任何使窗口居中显示。

[jarrywan]

通过什么方法，可以获得环境变量，是窗口居中显示。

[namowen]

Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = frame.getSize();
frame.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);

[alphazhao]

调用如下CenterShow class即可：
比如在一个扩展Frame class的jbInit()方法内调用如下
CenterShow cs = new CenterShow(this);

附CenterShow代码：
import java.awt.*;
public class CenterShow {
public CenterShow(Frame frame) {//目标显示为界面Frame/JFrame
//Center the window
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = frame.getSize();
if (frameSize.height > screenSize.height) {
frameSize.height = screenSize.height;
}
if (frameSize.width > screenSize.width) {
frameSize.width = screenSize.width;
}
frame.setLocation((screenSize.width - frameSize.width) / 2,
(screenSize.height - frameSize.height) / 2);
}

public CenterShow(Dialog dialog) {//目标显示为对话框Dialog/JDialog
//Center the window
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension dialogSize = dialog.getSize();
if (dialogSize.height > screenSize.height) {
dialogSize.height = screenSize.height;
}
if (dialogSize.width > screenSize.width) {
dialogSize.width = screenSize.width;
}
dialog.setLocation((screenSize.width - dialogSize.width) / 2,
(screenSize.height - dialogSize.height) / 2);
}
}

[Kick_hotdog]

//Center the window
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = frame.getSize();
if (frameSize.height > screenSize.height) {
frameSize.height = screenSize.height;
}
if (frameSize.width > screenSize.width) {
frameSize.width = screenSize.width;
}
frame.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);
frame.setVisible(true);

[bigbearcn]

Dimension screen= Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = frame.getSize();
if (frameSize.height > screen.height) {
frameSize.height = screen.height;
}
if (frameSize.width > screen.width) {
frameSize.width = screen.width;
}
frame.setLocation((screen.width - frameSize.width) / 2, (screen.height - frameSize.height) / 2);
frame.setVisible(true);

[henssen]

up