java怎么设置工具栏

private JMenuBar createJMenuBar(Action[] actions){//创建菜单栏

JMenuBar menubar = new JMenuBar()//实例化菜单栏

JMenu menuFile = new JMenu("文件")

JMenu menuAbout = new JMenu("帮助")

menuAbout.add(new JMenuItem(actions[0]))

menuFile.add(new JMenuItem(actions[1]))

menubar.add(menuFile)//增加菜单

menubar.add(menuAbout)

return menubar

}

private JToolBar createJToolBar(Action[] actions){//创建工具条

JToolBar toolBar = new JToolBar()//实例化工具条

for(int i=0i<actions.lengthi++){

JButton bt = new JButton(actions[i])

bt.setRequestFocusEnabled(false)

//设置不需要焦点

toolBar.add(bt)//增加按钮到工具栏

}

return toolBar//返回工具栏

}

//以下是我做项目的完整代码，你参考一下

/**************************************

* Title:数据库综合 *** 作

* Description: text类

* date :2008-7-22

* author : yangcong

***************************************/

package framejava

import java.awt.*

import java.awt.event.*

import java.io.*

import javax.swing.*

import javax.swing.text.*

//简单的文本编辑器

public class mainframe extends JFrame{

JPanel textPane = new JPanel()//文本窗格，编辑窗口

JLabel statusBar = new JLabel("JAVA综合 *** 作平台V1.1 杨聪制作")//状态栏

JFileChooser filechooser = new JFileChooser()//文本选择器

JButton shujuku = new JButton("数据库 *** 作")

JButton wangluo = new JButton("网络 *** 作")

JButton about = new JButton(" 关于 ")

JButton exit = new JButton(" 退出 ")

public mainframe(){ //构造函数

enableEvents(AWTEvent.WINDOW_EVENT_MASK)

try {

jbInit()

}

catch (Exception e) {

e.printStackTrace()

}

}

private void jbInit() throws Exception {

this.setTitle("JAVA综合 *** 作平台V1.1") //调用父类构造函数

Action[] actions={ //Action数组，各种 *** 作命令

new AboutAction(),

new ExitAction()

}

textPane.add(shujuku)

textPane.add(wangluo)

textPane.add(about)

textPane.add(exit)

/***********************************************************************/

shujuku.addActionListener(new mainframe_shujuku_actionAdapter(this))

shujuku.setSelected(true)

/***********************************************************************/

/***********************************************************************/

wangluo.addActionListener(new mainframe_wangluo_actionAdapter(this))

wangluo.setSelected(true)

/***********************************************************************/

about.addActionListener(actions[0])

exit.addActionListener(actions[1])

statusBar.setForeground(Color.red)

setJMenuBar(createJMenuBar(actions))

Container container= getContentPane()

container.add(createJToolBar(actions),BorderLayout.NORTH)

container.add(textPane,BorderLayout.CENTER)

container.add(statusBar,BorderLayout.SOUTH)

// mainframe m_view = new mainframe()

// m_view.pack()

// Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize()

// Dimension frameSize = m_view.getSize()

//if (frameSize.height >screenSize.height) {

// frameSize.height = screenSize.height

// }

// if (frameSize.width >screenSize.width) {

// frameSize.width = screenSize.width

// }

// m_view.setLocation( (screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2)

//

// m_view.setSize(260,200)

// m_view.setVisible(true)

setSize(260,200)

setVisible(true)

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)

//关闭窗口时退出程序

}

private JMenuBar createJMenuBar(Action[] actions){//创建菜单栏

JMenuBar menubar = new JMenuBar()//实例化菜单栏

JMenu menuFile = new JMenu("文件")

JMenu menuAbout = new JMenu("帮助")

menuAbout.add(new JMenuItem(actions[0]))

menuFile.add(new JMenuItem(actions[1]))

menubar.add(menuFile)//增加菜单

menubar.add(menuAbout)

return menubar

}

private JToolBar createJToolBar(Action[] actions){//创建工具条

JToolBar toolBar = new JToolBar()//实例化工具条

for(int i=0i<actions.lengthi++){

JButton bt = new JButton(actions[i])

bt.setRequestFocusEnabled(false)

//设置不需要焦点

toolBar.add(bt)//增加按钮到工具栏

}

return toolBar//返回工具栏

}

/**************************数据库动作 *** 作*************************************/

void shujuku_actionPerformed(ActionEvent e) {

shujuku.setSelected(false)

datamainframe d_view = new datamainframe()

d_view.pack()

Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize()

Dimension frameSize = d_view.getSize()

if (frameSize.height >screenSize.height) {

frameSize.height = screenSize.height

}

if (frameSize.width >screenSize.width) {

frameSize.width = screenSize.width

}

d_view.setLocation( (screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2)

d_view.setSize(270,190)

d_view.setVisible(true)

}

class mainframe_shujuku_actionAdapter

implements java.awt.event.ActionListener {

mainframe adaptee

mainframe_shujuku_actionAdapter(mainframe adaptee) {

this.adaptee = adaptee

}

public void actionPerformed(ActionEvent e) {

adaptee.shujuku_actionPerformed(e)

}

}

/***********************************************************************/

/********************网络动作 *** 作**************************************/

void wangluo_actionPerformed(ActionEvent e) {

wangluo.setSelected(false)

netview n_view = new netview()

n_view.pack()

Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize()

Dimension frameSize = n_view.getSize()

if (frameSize.height >screenSize.height) {

frameSize.height = screenSize.height

}

if (frameSize.width >screenSize.width) {

frameSize.width = screenSize.width

}

n_view.setLocation( (screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2)

n_view.setSize(800,700)

n_view.setVisible(true)

}

class mainframe_wangluo_actionAdapter

implements java.awt.event.ActionListener {

mainframe adaptee

mainframe_wangluo_actionAdapter(mainframe adaptee) {

this.adaptee = adaptee

}

public void actionPerformed(ActionEvent e) {

adaptee.wangluo_actionPerformed(e)

}

}

/***********************************************************************/

class ExitAction extends AbstractAction{ //退出命令

public ExitAction(){

super("退出")

}

public void actionPerformed(ActionEvent e){

System.exit(0)

}

}

class AboutAction extends AbstractAction{//关于选项命令

public AboutAction(){

super("关于")

}

public void actionPerformed(ActionEvent e){

JOptionPane.showMessageDialog(mainframe.this,"JAVA综合 *** 作平台V1.1\n"+"杨聪制作")

}

}

public static void main(String args[]){

new mainframe()

}

}

找找上面设置还是帮助的选项看看有没有回复默认设置就出来了

window里有一个show toolbar

或者window ---reset persective还原一下

代码如下：

public class App extends JFrame {

 

    public App() {

         

        this.setSize(400, 400)

        this.setLocationRelativeTo(null)

        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)

        

        // 添加菜单

        JMenuBar menuBar = new JMenuBar()

        this.setJMenuBar(menuBar)

        

        JMenu menu = new JMenu("文件")

        menuBar.add(menu)

        

        JMenuItem testMenuItem = new JMenuItem("打开")

        testMenuItem.addActionListener(e -> JOptionPane.showMessageDialog(this, "打开"))

        menu.add(testMenuItem)

        

        // 添加工具栏

        JToolBar toolBar = new JToolBar()

        this.add(toolBar, BorderLayout.NORTH)

        

        JButton btnSave = new JButton("保存")

        btnSave.addActionListener(e -> JOptionPane.showMessageDialog(this, "保存"))

        toolBar.add(btnSave)

    }

     

    public static void main(String[] args) {

       new App().setVisible(true)

    }

}

运行结果：

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