StackOverflow2013

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PO
primarykey
Id
16409233
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
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CommunityOwnedDate
CreationDate
2013-05-07T00:11:55.383
FavoriteCount
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LastActivityDate
2013-05-07T03:29:01.953
LastEditDate
2013-05-07T03:29:01.953
LastEditorUserId
139010
OwnerUserId
139010
ParentId
16409210
PostTypeId
2
Score
5
ViewCount
0
LastEditorDisplayName
text
Body
<blockquote> But can any body tell me what's the difference between Inner.redo1() and Inner.redo2()? </blockquote> <code>Inner.redo1()</code> and <code>Inner.redo2()</code> are indeed the same. There is no semantic or functional difference. <code>redo2</code> is more explicit. That is all. Let's compare each method's bytecode: <pre><code>λ Desktop javap -c Outer.Inner Compiled from "Outer.java" public class Outer$Inner extends java.lang.Object{ final Outer this$0; public Outer$Inner(Outer); Code: 0: aload_0 1: aload_1 2: putfield #1; //Field this$0:LOuter; 5: aload_0 6: invokespecial #2; //Method java/lang/Object."<init>":()V 9: return public void redo1(); Code: 0: aload_0 1: getfield #1; //Field this$0:LOuter; 4: invokevirtual #3; //Method Outer.print:()V 7: return public void redo2(); Code: 0: aload_0 1: getfield #1; //Field this$0:LOuter; 4: invokevirtual #3; //Method Outer.print:()V 7: return } </code></pre> Same bytecode, same end result, same everything. <hr> <blockquote> Why does it use ArrayList.this.remove(lastRet); but not remove(lastRet); ? </blockquote> To disambiguate which class' <code>remove()</code> method should actually be called. It is actually necessary in this case! Without explicitly specifying <code>ArrayList.this.remove(lastRet)</code>, the code does not compile: <pre><code>λ Desktop javac java/util/ArrayList.java java/util/ArrayList.java:810: remove() in java.util.ArrayList<E>.Itr cannot be applied to (int) remove(lastRet); ^ 1 error </code></pre>
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1. POAccessing outer class from inner class in java
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1. PTAnswer
UserLastEditorUserId
1. USMatt Ball
UserOwnerUserId
1. USMatt Ball
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1. POAccessing outer class from inner class in java
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