hasFocus, int row, int column) {
        setFont(table.getFont());
        String str = (value == null) ? "" : value.toString();
        BufferedReader br = new BufferedReader(new StringReader(str));
        String line;
        Vector v = new Vector();
        try {
          while ((line = br.readLine()) != null) {
            v.addElement(line);
          }
        } catch (IOException ex) {
          ex.printStackTrace();
        }
        setListData(v);
        return this;
      }
    }
    
    
    /*******************************************************************************
     * <B>Revision History</B><BR>
     * [type 'revision' and press Alt + / to insert revision block]<BR>
     * 
     * 
     * 
     * Copyright 2019 esoon-tech All rights reserved.
     ******************************************************************************/

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[2019081914402438.png]: /images/20211013/1540805c3ce74c9aa2a24a72055728c2.png