回答編集履歴
4
改正
answer
CHANGED
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@@ -50,7 +50,7 @@
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50
50
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}
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51
51
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52
52
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}
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53
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-
class
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53
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+
class Main{
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54
54
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public static void main(String[] args){
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55
55
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Parent p = new Child();
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56
56
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Child a=(Child)p;
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3
改正
answer
CHANGED
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@@ -37,4 +37,24 @@
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37
37
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p.method("Child");
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38
38
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}
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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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+
または
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42
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+
class Parent{
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43
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+
public void method(){
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44
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+
System.out.println("Parent");
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45
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+
}
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46
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+
}
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47
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+
class Child extends Parent{
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48
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+
public void method(String val){
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49
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+
System.out.println(val);
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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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+
class MQ{
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54
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+
public static void main(String[] args){
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55
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+
Parent p = new Child();
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56
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+
Child a=(Child)p;
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57
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+
a.method("Child");
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58
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+
}
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59
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+
}
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40
60
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```
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2
改正
answer
CHANGED
|
@@ -17,4 +17,24 @@
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17
17
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p.method();
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18
18
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}
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19
19
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}
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20
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+
```
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21
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+
Child表示だと以下です
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22
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+
```java
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23
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+
class Parent{
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24
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+
public void method(){
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25
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+
System.out.println("Parent");
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26
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+
}
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27
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+
}
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28
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+
class Child extends Parent{
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29
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+
public void method(String val){
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30
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+
System.out.println(val);
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31
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+
}
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32
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+
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33
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+
}
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34
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+
class Main{
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35
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+
public static void main(String[] args){
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36
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+
Child p = new Child();
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37
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+
p.method("Child");
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38
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+
}
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39
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+
}
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20
40
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```
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1
改正
answer
CHANGED
|
@@ -11,7 +11,7 @@
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11
11
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}
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12
12
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13
13
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}
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14
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-
class
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14
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+
class Main{
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15
15
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public static void main(String[] args){
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16
16
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Parent p = new Child();
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17
17
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p.method();
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