着色jTable行 [英] Coloring jTable row

问题描述

我想在jTable中为特定行着色..我使用此代码对列进行着色，

I want to color specific rows in jTable..i did it for columns by using this code,

private class CustomCellRenderer extends DefaultTableCellRenderer {

/* (non-Javadoc)
 * @see    
javax.swing.table.DefaultTableCellRenderer#getTableCellRendererComponent(javax.swing.JTable, java.lang.Object, boolean, boolean, int, int)
 */

    @Override
public Component  getTableCellRendererComponent(JTable table, Object value,boolean isSelected, boolean hasFocus, int row, int column) {

  Component rendererComp = super.getTableCellRendererComponent(table, value, isSelected, hasFocus,row, column);

//Set foreground color
// rendererComp.setForeground(Color.red);
//Set background color
  rendererComp .setBackground(Color.pink);

 return rendererComp ;
 }

}

我用上面的代码调用，

 jTable1.getColumnModel().getColumn(3).setCellRenderer(new CustomCellRenderer());

但是我想对jTable中的行做同样的事情。没有getColumnModel（）或getColumn（ ）在行的情况下。那么这样做的替代方法是什么？我使用Java Swing在Netbeans中进行..

But i want to do the same for rows in jTable..There's no getColumnModel() or getColumn() in the case of rows..So what's the alternate way for doing that? I am doing it in Netbeans by using Java Swing..

推荐答案

这是一个关于如何组合列颜色和行颜色。您基本上在TableCellRenderer中执行测试，以查看背景是否应该是一种颜色。

Here is an example on how you can combine both column colors and row color. You basically perform tests in the TableCellRenderer to see if the background should be of one color or another.

import java.awt.Color;
import java.awt.Component;
import java.util.Enumeration;
import java.util.Vector;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;

public class TestTable {

    public class MyTableCellRenderer extends DefaultTableCellRenderer implements TableCellRenderer {

        @Override
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
            setBackground(null);
            super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
            setText(String.valueOf(value));
            boolean interestingRow = row % 5 == 2;
            boolean secondColumn = column == 1;
            if (interestingRow && secondColumn) {
                setBackground(Color.ORANGE);
            } else if (interestingRow) {
                setBackground(Color.YELLOW);
            } else if (secondColumn) {
                setBackground(Color.RED);
            }
            return this;
        }

    }

    private JFrame f;
    private JTable table;

    protected void initUI() {
        Vector<Vector<Object>> data = new Vector<Vector<Object>>();
        Vector<String> columNames = new Vector<String>();
        columNames.add("Col 0");
        columNames.add("Col 1");
        columNames.add("Col 2");
        for (int i = 0; i < 20; i++) {
            Vector<Object> v = new Vector<Object>();
            v.add(i % 3 == 0 ? "Hello" : "World");
            v.add("Some data in row " + (i + 1));
            v.add("Some other data in row " + (i + 1));
            data.add(v);
        }
        table = new JTable(new DefaultTableModel(data, columNames));
        Enumeration<TableColumn> en = table.getColumnModel().getColumns();
        while (en.hasMoreElements()) {
            TableColumn tc = en.nextElement();
            tc.setCellRenderer(new MyTableCellRenderer());
        }
        f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setLocationRelativeTo(null);
        f.add(new JScrollPane(table));
        f.pack();
        f.setVisible(true);

    }

    public static void main(String[] args) {

        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                new TestTable().initUI();
            }
        });
    }

}

这篇关于着色jTable行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！