我一直在尝试解决这个问题,我已经检查了文档(如果您注意到表格代码来自那里),我只是无法弄清楚。我使用了错误的容器还是需要对其进行尺寸标注?如果是这样,怎么做?
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Invest extends JFrame {
public static void main(String[] args) {
demolayout frame = new demolayout();
frame.setTitle("Financial Calculator");
JPanel toppanel = new JPanel(new GridLayout(3, 3, 2, 2));
frame.add(toppanel, BorderLayout.NORTH);
String[] columnNames = {"Entry", "Year", "Year", "Year", "Year"};
Object[][] data = {{"Period Ending:", "2011", "Snowboarding", new Integer(5), new Boolean(false)},
{"Values in Millions of $", "12-31", "Rowing", new Integer(3), new Boolean(true)},
{"Revenue:", "46,542", "Knitting", new Integer(2), new Boolean(false)},
{"Revenue Other:", "-", "Speed reading", new Integer(20), new Boolean(true)},
{"Total Revenue:", "46,542", "Speed reading", new Integer(20), new Boolean(true)},
{"Cost of Revenue:", "18,216", "Speed reading", new Integer(20), new Boolean(true)},
{"Gross Profit:", "28,326", "Speed reading", new Integer(20), new Boolean(true)},
{"Selling Gen. Admin Expenses:", "12,111", "Speed reading", new Integer(20), new Boolean(true)},
{"Research & Development:", "-", "Speed reading", new Integer(20), new Boolean(true)},
{"Depreciation/Amortization:", "-", "Speed reading", new Integer(20), new Boolean(true)},
{"Total Operating Expense:", "154", "Speed reading", new Integer(20), new Boolean(true)},
{"Operating Income:", "35,810", "Speed reading", new Integer(20), new Boolean(true)},
{"Interest Income (Exp.), Net NonOp:", "10,732", "Speed reading", new Integer(20), new Boolean(true)},
{"Interest/Invest Inc. Non-Operating:", "White", "Speed reading", new Integer(20), new Boolean(true)},
{"Interest Inc. Net Non-Operating:", "White", "Speed reading", new Integer(20), new Boolean(true)},
{"Gain/Loss on Sale of Assets:", "White", "Speed reading", new Integer(20), new Boolean(true)},
{"Other, Net:", "White", "Speed reading", new Integer(20), new Boolean(true)},
{"Net Income Before Taxes:", "White", "Speed reading", new Integer(20), new Boolean(true)},
{"Income Tax - Total:", "White", "Speed reading", new Integer(20), new Boolean(true)},
{"Minority Interest:", "Brown", "Pool", new Integer(10), new Boolean(false)},
{"Equity In Affiliates:", "Brown", "Pool", new Integer(10), new Boolean(false)},
{"Accounting Change:", "Brown", "Pool", new Integer(10), new Boolean(false)},
{"Discontinued Operations:", "Brown", "Pool", new Integer(10), new Boolean(false)},
{"Extraordinary Items:", "Brown", "Pool", new Integer(10), new Boolean(false)},
{"Net Income:", "Brown", "Pool", new Integer(10), new Boolean(false)}};
JTable table = new JTable(data, columnNames);
JScrollPane scrollPane = new JScrollPane(table);
toppanel.add(scrollPane);
JPanel bottompanel = new JPanel(new FlowLayout());
bottompanel.setBackground(new Color(150, 150, 150));
JButton compute = new JButton("Compute Ratios");
bottompanel.add(compute);
frame.add(bottompanel, BorderLayout.SOUTH);
frame.setSize(800, 500);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}