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niuhaijun wants to merge 1 commit into giantray:master from niuhaijun:patch-1

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Update java-operator.md #111

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Update java-operator.md

niuhaijun Sep 6, 2019

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6 changes: 3 additions & 3 deletions contents/java-operator.md

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Original file line number	Diff line number	Diff line change
		@@ -1,6 +1,6 @@
	##Java += 操作符实质
	##Java += 操作符实质

	###问题
	###问题
		我之前以为:
		i += j 等同于 i = i + j;
		但假设有:
Expand All		@@ -11,7 +11,7 @@ long j = 8;
		这时 i = i + j 不能编译,但 i += j 却可以编译。这说明两者还是有差别的
		这是否意味着,i += j,实际是等同于 i= (type of i) (i + j)呢?

	###回答
	###回答
		这个问题,其实官方文档中已经解答了。请看这里 [§15.26.2 Compound Assignment Operators](http://docs.oracle.com/javase/specs/jls/se8/html/jls-15.html#jls-15.26.2)


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