java如何更改JTable的空白颜色？

Question

我正在尝试在我的应用程序中创建一个JTable。到目前为止，我已经能够改变几乎所有我需要的设置，除了空白空间的颜色。我想更改颜色，使其与行的背景色相同。你是怎么做到的

Answer 1

import java.awt.Color;
import java.awt.Component;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;

public class TableExample {
    JFrame f;

    TableExample() {
        f = new JFrame();
        String data[][] = { { "101", "Amit", "670000" }, { "102", "Jai", "780000" }, { "101", "Sachin", "700000" } };
        String column[] = { "ID", "NAME", "SALARY" };
        JTable jt = new JTable(data, column);

        jt.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() {// alternate background color for rows
            public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
                    boolean hasFocus, int row, int column) {
                Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
                if (!isSelected)
                    c.setBackground(row % 2 == 0 ? Color.white : Color.lightGray);
                return c;
            };
        });

        jt.setBackground(Color.red);
        jt.setFillsViewportHeight(true);
        jt.setBounds(30, 40, 200, 300);
        JScrollPane sp = new JScrollPane(jt);
        f.add(sp);
        f.setSize(300, 400);
        f.setVisible(true);
    }

    public static void main(String[] args) {
        new TableExample();
    }
}

Answer 2

只需检查jtable属性中的不透明部分