swing禁用最大化、去掉java图标、设置窗口为中央显示以及多线程

2013-02-04 23:24 Java 狂奔的蜗牛

1.禁用最大化窗口

f.setResizable(false); 
2.去掉JFrame的java图标

Image icon = Toolkit.getDefaultToolkit().getImage(""); 
f.setIconImage(icon); 
3.设置窗口为中央显示 
   a.适用所有窗口 
```java
    public      void   centerWindow(Component   component)   { 
        Toolkit   toolkit   =   Toolkit.getDefaultToolkit(); 
        Dimension   scmSize   =   toolkit.getScreenSize(); 
        Dimension   size   =   component.getPreferredSize(); 
        int   width   =   component.WIDTH, 
                height   =   component.HEIGHT;

component.setLocation(scmSize.width   /   2   -   (width   /   2), 
                                                    scmSize.height   /   2   -   (height   /   2)); 
    }

centerWindow(f);

```
b.不是对所有的都适用,如对装有Image图象的ImagePanelPanel面板的窗口就不行 
   setLocationRelativeTo(null);

4.swing 多线程 
```java
import java.awt.BorderLayout; 
import java.awt.event.ActionEvent;

import javax.swing.JButton; 
import javax.swing.JFrame; 
import javax.swing.JPanel;

public class TestThread extends JFrame { 
JPanel jPanel1 = new JPanel(); 
JButton startButton = new JButton(); 
JButton stopButton = new JButton(); 
MyThread thread = null;

public TestThread() { 
try { 
jbInit(); 
} catch (Exception e) { 
e.printStackTrace(); 
} 
}

private void jbInit() throws Exception { 
startButton.setText("start"); 
startButton.addActionListener(new java.awt.event.ActionListener() { 
public void actionPerformed(ActionEvent e) { 
startButton_actionPerformed(e); 
} 
}); 
stopButton.setText("stop"); 
stopButton.addActionListener(new java.awt.event.ActionListener() { 
public void actionPerformed(ActionEvent e) { 
stopButton_actionPerformed(e); 
} 
}); 
this.getContentPane().add(jPanel1, BorderLayout.CENTER); 
jPanel1.add(startButton, null); 
jPanel1.add(stopButton, null); 
}

void startButton_actionPerformed(ActionEvent e) { 
if (thread != null) 
thread.stop(); 
thread = new MyThread(); 
thread.start(); 
}

void stopButton_actionPerformed(ActionEvent e) { 
if (thread != null) 
thread.stop(); 
thread = null; 
}

public static void main(String[] args) { 
TestThread test = new TestThread(); 
test.setSize(300, 400); 
test.show(); 
}

private class MyThread extends Thread { 
public MyThread() { 
}

public void run() { 
while (true) { 
try { 
sleep(1000); 
} catch (InterruptedException e) { 
} 
System.out.println("this is a test!"); 
} 
} 
} 
} 
```

作者：狂奔的蜗牛 出处： http://www.host900.com/

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