javaで特定の文字を打った時JLabelに画像表示したい

textFieldに文字"test"と打った時
JLabelに画像test.jpgを表示したいです

行動規範の内容に同意します

回答2件

ベストアンサー

以下でできると思います(コンパイルと同フォルダにtest.jpg)

java
1import java.awt.BorderLayout;
2import java.awt.EventQueue;
3import javax.swing.event.DocumentListener;
4import javax.swing.event.DocumentEvent;
5import javax.swing.JFrame;
6import javax.swing.JPanel;
7import javax.swing.border.EmptyBorder;
8import javax.swing.JTextField;
9import javax.swing.JLabel;
10import java.awt.GridLayout;
11import java.awt.Component;
12import javax.swing.SwingConstants;
13
14import javax.swing.*;
15
16public class DRN extends JFrame {
17
18   private static final long serialVersionUID = 1L;
19   private JPanel contentPane;
20   private JPanel panelCenter;
21   static JTextField textField01 = new JTextField();
22
23   private JLabel label01;
24   private JPanel panel1;
25
26   static DRN frame;
27
28   ImageIcon con2 = new ImageIcon("test.jpg");// test.jpg
29
30   public static void main(String[] args) {
31   	EventQueue.invokeLater(new Runnable() {
32   		public void run() {
33   			try {
34   				frame = new DRN();
35   				frame.setVisible(true);
36   			} catch (Exception e) {
37   				e.printStackTrace();
38   			}
39   		}
40   	});
41   }
42
43   public DRN() {
44
45   	setTitle("test");
46   	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
47   	setBounds(100, 100, 700, 250);
48   	contentPane = new JPanel();
49   	contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
50   	contentPane.setLayout(new BorderLayout(0, 0));
51   	setContentPane(contentPane);
52
53   	panelCenter = new JPanel();
54   	contentPane.add(panelCenter, BorderLayout.CENTER);
55   	panelCenter.setLayout(new GridLayout(2, 1, 0, 0));
56
57   	panel1 = new JPanel();
58   	panel1.setAlignmentY(Component.BOTTOM_ALIGNMENT);
59   	panelCenter.add(panel1);
60   	panel1.setLayout(new GridLayout(6, 1, 0, 0));
61
62   	label01 = new JLabel("");
63   	panel1.add(label01);
64   	label01.setHorizontalAlignment(SwingConstants.LEFT);
65
66   	textField01 = new JTextField();
67   	textField01.getDocument().addDocumentListener(new DocumentListener() {
68
69   		public void changedUpdate(DocumentEvent e) {
70
71   		}
72
73   		public void removeUpdate(DocumentEvent r) {
74   		}
75
76   		public void insertUpdate(DocumentEvent r) {
77   			if (textField01.getText().equals("test")) {
78   				JLabel lab2 = new JLabel(con2);
79   				lab2.setBounds(60, 100, 100, 30);
80   				panel1.add(lab2);
81   				panelCenter.add(panel1);
82
83   				frame.setVisible(true);
84   			}
85
86   		}
87   	}
88
89   	);
90   	panel1.add(textField01);
91   	textField01.setColumns(10);
92
93   	panelCenter.add(panel1);
94
95   }
96
97}
98