回答編集履歴
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見直しキャンペーン中
test
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> やっぱりJOptionPaneを使ってはできないんでしょうか。
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そんなことはないですよ^^
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`showOptionDialog`を使ってください。
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[JOptionPane (Java Platform SE 8 )](https://docs.oracle.com/javase/jp/8/docs/api/javax/swing/JOptionPane.html#showOptionDialog-java.awt.Component-java.lang.Object-java.lang.String-int-int-javax.swing.Icon-java.lang.Object:A-java.lang.Object-)
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```Java
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import javax.swing.JButton;
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import javax.swing.JFrame;
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import javax.swing.JOptionPane;
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public class Questions339725 extends JFrame {
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public static void main(String[] args) {
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new Questions339725().setVisible(true);
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}
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Questions339725() {
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setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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setSize(200, 200);
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setLocationRelativeTo(null);
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JButton button = new JButton("show Dialog");
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button.addActionListener(x -> {
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String[] options = { "cat", "dog", "panda" };
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int choice = JOptionPane.showOptionDialog(this,
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"What animal do you like?", "",
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JOptionPane.DEFAULT_OPTION, JOptionPane.QUESTION_MESSAGE,
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null, options, null);
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if (choice == JOptionPane.CLOSED_OPTION) {
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System.out.println("未選択");
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} else {
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System.out.println(options[choice]);
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}
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});
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add(button);
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}
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}
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```
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