修改JTable中任意单元格颜色

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修改JTable中任意单元格颜色

从网上找了一个隔行变色的JTABLE例子，修改了一下。确切的说是使得某一或某些单元格颜色保持不变，

而改其他单元格的颜色。

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

public class RoundColorTable extends JFrame {
    private String[] colname = {"第1列","第2列","第3列","第4列","第5列"}; //表头信息
    private String[][] data = new String[10][5]; //表内容

    //界面组件----------------------//
    private JScrollPane scroPanel = new JScrollPane(); //中底层滚动面板
    private DefaultTableModel model; //列表默认TableModel
    private JTable table;
     int r=0,c=1;//      用于控制变色区域

/**
* 构造方法 SelectionDemo()
*/
    public RoundColorTable() {
        makeFace();
        addListener();
        showFace();
    }

/**
* 方法: 界面构建 makeFace()
*/
    private void makeFace() {

        //表内容数组 data[][] 赋值------------//
        for(int i = 0; i < 10; i++) {
            for(int j = 0; j < 5; j++) {
                data[i][j] = "( " + (j+1) + ", " + (i+1) + " )";
            }
        }

        table = new JTable(model = new DefaultTableModel(data,colname));
        table.setEnabled(false);

        //新建列表现器------------------------//
        DefaultTableCellRenderer tcr = new DefaultTableCellRenderer() {
            public Component getTableCellRendererComponent(JTable table,
                          Object value, boolean isSelected, boolean hasFocus,
                                                     int row, int column) {
                Component   cell   =   super.getTableCellRendererComponent
                        (table,   value,   isSelected,   hasFocus,   row,   column);
                if(row==r&&column==c&&cell.isBackgroundSet())           //设置变色的单元格
                  cell.setBackground(   Color.GRAY);
                  return   cell;
            }
        };
        //设置列表现器------------------------//
        for(int i = 0; i < colname.length; i++) {
            table.getColumn(colname[i]).setCellRenderer(tcr);
        }


        scroPanel.getViewport().setBackground(Color.white);
        scroPanel.getViewport().add(table);

        //总体界面布局------------------------//
        getContentPane().add(scroPanel, BorderLayout.CENTER);
    }

/**
* 方法: 界面显示 showFace()
*/
    private void showFace() {
        setSize(500,400);
        Toolkit tmpTK = Toolkit.getDefaultToolkit();
        Dimension dime = tmpTK.getScreenSize();

        setLocation(200,300);
        setVisible(true);
        //show();
    }

/**
* 方法: 添加事件监听 addListener()
*/
    private void addListener() {
        this.addWindowListener(new WindowAdapter(){ //添加窗口关闭事件
            public void windowClosing(WindowEvent e){
                setVisible(false);
                dispose();
                System.exit(0);
            }
        });
    }


/**
* 程序入口 main()
*/
    public static void main(String args[]) {
        //获取设置系统风格-------------------//
        try {
            String laf = UIManager.getSystemLookAndFeelClassName();
            UIManager.setLookAndFeel(laf);
        } catch (Exception e) {}

        new RoundColorTable();
    }
}