回答編集履歴
4
改正
test
CHANGED
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@@ -102,7 +102,7 @@
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102
102
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103
103
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}
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104
104
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105
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-
class M
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105
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+
class Main{
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106
106
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107
107
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public static void main(String[] args){
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108
108
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3
改正
test
CHANGED
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@@ -76,4 +76,44 @@
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76
76
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77
77
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}
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78
78
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79
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+
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80
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+
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81
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+
または
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82
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+
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83
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+
class Parent{
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84
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+
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85
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+
public void method(){
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86
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+
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87
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+
System.out.println("Parent");
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88
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+
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89
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+
}
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90
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+
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91
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+
}
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92
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+
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93
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+
class Child extends Parent{
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94
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+
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95
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+
public void method(String val){
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96
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+
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97
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+
System.out.println(val);
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98
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+
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99
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+
}
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100
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+
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101
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+
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102
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+
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103
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+
}
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104
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+
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105
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+
class MQ{
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106
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+
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107
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+
public static void main(String[] args){
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108
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+
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109
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+
Parent p = new Child();
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110
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+
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111
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+
Child a=(Child)p;
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112
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+
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113
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+
a.method("Child");
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114
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+
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115
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+
}
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116
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+
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117
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+
}
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118
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+
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79
119
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```
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2
改正
test
CHANGED
|
@@ -37,3 +37,43 @@
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37
37
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}
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38
38
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39
39
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```
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40
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+
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41
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+
Child表示だと以下です
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|
42
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+
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|
43
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+
```java
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44
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+
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45
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+
class Parent{
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46
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+
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47
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+
public void method(){
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48
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+
|
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49
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+
System.out.println("Parent");
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50
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+
|
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51
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+
}
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52
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+
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53
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+
}
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54
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+
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55
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+
class Child extends Parent{
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56
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+
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57
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+
public void method(String val){
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58
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+
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59
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+
System.out.println(val);
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60
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+
|
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61
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+
}
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62
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+
|
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63
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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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+
|
|
67
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+
class Main{
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68
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+
|
|
69
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+
public static void main(String[] args){
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70
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+
|
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71
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+
Child p = new Child();
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72
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+
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73
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+
p.method("Child");
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74
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+
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75
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+
}
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76
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+
|
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77
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+
}
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78
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+
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79
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+
```
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1
改正
test
CHANGED
|
@@ -24,7 +24,7 @@
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24
24
|
|
|
25
25
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}
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26
26
|
|
|
27
|
-
class M
|
|
27
|
+
class Main{
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28
28
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29
29
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public static void main(String[] args){
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30
30
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