swing - 如何在 java swing 中设置样式？

Question

我是 Java 的新手，我想创建一个程序，但在设计它的样式时遇到了一些问题。我想要一个具有以下结构的简单程序:

第一行应该是带有文件和关于按钮的菜单栏。在第二行我应该有一个文本:“url:”，一个文本输入(用于 url)和一个文本输入后的“go”按钮。在第三行，我需要一个包含 3 个选项卡的选项卡式菜单:tab1、tab2、tab3。

直到窗口底部的其余内容应该是一个有行和列的表格，如果内容太大或者窗口比表格大而不应该填充，它应该有垂直和水平滚动条整个窗口。

目前我只有这段代码:

主要.java :

import javax.swing.*;

public class main {

    public static void main(String args[]){

        JFrame frame = new JFrame("SEO Tool");      
        frame.setSize(500,300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setExtendedState(frame.getExtendedState() | JFrame.MAXIMIZED_BOTH);
        frame.setVisible(true);

        menubar menubar = new menubar(); 
        menubar.createmenubar_site(frame);

        tabs tabs = new tabs();
        tabs.createtabs(frame); 
    }
}

tabs.java :

import javax.swing.*;
import javax.swing.BoxLayout;

public class tabs {

    public void createtabs(JFrame frame){

        JLabel sitelabel = new JLabel("A");

        JPanel sitepanel = new JPanel();
        sitepanel.setLayout(new BoxLayout(sitepanel, BoxLayout.X_AXIS));
        sitepanel.setSize(400,400);
        sitepanel.add(sitelabel);
        frame.add(sitepanel);

        JPanel panel = new JPanel();
        panel.setLayout(new BoxLayout(panel, BoxLayout.PAGE_AXIS));
        //panel.setBounds();
        frame.add(panel);

        JTabbedPane tabs = new JTabbedPane();

        JPanel yoursite = new JPanel();
        JPanel yourcompetitors = new JPanel();

        tabs.addTab("Your site",yoursite);
        tabs.addTab("Your competitors",yourcompetitors);

        panel.add(tabs);        

        sitetab sitetab = new sitetab();
        sitetab.createcontent(yoursite);    
    }
}

菜单栏.java :

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

public class menubar {

    public void createmenubar_site(JFrame frame){

        JMenuBar menubar = new JMenuBar();
        frame.setJMenuBar(menubar);

        JMenu file = new JMenu("File");
        menubar.add(file);

        JMenuItem newproject = new JMenuItem("New Project");
        newproject .addActionListener(new click_newproject());
        file.add(newproject);
    }

    static class click_newproject implements ActionListener {

        public void actionPerformed (ActionEvent e){            
        }
    }
}

Answer 1

这就是我所理解的您所描述的布局示例(我使用 NetBeans 所见即所得 - 很好的工具，但无论如何您都应该了解布局)。它不使用您的代码，但可以让您基本了解如何完成它。我建议您在此处阅读有关布局的更多信息 http://download.oracle.com/javase/tutorial/uiswing/layout/using.html .

private void initComponents() {

    urlPanel = new javax.swing.JPanel();
    urlLabel = new javax.swing.JLabel();
    urlField = new javax.swing.JTextField();
    urlButton = new javax.swing.JButton();
    tabbedPane = new javax.swing.JTabbedPane();
    tab1 = new javax.swing.JPanel();
    tab2 = new javax.swing.JPanel();
    tab3 = new javax.swing.JPanel();
    tableScrollPane = new javax.swing.JScrollPane();
    table = new javax.swing.JTable();
    mainMenu = new javax.swing.JMenuBar();
    fileMenu = new javax.swing.JMenu();
    aboutMenu = new javax.swing.JMenu();

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
    getContentPane().setLayout(new javax.swing.BoxLayout(getContentPane(), javax.swing.BoxLayout.Y_AXIS));

    urlPanel.setLayout(new java.awt.BorderLayout());

    urlLabel.setText("url:");
    urlPanel.add(urlLabel, java.awt.BorderLayout.WEST);

    urlField.setText("http://google.com");
    urlPanel.add(urlField, java.awt.BorderLayout.CENTER);

    urlButton.setText("Go");
    urlPanel.add(urlButton, java.awt.BorderLayout.EAST);

    getContentPane().add(urlPanel);

    javax.swing.GroupLayout tab1Layout = new javax.swing.GroupLayout(tab1);
    tab1.setLayout(tab1Layout);
    tab1Layout.setHorizontalGroup(
        tab1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGap(0, 395, Short.MAX_VALUE)
    );
    tab1Layout.setVerticalGroup(
        tab1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGap(0, 32, Short.MAX_VALUE)
    );

    tabbedPane.addTab("tab1", tab1);

    javax.swing.GroupLayout tab2Layout = new javax.swing.GroupLayout(tab2);
    tab2.setLayout(tab2Layout);
    tab2Layout.setHorizontalGroup(
        tab2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGap(0, 395, Short.MAX_VALUE)
    );
    tab2Layout.setVerticalGroup(
        tab2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGap(0, 32, Short.MAX_VALUE)
    );

    tabbedPane.addTab("tab2", tab2);

    javax.swing.GroupLayout tab3Layout = new javax.swing.GroupLayout(tab3);
    tab3.setLayout(tab3Layout);
    tab3Layout.setHorizontalGroup(
        tab3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGap(0, 395, Short.MAX_VALUE)
    );
    tab3Layout.setVerticalGroup(
        tab3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGap(0, 32, Short.MAX_VALUE)
    );

    tabbedPane.addTab("tab3", tab3);

    getContentPane().add(tabbedPane);

    tableScrollPane.setViewportView(table);

    getContentPane().add(tableScrollPane);

    fileMenu.setText("File");
    mainMenu.add(fileMenu);

    aboutMenu.setText("About");
    mainMenu.add(aboutMenu);

    setJMenuBar(mainMenu);

    pack();
}