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トップに関する質問Java リストボックスをクリックしても認識出来ない

編集履歴

質問編集履歴

3

画像の追加

2019/01/30 23:36

投稿

qwxpc243
qwxpc243

スコア15

test CHANGED
File without changes
test CHANGED
File without changes

2

コードを<code>ボタンで挿入。

2019/01/30 23:36

投稿

qwxpc243
qwxpc243

スコア15

test CHANGED
File without changes
test CHANGED
@@ -1,4 +1,220 @@
1
+ ```ここに言語を入力
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+
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+ import java.awt.Font;
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+
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+ import java.awt.event.ActionEvent;
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+
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+ import java.awt.event.ActionListener;
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+
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+ import java.io.File;
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+
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+
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+
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+ import javax.swing.JButton;
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+
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+ import javax.swing.JFrame;
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+
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+ import javax.swing.JList;
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+
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+ import javax.swing.JScrollPane;
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+
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+ import javax.swing.event.ListSelectionEvent;
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+
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+ import javax.swing.event.ListSelectionListener;
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+
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+
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+
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+ public class TEST1 extends JFrame implements ListSelectionListener {
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+
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+
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+
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+ static String[] file_name;
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+
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+ String[] file_name2 = new String[200];
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+
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+ String[] folder = new String[200];
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+
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+ String[] name = new String[200];
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+
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+ static String url1;
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+
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+ String url2;
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+
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+
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+
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+
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+
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+ public TEST1() {
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+
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+
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+
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+ url1 = "C:\Users\表示テスト\";
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+
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+
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+
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+ setSize(1300, 750);
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+
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+ setLayout(null);
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+
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+
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+
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+ button1();
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+
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+
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+
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+ list_sakusei();
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+
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+
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+
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+ }
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+
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+
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+
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+
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+
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+ //空のリストボックス作成
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+
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+ public void list_sakusei() {
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+
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+
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+
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+ JList lst0 = new JList(file_name2);
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+
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+ lst0.addListSelectionListener(this);
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+
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+ JScrollPane lst1 = new JScrollPane(lst0);
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+
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+ lst1.setBounds(240, 150, 470,400);
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+
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+ getContentPane().add(lst1);
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+
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+ setVisible(true);
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+
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+
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+
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+ }
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+
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+
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+
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+
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+
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+ public void button1() {
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+
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+ JButton button1 = new JButton("ボタン1");
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+
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+ button1.setFont(new Font("Gothic", Font.PLAIN, 13));
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+
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+ button1.setBounds(80,150,150,30);
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+
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+ add(button1);
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+
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+ button1.addActionListener(new button1());
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+
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+ }
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+
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+
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+
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+
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+
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+ public void valueChanged(ListSelectionEvent e) {
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+
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+
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+
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+ JList lst1 = (JList)e.getSource();
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+
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+ url2 = url1+lst1.getSelectedValue();
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+
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+
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+
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+ //aフォルダの一覧を抽出する
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+
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+ File file2 = new File(url2);
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+
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+ if(!file2.isDirectory()) return;
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+
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+ File files[] = file2.listFiles();
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+
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+ file_name = new String[files.length];
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+
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+ for (int i=0; i<files.length; i++) {
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+
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+ file_name[i] = files[i].getName();
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+
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+ File item = files[i];
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+
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+ if(item.isDirectory()) {
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+
147
+ folder[i] = item.getName();
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+
149
+ }
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+
151
+ if (item.isFile()) {
152
+
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+ name[i] = item.getName();
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+
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+ }
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+
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+ }
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+
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+ lst1.setListData(file_name);
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+
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+ }
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+
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+
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+
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+
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+
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+ public class button1 implements ActionListener{
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+
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+ public void actionPerformed(ActionEvent e){
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+
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+
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+
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+ File file2 = new File(url1);
174
+
175
+ if(!file2.isDirectory()) return;
176
+
177
+ File files[] = file2.listFiles();
178
+
179
+ file_name = new String[files.length];
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+
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+ for (int i=0; i<files.length; i++) {
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+
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+ file_name[i] = files[i].getName();
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+
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+ }
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+
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+ JList lst0 = new JList(file_name);
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+
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+ JScrollPane lst1 = new JScrollPane(lst0);
190
+
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+ lst1.setBounds(240, 150, 470,400);
192
+
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+ add(lst1);
194
+
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+ setVisible(true);
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+
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+
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+
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+ }
200
+
201
+ }
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+
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+
204
+
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+
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+
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+ public static void main(String[] args) {
208
+
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+ new TEST1();
210
+
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+ }
212
+
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+
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+
215
+ }
216
+
1
- [リンク内容](https://teratail.com/questions/169859)
217
+ ```[リンク内容](https://teratail.com/questions/169859)
2
218
 
3
219
 
4
220
 
@@ -13,223 +229,3 @@
13
229
 
14
230
 
15
231
  宜しくお願い致します。
16
-
17
-
18
-
19
- <code>
20
-
21
-
22
-
23
- import java.awt.Font;
24
-
25
- import java.awt.event.ActionEvent;
26
-
27
- import java.awt.event.ActionListener;
28
-
29
- import java.io.File;
30
-
31
-
32
-
33
- import javax.swing.JButton;
34
-
35
- import javax.swing.JFrame;
36
-
37
- import javax.swing.JList;
38
-
39
- import javax.swing.JScrollPane;
40
-
41
- import javax.swing.event.ListSelectionEvent;
42
-
43
- import javax.swing.event.ListSelectionListener;
44
-
45
-
46
-
47
- public class TEST1 extends JFrame implements ListSelectionListener {
48
-
49
-
50
-
51
- static String[] file_name;
52
-
53
- String[] file_name2 = new String[200];
54
-
55
- String[] folder = new String[200];
56
-
57
- String[] name = new String[200];
58
-
59
- static String url1;
60
-
61
- String url2;
62
-
63
-
64
-
65
-
66
-
67
- public TEST1() {
68
-
69
-
70
-
71
- url1 = "C:\Users\表示テスト\";
72
-
73
-
74
-
75
- setSize(1300, 750);
76
-
77
- setLayout(null);
78
-
79
-
80
-
81
- button1();
82
-
83
-
84
-
85
- list_sakusei();
86
-
87
-
88
-
89
- }
90
-
91
-
92
-
93
-
94
-
95
- //空のリストボックス作成
96
-
97
- public void list_sakusei() {
98
-
99
-
100
-
101
- JList lst0 = new JList(file_name2);
102
-
103
- lst0.addListSelectionListener(this);
104
-
105
- JScrollPane lst1 = new JScrollPane(lst0);
106
-
107
- lst1.setBounds(240, 150, 470,400);
108
-
109
- getContentPane().add(lst1);
110
-
111
- setVisible(true);
112
-
113
-
114
-
115
- }
116
-
117
-
118
-
119
-
120
-
121
- public void button1() {
122
-
123
- JButton button1 = new JButton("ボタン1");
124
-
125
- button1.setFont(new Font("Gothic", Font.PLAIN, 13));
126
-
127
- button1.setBounds(80,150,150,30);
128
-
129
- add(button1);
130
-
131
- button1.addActionListener(new button1());
132
-
133
- }
134
-
135
-
136
-
137
-
138
-
139
- public void valueChanged(ListSelectionEvent e) {
140
-
141
-
142
-
143
- JList lst1 = (JList)e.getSource();
144
-
145
- url2 = url1+lst1.getSelectedValue();
146
-
147
-
148
-
149
- //aフォルダの一覧を抽出する
150
-
151
- File file2 = new File(url2);
152
-
153
- if(!file2.isDirectory()) return;
154
-
155
- File files[] = file2.listFiles();
156
-
157
- file_name = new String[files.length];
158
-
159
- for (int i=0; i<files.length; i++) {
160
-
161
- file_name[i] = files[i].getName();
162
-
163
- File item = files[i];
164
-
165
- if(item.isDirectory()) {
166
-
167
- folder[i] = item.getName();
168
-
169
- }
170
-
171
- if (item.isFile()) {
172
-
173
- name[i] = item.getName();
174
-
175
- }
176
-
177
- }
178
-
179
- lst1.setListData(file_name);
180
-
181
- }
182
-
183
-
184
-
185
-
186
-
187
- public class button1 implements ActionListener{
188
-
189
- public void actionPerformed(ActionEvent e){
190
-
191
-
192
-
193
- File file2 = new File(url1);
194
-
195
- if(!file2.isDirectory()) return;
196
-
197
- File files[] = file2.listFiles();
198
-
199
- file_name = new String[files.length];
200
-
201
- for (int i=0; i<files.length; i++) {
202
-
203
- file_name[i] = files[i].getName();
204
-
205
- }
206
-
207
- JList lst0 = new JList(file_name);
208
-
209
- JScrollPane lst1 = new JScrollPane(lst0);
210
-
211
- lst1.setBounds(240, 150, 470,400);
212
-
213
- add(lst1);
214
-
215
- setVisible(true);
216
-
217
-
218
-
219
- }
220
-
221
- }
222
-
223
-
224
-
225
-
226
-
227
- public static void main(String[] args) {
228
-
229
- new TEST1();
230
-
231
- }
232
-
233
-
234
-
235
- }

1

タイトルの修正

2019/01/30 23:34

投稿

qwxpc243
qwxpc243

スコア15

test CHANGED
@@ -1 +1 @@
1
- Javaのリストボックスについて2
1
+ Java リストボックスをクリックしても認識出来ない
test CHANGED
@@ -16,6 +16,10 @@
16
16
 
17
17
 
18
18
 
19
+ <code>
20
+
21
+
22
+
19
23
  import java.awt.Font;
20
24
 
21
25
  import java.awt.event.ActionEvent;