Java窗口居中

在J2SE中，我们可以通过计算屏幕的大小和窗口的大小，然后调整窗口的位置达到让窗口居中的效果。

实例1：<wbr style="line-height:25px"><div style="line-height:25px"> <div style="line-height:25px; color:rgb(51,102,255)"> JFrame fileDeleter=new FileDeleter();</div> <div style="line-height:25px"> <span style="color:#3366FF; line-height:25px"> </span><span style="color:#993300; line-height:25px">Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();</span> </div> <div style="line-height:25px; color:rgb(51,102,255)"> Dimension frameSize =fileDeleter.getSize();</div> <div style="line-height:25px; color:rgb(51,102,255)"> if (frameSize.height &gt; screenSize.height) {</div> <div style="line-height:25px; color:rgb(51,102,255)"> frameSize.height = screenSize.height;</div> <div style="line-height:25px; color:rgb(51,102,255)"> }</div> <div style="line-height:25px; color:rgb(51,102,255)"> if (frameSize.width &gt; screenSize.width) {</div> <div style="line-height:25px; color:rgb(51,102,255)"> frameSize.width = screenSize.width;</div> <div style="line-height:25px; color:rgb(51,102,255)"> }</div> <div style="line-height:25px"> <span style="line-height:25px; color:rgb(51,102,255)"> </span><span style="color:#993300; line-height:25px">fileDeleter.setLocation((screenSize.width - frameSize.width) / 2,</span> </div> <div style="line-height:25px"><span style="color:#993300; line-height:25px"> (screenSize.height - frameSize.height) / 2);</span></div> <div style="line-height:25px; color:rgb(51,102,255)"> fileDeleter.setVisible(true);</div> </div> </wbr>