回答編集履歴
1
Java 8向けサンプルを追加
test
CHANGED
@@ -89,3 +89,71 @@
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}
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```
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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。
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```Java
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public class SwingSample extends JPanel {
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private JTextField tfName = new JTextField();
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private String name;
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public static void main(String[] args){
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final JFrame f = new JFrame("SwingSample");
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f.getContentPane().add(new SwingSample());
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f.setSize(400, 400);
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f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
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SwingUtilities.invokeLater(()->f.setVisible(true));
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}
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SwingSample(){
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final JButton btn1 = new JButton("Save");
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final JButton btn2 = new JButton("Restore");
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setLayout(new GridLayout(3, 1));
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add(tfName);
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add(btn1);
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add(btn2);
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btn1.addActionListener((e)->{
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name = tfName.getText();
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tfName.setText("");
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});
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btn2.addActionListener((e)->tfName.setText(name));
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}
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}
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```
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