比如有个叫Shambloroni的兄弟发起了一个引起广泛共鸣的话题（收到了150个回复和投票）。beplay app 下面再举一个例子：packageforeach;?publicclassForeachTest2{??publicstaticvoidmain(String[]args)??{????Stringarr[]={"s1","s2"};?????for(Strings:arr)????{??????System.out.println(s);????}??}}反编译结果：Classfile/D:/workspace_jee/JavaTest/src/foreach/ForeachTest2.class?Lastmodified2016-2-25;size581bytes?MD5checksum51656b3d3812c5ae3977fffd897a3441?Compiledfrom"ForeachTest2.java"publicclassforeach.ForeachTest2?SourceFile:"ForeachTest2.java"?minorversion:0?majorversion:51?flags:ACC_PUBLIC,ACC_SUPER?Constantpool:??#1=Methodref?????#8.#19????//?java/lang/Object."":()V??#2=Class???????#20??????//?java/lang/String??#3=String??????#21??????//?s1??#4=String??????#22??????//?s2??#5=Fieldref?????#23.#24????//?java/lang/System.out:Ljava/io/PrintStream;??#6=Methodref?????#25.#26????//?java/io/PrintStream.println:(Ljava/lang/String;)V??#7=Class???????#27??????//?foreach/ForeachTest2??#8=Class???????#28??????//?java/lang/Object??#9=Utf8????????#10=Utf8???????()V?#11=Utf8???????Code?#12=Utf8???????LineNumberTable?#13=Utf8???????main?#14=Utf8???????([Ljava/lang/String;)V?#15=Utf8???????StackMapTable?#16=Class???????#29??????//?"[Ljava/lang/String;"?#17=Utf8???????SourceFile?#18=Utf8???????ForeachTest2.java?#19=NameAndType????#9:#10????//?"":()V?#20=Utf8???????java/lang/String?#21=Utf8???????s1?#22=Utf8???????s2?#23=Class???????#30??????//?java/lang/System?#24=NameAndType????#31:#32????//?out:Ljava/io/PrintStream;?#25=Class???????#33??????//?java/io/PrintStream?#26=NameAndType????#34:#35????//?println:(Ljava/lang/String;)V?#27=Utf8???????foreach/ForeachTest2?#28=Utf8???????java/lang/Object?#29=Utf8???????[Ljava/lang/String;?#30=Utf8???????java/lang/System?#31=Utf8???????out?#32=Utf8???????Ljava/io/PrintStream;?#33=Utf8???????java/io/PrintStream?#34=Utf8???????println?#35=Utf8???????(Ljava/lang/String;)V{?publicforeach.ForeachTest2();??flags:ACC_PUBLIC???Code:???stack=1,locals=1,args_size=1?????0:aload_0?????????1:invokespecial#1?????????//Methodjava/lang/Object."":()V?????4:return???????LineNumberTable:????line3:0??publicstaticvoidmain(java.lang.String[]);??flags:ACC_PUBLIC,ACC_STATIC???Code:???stack=4,locals=6,args_size=1?????0:iconst_2????????1:anewarray??#2?????????//classjava/lang/String?????4:dup???????????5:iconst_0????????6:ldc?????#3?????????//Strings1?????8:aastore?????????9:dup??????????10:iconst_1???????11:ldc?????#4?????????//Strings2????13:aastore????????14:astore_1???????15:aload_1????????16:astore_2???????17:aload_2????????18:arraylength??????19:istore_3???????20:iconst_0???????21:istore????4????23:iload????4????25:iload_3????????26:if_icmpge??49????29:aload_2????????30:iload????4????32:aaload????????33:astore????5????35:getstatic??#5?????????//Fieldjava/lang/System.out:Ljava/io/PrintStream;????38:aload????5????40:invokevirtual#6?????????//Methodjava/io/PrintStream.println:(Ljava/lang/String;)V????43:iinc?????4,1????46:goto?????23????49:return???????LineNumberTable:????line7:0????line9:15????line11:35????line9:43????line13:49???StackMapTable:number_of_entries=2??????frame_type=255/*full_frame*/?????offset_delta=23?????locals=[class"[Ljava/lang/String;",class"[Ljava/lang/String;",class"[Ljava/lang/String;",int,int]?????stack=[]??????frame_type=248/*chop*/?????offset_delta=25}看不懂？同样没关系~这里可以注意到数组的foreach语法糖并没有采用Iterable实现转换。当90后们开始集体面临“谢顶”危机，80后们手里的保温杯泡上了枸杞，当油腻的中年大叔和中年少女过上了佛系生活，唱着“freestyle”的老铁们集体被中年危机扎得小心脏稀碎一地，伴随着90后集体成年，80后纠结二胎，2018的征程已经启航。去年底的时候，老公告诉我他升职加薪了，另外城区的拆迁补偿款也已到账，我才向家人提出再生一个的想法。JVM中，几乎所有的函数调用都是虚函数调用。