回答編集履歴
2
ENTER を一度も入力しなくてもソレっぽく動作するように修正
test
CHANGED
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@@ -20,9 +20,13 @@
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20
20
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21
21
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22
22
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23
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-
//1秒後に
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23
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//1秒後に停止する
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24
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class Worker extends Thread {
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26
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private int count = 0;
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28
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29
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private boolean end = false;
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public void run() {
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@@ -30,19 +34,21 @@
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34
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35
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Thread.sleep(1000);
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36
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System.in
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37
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System.out.println("Enter to End.");
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34
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39
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} catch (InterruptedException e) {
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40
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e.printStackTrace();
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42
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39
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} catch (IOException e) {
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40
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-
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41
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e.printStackTrace();
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42
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-
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43
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}
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44
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45
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end = true;
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46
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47
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}
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48
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49
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void countUp() { if(!end) count ++; }
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50
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51
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int getCount() { return count; }
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52
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}
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54
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@@ -52,11 +58,9 @@
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58
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53
59
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public static void main(String[] args) {
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54
60
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55
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-
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61
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+
Worker worker = new Worker();
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56
62
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57
63
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try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in));) {
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58
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-
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59
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-
Worker worker = new Worker();
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64
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61
65
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System.out.print("Enter to Start.");
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66
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@@ -66,13 +70,13 @@
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66
70
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71
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worker.start();
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72
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69
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-
System.out.print("Hit Enters.");
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73
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+
System.out.println("Hit Enters.");
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70
74
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71
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-
while (
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75
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while (worker.isAlive()) {
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72
76
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br.readLine();
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78
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75
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-
count
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79
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worker.countUp();
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76
80
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81
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}
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82
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@@ -80,7 +84,7 @@
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80
84
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85
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}
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86
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83
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-
System.out.println("count="+
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87
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System.out.println("count="+worker.getCount());
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84
88
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85
89
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}
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86
90
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1
コード追加
test
CHANGED
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@@ -1 +1,89 @@
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1
1
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「1秒間でエンターキーを押した数を表示」であれば、別スレッドは 1 秒後に表示する 1 つだけで済むはずです。
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2
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3
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4
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5
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----
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6
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7
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8
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9
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上で別スレッドで表示としましたが、分かり難いかもしれませんのでメインスレッドで表示するものにしました。
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10
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11
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12
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13
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```java
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14
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15
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package teratail_java.q367984;
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16
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17
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18
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19
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import java.io.*;
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20
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21
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22
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23
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//1秒後に標準入力を閉じる
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24
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+
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25
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class Worker extends Thread {
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26
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27
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public void run() {
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28
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29
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try {
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30
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31
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Thread.sleep(1000);
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32
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33
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System.in.close();
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34
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35
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} catch (InterruptedException e) {
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36
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37
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e.printStackTrace();
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38
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39
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} catch (IOException e) {
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40
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+
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41
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+
e.printStackTrace();
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42
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+
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43
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}
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44
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+
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45
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}
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46
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47
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}
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48
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49
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50
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51
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class Sample {
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52
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53
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public static void main(String[] args) {
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|
54
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55
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+
int count = 0;
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56
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+
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57
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+
try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in));) {
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58
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+
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59
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+
Worker worker = new Worker();
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60
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+
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61
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+
System.out.print("Enter to Start.");
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62
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+
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63
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+
br.readLine();
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64
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+
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65
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+
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66
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+
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67
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+
worker.start();
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68
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+
|
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69
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+
System.out.print("Hit Enters.");
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70
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+
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71
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+
while (true) {
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72
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+
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73
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+
br.readLine();
|
|
74
|
+
|
|
75
|
+
count ++;
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|
76
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+
|
|
77
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+
}
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78
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+
|
|
79
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+
} catch (IOException ignore) {
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|
80
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+
|
|
81
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+
}
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|
82
|
+
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83
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+
System.out.println("count="+count);
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|
84
|
+
|
|
85
|
+
}
|
|
86
|
+
|
|
87
|
+
}
|
|
88
|
+
|
|
89
|
+
```
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