回答編集履歴
1
Thread 版を追加
answer
CHANGED
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@@ -54,4 +54,61 @@
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54
54
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while(System.in.read() != target);
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55
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}
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}
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57
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```
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58
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59
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別スレッドで非同期処理をということですが, ネタとしては意味が無いように思います.
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60
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どちらかからの課題なのでしょうか.
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61
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```java
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62
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import java.io.IOException;
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63
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import java.util.Random;
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64
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65
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class RandomTimer extends Thread {
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66
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private long wait;
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67
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private int targetCode;
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68
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private long reponseTime;
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69
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RandomTimer(int waitmax, int targetCode) {
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70
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Random random = new Random();
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wait = random.nextInt(waitmax);
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72
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this.targetCode = targetCode;
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}
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public void run() {
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75
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try {
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waitTarget(targetCode);
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Thread.sleep(wait);
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78
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clearStdIn();
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System.out.println("*");
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long startTime = System.currentTimeMillis();
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81
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waitTarget(targetCode);
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82
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reponseTime = System.currentTimeMillis() - startTime;
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83
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} catch (IOException | InterruptedException e) {
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84
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e.printStackTrace();
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85
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}
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86
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}
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87
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public long getReponseTime() {
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88
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return reponseTime;
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89
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}
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90
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//標準入力のゴミを削除
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91
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void clearStdIn() throws IOException {
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92
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while(System.in.available() != 0) System.in.read();
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93
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}
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94
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//標準入力から targetCode が入力されるまで待つ
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95
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void waitTarget(int targetCode) throws IOException {
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96
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while(System.in.read() != targetCode);
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97
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}
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98
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}
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99
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public class Quickpress {
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100
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public static void main(String[] args) throws IOException, InterruptedException {
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101
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int targetCode = getBr();
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102
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System.out.println("Hit enter to start:");
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103
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RandomTimer randomTimer = new RandomTimer(5000, targetCode);
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104
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randomTimer.start();
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105
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randomTimer.join();
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106
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System.out.println("タイム: "+randomTimer.getReponseTime()+ "[ms]");
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107
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}
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108
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//改行コードを取得
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109
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static int getBr() {
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110
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String br = System.getProperty("line.separator");
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111
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return br.getBytes()[0];
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112
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}
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113
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}
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57
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```
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