import java.awt.event.WindowEvent; import java.awt.event.WindowStateListener; import javax.swing.JFrame; public class WinFrame extends JFrame { public WinFrame(){ this.setName("Window 窗口状态"); this.setSize(300,300); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.addWindowStateListener(new WindowStateListener () { public void windowStateChanged(WindowEvent state) { if(state.getNewState() == 1 || state.getNewState() == 7) { System.out.println("窗口最小化"); }else if(state.getNewState() == 0) { System.out.println("窗口恢复到初始状态"); }else if(state.getNewState() == 6) { System.out.println("窗口最大化"); } } }); this.setVisible(true); } public static void main(String[] args) { new WinFrame(); } }
另外一个利用JFrame创建窗体的小例子
利用JFrame创建的窗口分别包含一个标题、最小化按钮、最大化按钮和关闭按钮
public class Test(){ public static void main(String[] args){ JFrame frame = new JFrame(); JPanel panel = new JPanel(); JTextArea textArea = new JTextArea(); panel.setLayout(new GridLayout()); textArea.setText("test"); //当TextArea里的内容过长时生成滚动条 panel.add(new JScrollPane(textArea)); frame.add(panel); frame.setSize(200,200); frame.setVisible(true); } }
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