?? application1.java~1~
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package sayhello;import javax.swing.UIManager;import java.awt.*;public class Application1 { boolean packFrame = false; /**Construct the application*/ public Application1() { Frame1 frame = new Frame1(); //Validate frames that have preset sizes //Pack frames that have useful preferred size info, e.g. from their layout if (packFrame) { frame.pack(); } else { frame.validate(); } //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); } /**Main method*/ public static void main(String[] args) { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch(Exception e) { e.printStackTrace(); } new Application1(); }}?? 快捷鍵說明
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