java 如何隐藏任务栏图标

是不是说，这个窗体不用JFrame，用JWindow来实现？

JFrame/JDialog/JWindow中JWindow不会出现在任务栏。不过你需要自己提供关闭的途径、也可以使用定时器关闭。final JWindow messagebox = new JWindow();
....
final ActionListener  action = new ActionListener(){
    public void actionPerformed(ActionEvent e){
        messagebox.dispose();
    }
};
final Timer timer = new Timer(TimeUnit.MINUTES.toMillis(3),action);
timer.setRepeat(false);
messagebox.addWindowListener(new WindowAdapter(){
    public void windowOpened(WindowEvent e){
        timer.start();
    }
});

我就想实现上图中俄窗口形式，这个是用JWindow做的吗？

我需要对弹出的窗口进行编辑，例如：加文字，图片，就像QQ的消息提醒窗口，用JWindow可以做吗？

InternalFrame是可以嵌套的内部窗体

JWindow 就是一没有标题栏、边框的顶层容器

可以
只不过JWindow没有上面的标题栏，需要你自己提供关闭窗口的途径。

这是我再网上找到的一段代码，可以实现我想要的功能，用的是JDialog，我感觉很不错和大家分享一下。import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingConstants;
import java.awt.Insets;
import java.awt.Toolkit;
import javax.swing.JDialog;public class VersionUtil{
private Map<String, String> feaMap = null;
private Point oldP;//上一次坐标,拖动窗口时用
private TipWindow tw = null;//提示框
private ImageIcon img = null;//图像组件
private JLabel imgLabel = null; //背景图片标签
private JPanel headPan = null;
private JPanel feaPan =null;
private JPanel btnPan = null;
private JLabel title = null;
private JLabel head = null;
private JLabel close = null;//关闭按钮
private JTextArea feature = null;
private JScrollPane jfeaPan = null;
private JLabel releaseLabel = null;
private JLabel sure = null;
private SimpleDateFormat sdf=null;

{
  sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  feaMap = new HashMap<String, String>();
  feaMap.put("name", "中国信息大学固定资产管理系统");
  feaMap.put("release", sdf.format(new Date()));
  feaMap.put("feature", "1.开发环境:windows\n2.开发语言:java\n3.开发工具:Eclipse3.2\n4.数据库类型:SQL Server2005\n5.开发人员:花新昌\n6.联系方式:15210477080");
}

public VersionUtil() {
  init();
  handle();
  tw.setAlwaysOnTop(true);
  tw.setUndecorated(true);
  tw.setResizable(false);
  tw.setVisible(true);
  tw.run();
}
public void init(){
  //新建300x220的消息提示框
  tw = new TipWindow(300, 220);
  img = new ImageIcon("background.gif");
  imgLabel = new JLabel(img);
  //设置各个面板的布局以及面板中控件的边界
  headPan = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0));
  feaPan = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0));
  btnPan = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0));
  title = new JLabel("欢迎使用本系统");
  head = new JLabel(feaMap.get("name"));
  close = new JLabel(" x");//关闭按钮
  feature = new JTextArea(feaMap.get("feature"));
  jfeaPan = new JScrollPane(feature);
  releaseLabel = new JLabel("登录  " + feaMap.get("release"));
  sure = new JLabel("确定");
  sure.setHorizontalAlignment(SwingConstants.CENTER);

  // 将各个面板设置为透明，否则看不到背景图片
  ((JPanel) tw.getContentPane()).setOpaque(false);
  headPan.setOpaque(false);
  feaPan.setOpaque(false);
  btnPan.setOpaque(false);

  //设置JDialog的整个背景图片
  tw.getLayeredPane().add(imgLabel, new Integer(Integer.MIN_VALUE));
  imgLabel.setBounds(0, 0, img.getIconWidth(), img.getIconHeight());
  headPan.setPreferredSize(new Dimension(300, 60));

  //设置提示框的边框,宽度和颜色
  tw.getRootPane().setBorder(BorderFactory.createMatteBorder(1, 1, 1, 1, Color.gray));

  title.setPreferredSize(new Dimension(260, 26));
  title.setVerticalTextPosition(JLabel.CENTER);
  title.setHorizontalTextPosition(JLabel.CENTER);
  title.setFont(new Font("宋体", Font.PLAIN, 12));
  title.setForeground(Color.black);
  close.setFont(new Font("Arial", Font.BOLD, 15));
  close.setPreferredSize(new Dimension(20, 20));
  close.setVerticalTextPosition(JLabel.CENTER);
  close.setHorizontalTextPosition(JLabel.CENTER);
  close.setCursor(new Cursor(12));
  close.setToolTipText("关闭");
  head.setPreferredSize(new Dimension(250, 35));
  head.setVerticalTextPosition(JLabel.CENTER);
  head.setHorizontalTextPosition(JLabel.CENTER);
  head.setFont(new Font("宋体", Font.PLAIN, 12));
  head.setForeground(Color.blue);
  feature.setEditable(false);
  feature.setForeground(Color.red);
  feature.setFont(new Font("宋体", Font.PLAIN, 13));
  feature.setBackground(new Color(184, 230, 172));
  //设置文本域自动换行
  feature.setLineWrap(true);  jfeaPan.setPreferredSize(new Dimension(250, 80));
  jfeaPan.setBorder(null);
  jfeaPan.setBackground(Color.black);

  releaseLabel.setForeground(Color.DARK_GRAY);
  releaseLabel.setFont(new Font("宋体", Font.PLAIN, 12));

  //为了隐藏文本域，加个空的JLabel将他挤到下面去
  JLabel jsp = new JLabel();
  jsp.setPreferredSize(new Dimension(300, 25));

  sure.setPreferredSize(new Dimension(110, 30));
  //设置标签鼠标手形
  sure.setCursor(new Cursor(12));  headPan.add(title);
  headPan.add(close);
  headPan.add(head);

  feaPan.add(jsp);
  feaPan.add(jfeaPan);
  feaPan.add(releaseLabel);

  btnPan.add(sure);

  tw.add(headPan, BorderLayout.NORTH);
  tw.add(feaPan, BorderLayout.CENTER);
  tw.add(btnPan, BorderLayout.SOUTH);
}

public void handle() {
  //为更新按钮增加相应的事件
  sure.addMouseListener(new MouseAdapter() {
   public void mouseClicked(MouseEvent e) {
    JOptionPane.showMessageDialog(tw, "谢谢，再见");
    tw.close();
   }
   public void mouseEntered(MouseEvent e) {
    sure.setBorder(BorderFactory.createLineBorder(Color.gray));
   }
   public void mouseExited(MouseEvent e) {
    sure.setBorder(null);
   }
  });
  //增加鼠标拖动事件
  title.addMouseMotionListener(new MouseMotionAdapter(){
   public void mouseDragged(MouseEvent e) {
    // TODO Auto-generated method stub
    Point newP = new Point(e.getXOnScreen(), e.getYOnScreen());
    int x = tw.getX() + (newP.x - oldP.x);
    int y = tw.getY() + (newP.y - oldP.y);
    tw.setLocation(x, y);
    oldP=newP;

   }
  });
  //鼠标按下时初始坐标,供拖动时计算用
  title.addMouseListener(new MouseAdapter() {
   public void mousePressed(MouseEvent e) {
    oldP = new Point(e.getXOnScreen(), e.getYOnScreen());
   }
  });

  //右上角关闭按钮事件
  close.addMouseListener(new MouseAdapter() {
   public void mouseClicked(MouseEvent e) {
    tw.close();
   }   public void mouseEntered(MouseEvent e) {
    close.setBorder(BorderFactory.createLineBorder(Color.gray));
   }   public void mouseExited(MouseEvent e) {
    close.setBorder(null);
   }
  }); }
public static void main(String args[]) {
  new VersionUtil();
}
}
class TipWindow extends JDialog{
private static final long serialVersionUID = 8541659783234673950L;
private static Dimension dim;
    private int x,  y;
    private int width,  height;
    private static Insets screenInsets;


    public TipWindow(int width,int height){
     this.width=width;
     this.height=height;
        dim = Toolkit.getDefaultToolkit().getScreenSize();
        screenInsets   =   Toolkit.getDefaultToolkit().getScreenInsets(this.getGraphicsConfiguration());
        x = (int) (dim.getWidth() - width-3);
        y = (int) (dim.getHeight()-screenInsets.bottom-3);
     initComponents();
    }
    public void run() {
        for (int i = 0; i <= height; i += 10) {
           try {
                this.setLocation(x, y - i);
                Thread.sleep(5);
            } catch (InterruptedException ex) {
            }
        }
        //此处代码用来实现让消息提示框5秒后自动消失
        try {
   Thread.sleep(5000);
  } catch (InterruptedException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
        close();
    }
    private void initComponents() {
        this.setSize(width, height);
        this.setLocation(x, y);
        this.setBackground(Color.black);
    }
    public void close(){
     x=this.getX();
     y=this.getY();
     int ybottom=(int)dim.getHeight()-screenInsets.bottom;
     for (int i = 0; i <= ybottom-y; i += 10) {
            try {
                setLocation(x, y+i);
                Thread.sleep(5);
            } catch (InterruptedException ex) {
            }
        }
     dispose();
    }
}

我想问一下那么多的import都是要一一记住的吗？还只可以查到啊？

调试易

java 如何隐藏任务栏图标

解决方案 »