回答編集履歴
1
Java 8向けサンプルを追加
answer
CHANGED
|
@@ -43,4 +43,38 @@
|
|
|
43
43
|
getContentPane().add(keyPanel);
|
|
44
44
|
}
|
|
45
45
|
}
|
|
46
|
+
```
|
|
47
|
+
|
|
48
|
+
SwingSampleクラスをJPanelの派生クラスに変更し、Java 8の環境であれば、次のようなコードになります。
|
|
49
|
+
|
|
50
|
+
```Java
|
|
51
|
+
public class SwingSample extends JPanel {
|
|
52
|
+
private JTextField tfName = new JTextField();
|
|
53
|
+
private String name;
|
|
54
|
+
|
|
55
|
+
public static void main(String[] args){
|
|
56
|
+
final JFrame f = new JFrame("SwingSample");
|
|
57
|
+
f.getContentPane().add(new SwingSample());
|
|
58
|
+
f.setSize(400, 400);
|
|
59
|
+
f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
|
|
60
|
+
SwingUtilities.invokeLater(()->f.setVisible(true));
|
|
61
|
+
}
|
|
62
|
+
|
|
63
|
+
SwingSample(){
|
|
64
|
+
final JButton btn1 = new JButton("Save");
|
|
65
|
+
final JButton btn2 = new JButton("Restore");
|
|
66
|
+
|
|
67
|
+
setLayout(new GridLayout(3, 1));
|
|
68
|
+
add(tfName);
|
|
69
|
+
add(btn1);
|
|
70
|
+
add(btn2);
|
|
71
|
+
|
|
72
|
+
btn1.addActionListener((e)->{
|
|
73
|
+
name = tfName.getText();
|
|
74
|
+
tfName.setText("");
|
|
75
|
+
});
|
|
76
|
+
|
|
77
|
+
btn2.addActionListener((e)->tfName.setText(name));
|
|
78
|
+
}
|
|
79
|
+
}
|
|
46
80
|
```
|