JTable设置行背景颜色及实现打印功能的示例代码精品资料.doc

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1、JTable设置行背景颜色及实现打印功能的示例代码2008-01-14 15:24之前JAVA图形化编程一直用得很少，最近应朋友需要理事了两个.java文件，用于实现JTable设置行背景颜色及实现打印功能，相应示例代码如下：JAVA文件一，PlanetTable.classimport java.awt.BorderLayout;import java.awt.Color;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.

2、swing.JFrame;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.JTable;/* 本类为JTable一个简单应用，实现了JTable的行颜色设置及表格的打印功能* */public class PlanetTable public static void main(String args) JFrame frame = new PlanetTableFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); fra

3、me.setVisible(true);class PlanetTableFrame extends JFrame public PlanetTableFrame() / 用于控制每一行颜色的数组 String color = H, A, F, E, W ; setTitle(PlanetTable); setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT); / 定义JTable,实例成自己扩展的JTable类，并传入用于设定颜色的数组 final JTable table = new StyleTable(cells, columnNames, color); / 下

4、面这行代码可实现相邻两行颜色交替的效果,注意与上一行的区别/ final JTable table = new StyleTable(cells, columnNames); add(new JScrollPane(table), BorderLayout.CENTER); JButton printButton = new JButton(Print); printButton.addActionListener(new ActionListener() public void actionPerformed(ActionEvent event) try table.print(); cat

5、ch (java.awt.print.PrinterException e) e.printStackTrace(); ); JPanel buttonPanel = new JPanel(); buttonPanel.add(printButton); add(buttonPanel, BorderLayout.SOUTH);private Object cells = Mercury, new Double(2440.0), new Integer(0), new Boolean(false), Color.yellow , Venus, new Double(60520.0), new

6、Integer(0), new Boolean(false), Color.yellow , Earth, new Double(6378.0), new Integer(1), new Boolean(false), Color.blue , Mars, new Double(3397.0), new Integer(2), new Boolean(false), Color.red , Jupiter, new Double(71492.0), new Integer(16), new Boolean(false), Color.orange ;private String columnN

7、ames = Planet, Radius, Moons, Gaseous, Color ;private static final int DEFAULT_WIDTH = 400;private static final int DEFAULT_HEIGHT = 200;下面的类文件是实现颜色控制的核心所在，对于需要有背景颜色设定的表格只需在实例化JTable对象处，实例成StyleTable即可，注意前面绿色背景的文字。JAVA文件二，StyleTable .classimport java.awt.Color;import java.awt.Component;import javax.

8、swing.JTable;import javax.swing.table.DefaultTableCellRenderer;import javax.swing.table.TableColumn;import javax.swing.table.TableColumnModel;/* 本类实现了对JTable颜色的控制，提供了两套方案： * 1.实现了表格行两种颜色交替的效果 * 2.实现了用一个控制颜色的字符串数组来设置所对应行的颜色* * author Sidney* version 1.0 (2008-1-14)*/public class StyleTable extends JT

9、able /* 用于设定行颜色的数组*/private String color = null;public StyleTable() super();public StyleTable(Object rowData, Object columnNames) super(rowData, columnNames); paintRow();public StyleTable(Object rowData, Object columnNames, String color) super(rowData, columnNames); this.color = color; paintColorRow

10、();/* 根据color数组中相应字符串所表示的颜色来设置某行的颜色，注意，JTable中可以对列进行整体操作* 而无法对行进行整体操作，故设置行颜色实际上是逐列地设置该行所有单元格的颜色。*/public void paintRow() TableColumnModel tcm = this.getColumnModel(); for (int i = 0, n = tcm.getColumnCount(); i n; i+) TableColumn tc = tcm.getColumn(i); tc.setCellRenderer(new RowRenderer(); public vo

11、id paintColorRow() TableColumnModel tcm = this.getColumnModel(); for (int i = 0, n = tcm.getColumnCount(); i n; i+) TableColumn tc = tcm.getColumn(i); tc.setCellRenderer(new RowColorRenderer(); /* 定义内部类，用于控制单元格颜色，每两行颜色相间，本类中定义为蓝色和绿色。* * author Sidney* */private class RowRenderer extends DefaultTable

12、CellRenderer public Component getTableCellRendererComponent(JTable t, Object value, boolean isSelected, boolean hasFocus, int row, int column) /设置奇偶行的背景色，可在此根据需要进行修改 if (row % 2 = 0) setBackground(Color.BLUE); else setBackground(Color.GREEN); return super.getTableCellRendererComponent(t, value, isSe

13、lected, hasFocus, row, column); /* 定义内部类，可根据一个指定字符串数组来设置对应行的背景色* * author Sidney* */private class RowColorRenderer extends DefaultTableCellRenderer public Component getTableCellRendererComponent(JTable t, Object value, boolean isSelected, boolean hasFocus, int row, int column) /分支判断条件可根据需要进行修改 if (c

14、olorrow.trim().equals(E) setBackground(Color.RED); else if (colorrow.trim().equals(H) setBackground(Color.CYAN); else if (colorrow.trim().equals(A) setBackground(Color.BLUE); else if (colorrow.trim().equals(F) setBackground(Color.ORANGE); else setBackground(Color.WHITE); return super.getTableCellRen

15、dererComponent(t, value, isSelected, hasFocus, row, column); 我是刚学Swing的，请大哥们帮帮小弟！很急，我已经郁闷3天了！ JTable当我选中一行时，就改变这一行的背景色！问题点数：50回复次数：5 修改 删除 举报 引用 回复 加为好友 发送私信 在线聊天 diggywang 等级:发表于：2007-04-26 21:21:571楼得分:13用tablecellrenderer修改 删除 举报 引用 回复 加为好友 发送私信 在线聊天 chuan122345 等级:发表于：2007-04-27 12:29:052楼得分:13p

16、ublic static void makeFace(JTable table) try DefaultTableCellRenderer tcr = new DefaultTableCellRenderer() public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) if (row % 2 = 0) setBackground(Color.white); /设置奇数行底色 else

17、if (row % 2 = 1) setBackground(new Color(206, 231, 255); /设置偶数行底色 return super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); ; for (int i = 0; i table.getColumnCount(); i+) table.getColumn(table.getColumnName(i).setCellRenderer(tcr); catch (Exception ex) ex.printSta

18、ckTrace(); 修改 删除 举报 引用 回复 加为好友 发送私信 在线聊天 chuan122345 等级:发表于：2007-04-27 12:31:463楼得分:0主要是写个REANDER,我以前做过这效果 publicclass JTableCellRenderer extends JPanel implements TableCellRenderer private JComponent component = null; privatestaticfinallongserialVersionUID = 4814418916385836965L; /*透明？*/ privateboo

19、leanisOpaque = true; public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) /*透明？*/ isOpaque = table.isOpaque(); /*获得TableModel*/ MyTableModel myTableModel = (MyTableModel)table.getModel(); boolean canSelected = true; Lis

20、t canSelectedList = myTableModel.getCanBeSelectedModel(); if(canSelectedList != null) if(row canSelectedList.size() if(!(Boolean)canSelectedList.get(row).booleanValue() canSelected = false; else canSelected = false; /*设定用于显示Cell的panel*/ JPanel cellPanel = new JPanel(); /*绘制Cell*/ getCell(table,cellP

21、anel,row,canSelected,isSelected); int colorChangeFlag = row/myTableModel.getDiv(); /*是否透明*/ if(isOpaque) if(colorChangeFlag % 2 = 0) cellPanel.setBackground(myTableModel.getRowBackgroundColor(); else cellPanel.setBackground(myTableModel.getFirstRowBackgroundColor(); /*设定是否透明 */ cellPanel.setOpaque(i

22、sOpaque); if(isSelected) cellPanel.setBackground(table.getSelectionBackground(); rePaintComponents(); / MainRun.middlePanel.repaint(); return cellPanel; privatevoid getCell(JTable table,JPanel cellPanel,int row, boolean canSelected,boolean isSelected) /*设定对齐方式*/ cellPanel.setLayout(new FlowLayout(0,

23、0,0); /*获得TableModel*/ MyTableModel myTableModel = (MyTableModel)table.getModel(); /*获得列数*/ int col = myTableModel.getCol(); for(int i = 0; i col ; i+ ) /*获得某个单元格*/ Object cellObject = myTableModel.getValueAt(row,i); /*/ JComponent tempLabel = null; /*String*/ if(cellObject instanceof String) tempLa

24、bel = new JLabel(String)cellObject); if(canSelected) Color cellColor = myTableModel.getColor(row,i); tempLabel.setForeground(cellColor); else tempLabel.setForeground(Color.gray); if(isSelected) tempLabel.setForeground(table.getSelectionForeground(); /*Icon*/ elseif(cellObject instanceof ImageIcon) t

25、empLabel = new JLabel(ImageIcon)cellObject); /*TextBox*/ elseif(cellObject instanceof JTextField) tempLabel = new JTextField(); else tempLabel = new JLabel(); if(cellObject instanceof JTextField) else /*对齐方式*/ switch(myTableModel.getCellLayout(i) /*左*/ case 0: (JLabel)tempLabel). setHorizontalAlignm

26、ent(JLabel.LEFT); break; /*中*/ case 1: (JLabel)tempLabel). setHorizontalAlignment(JLabel.CENTER); break; /*右*/ case 2: (JLabel)tempLabel). setHorizontalAlignment(JLabel.RIGHT); break; /*宽度设定*/ int width = myTableModel.getWidth(row,i); /*size设定*/ tempLabel.setPreferredSize (new Dimension(width,table.

27、getRowHeight(); /*字体设定*/ tempLabel.setFont(table.getFont(); /*设定是否透明*/ cellPanel.add(tempLabel); protectedvoid rePaintComponents() if (component != null) for (int i = 0; i component.length; i+) if (componenti != null) componenti.repaint(); public JComponent getComponent() returncomponent; publicvoid setComponent(JComponent c