質問編集履歴
1
改行
test
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File without changes
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test
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@@ -18,11 +18,15 @@
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```Java
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package aa;
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class a {
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}
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@@ -30,17 +34,31 @@
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public class b extends a {
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public static void main(String[] args) {
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a a = new a();
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b b = new b();
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b = (b) a;
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}
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}
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-
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```
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