質問編集履歴
2
追記
test
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File without changes
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test
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@@ -66,23 +66,7 @@
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66
66
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67
67
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Eex other = (Eex) obj;
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68
68
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69
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-
if (A == null) {
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70
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-
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71
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-
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69
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+
return this.A == other.A && this.B == other.B;
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72
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-
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73
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}
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74
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-
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75
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else if (!A.equals(other.A))return false;
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76
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-
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77
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if (B == null) {
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78
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-
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79
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if (other.B != null)return false;
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80
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-
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81
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-
}
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82
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-
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83
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-
else if (!B.equals(other.B))return false;
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84
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-
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85
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-
return true;
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86
70
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87
71
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}
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72
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@@ -92,17 +76,7 @@
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92
76
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93
77
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public int hashCode() {
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94
78
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95
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-
final int prime = 31;
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96
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-
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97
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int result = 1;
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98
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-
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99
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result = prime * result + ((A == null) ? 0 : A.hashCode());
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100
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-
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101
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-
result = prime * result + ((B == null) ? 0 : B.hashCode());
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102
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-
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103
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-
return
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79
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+
return Objects.hash(A, B); }
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104
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-
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105
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-
}
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106
80
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107
81
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}
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108
82
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1
追記
test
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File without changes
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test
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@@ -27,3 +27,85 @@
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27
27
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[関連する質問](https://teratail.com/questions/155941)
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28
28
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29
29
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試したこと3つ目は上のURLに関連してます。
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30
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+
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31
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+
###クラスのオーバーライド追記
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32
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+
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33
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+
```Java
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34
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+
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35
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+
class Eex {
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36
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+
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37
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+
public int A;
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38
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+
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39
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+
public int B;
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40
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+
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41
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+
public Eex(int a, int b){
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42
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+
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43
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A = a;
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44
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+
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45
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B = b;
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46
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+
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47
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+
}
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48
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+
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49
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+
@Override
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50
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+
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51
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+
public String toString() {
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52
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+
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53
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+
return String.format("%d %d", A, B);
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54
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+
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55
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}
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56
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+
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57
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+
@Override
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58
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+
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59
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+
public boolean equals(Object obj) {
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60
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+
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61
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+
if (this == obj)return true;
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62
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+
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63
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+
if (obj == null)return false;
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64
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+
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65
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+
if (!(obj instanceof Eex))return false;
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66
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+
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67
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+
Eex other = (Eex) obj;
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68
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+
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69
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+
if (A == null) {
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70
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+
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71
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+
if (other.A != null)return false;
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72
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+
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73
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+
}
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74
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+
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75
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+
else if (!A.equals(other.A))return false;
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76
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+
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77
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+
if (B == null) {
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78
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+
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79
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+
if (other.B != null)return false;
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80
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+
|
|
81
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+
}
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82
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+
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83
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+
else if (!B.equals(other.B))return false;
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84
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+
|
|
85
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+
return true;
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86
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+
|
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87
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+
}
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88
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+
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89
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+
|
|
90
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+
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91
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+
@Override
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|
92
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+
|
|
93
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+
public int hashCode() {
|
|
94
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+
|
|
95
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+
final int prime = 31;
|
|
96
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+
|
|
97
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+
int result = 1;
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98
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+
|
|
99
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+
result = prime * result + ((A == null) ? 0 : A.hashCode());
|
|
100
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+
|
|
101
|
+
result = prime * result + ((B == null) ? 0 : B.hashCode());
|
|
102
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+
|
|
103
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+
return result;
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|
104
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+
|
|
105
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+
}
|
|
106
|
+
|
|
107
|
+
}
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|
108
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+
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|
109
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+
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110
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+
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|
111
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+
```
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