这个功能是不需要特殊设置的!!JFrame自身就已经具备了此功能!!import java.awt.BorderLayout;import javax.swing.JPanel;import javax.swing.JTextField;import javax.swing.WindowConstants;import javax.swing.SwingUtilities;public class TestFrame extends javax.swing.JFrame { private static final long serialVersionUID = 1L; private JPanel jPanel1; private JTextField textField2; public static void main(String[] args) {SwingUtilities.invokeLater(new Runnable() { public void run() {
TestFrame inst = new TestFrame();
inst.setLocationRelativeTo(null);
inst.setVisible(true); }}); }public TestFrame() {super();initGUI(); }private void initGUI() {try { setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE); {
jPanel1 = new JPanel();
getContentPane().add(jPanel1, BorderLayout.CENTER);
jPanel1.setLayout(null);
jPanel1.setBackground(new java.awt.Color(255,255,255));
{
textField2 = new JTextField();
jPanel1.add(textField2);
textField2.setBounds(120, 106, 128, 22);
} } pack(); setSize(400, 300);} catch (Exception e) { e.printStackTrace();} }}这是一个简单的应用程序窗口,点击左上角的咖啡图标试试~~会得到你要的效果的!!
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