关于Class中的Signature属性

interface IA{}interface IB{}class CA{}class TP extends CA implements IA,IB{}class ParentClass<T>{}interface ParentIA{}interface ParentIB{}// 出现在ClassFile的attributes属性中的Signature属性// <T:Lcom/test18/CA;:Lcom/test18/IA;:Lcom/test18/IB;E:TT;>// Lcom/test18/ParentClass<Ljava/lang/String;>;// Lcom/test18/ParentIA;Lcom/test18/ParentIB;public class TestClass<T extends CA&IA&IB,E extends T> extends ParentClass<String> implements ParentIA,ParentIB{// 出现在methods属性的attributes的Signature属性// <A:Lcom/test18/CA;:Lcom/test18/IA;:Lcom/test18/IB;B:TA;>// (TA;Ljava/util/List<+TB;>;)// V public <A extends CA&IA&IB,B extends A> void mymethod(A a,List<? extends B> list){ // 仅出现在常量池中，为什么？ // Ljava/util/List<Ljava/io/InputStream;>; List<InputStream> x = null; // Ljava/util/List<-Ljava/io/InputStream;>; List<? super InputStream> y = null; }}

Classfile /C:/TestClass.class Last modified 2018-7-5; size 1058 bytes MD5 checksum d9dc89733c2ea9a57bbced4b4c20f998 Compiled from "TestClass.java"public class com.test18.TestClass<T extends com.test18.CA & com.test18.IA & com.test18.IB, E extends T> extends com.test18.ParentClass<java.lang.String> implements com.test18.ParentIA, com.test18.ParentIB Signature: #29 // <T:Lcom/test18/CA;:Lcom/test18/IA;:Lcom/test18/IB;E:TT;>Lcom/test18/ParentClass<Ljava/lang/String;>;Lcom/test18/ParentIA;Lcom/test18/ParentIB; SourceFile: "TestClass.java" minor version: 0 major version: 51 flags: ACC_PUBLIC, ACC_SUPERConstant pool: #1 = Methodref #3.#32 // com/test18/ParentClass."<init>":()V #2 = Class #33 // com/test18/TestClass #3 = Class #34 // com/test18/ParentClass #4 = Class #35 // com/test18/ParentIA #5 = Class #36 // com/test18/ParentIB #6 = Utf8 <init> #7 = Utf8 ()V #8 = Utf8 Code #9 = Utf8 LineNumberTable #10 = Utf8 LocalVariableTable #11 = Utf8 this #12 = Utf8 Lcom/test18/TestClass; #13 = Utf8 LocalVariableTypeTable #14 = Utf8 Lcom/test18/TestClass<TT;TE;>; #15 = Utf8 mymethod #16 = Utf8 (Lcom/test18/CA;Ljava/util/List;)V #17 = Utf8 a #18 = Utf8 Lcom/test18/CA; #19 = Utf8 list #20 = Utf8 Ljava/util/List; #21 = Utf8 x #22 = Utf8 y #23 = Utf8 TA; #24 = Utf8 Ljava/util/List<+TB;>; #25 = Utf8 Ljava/util/List<Ljava/io/InputStream;>; #26 = Utf8 Ljava/util/List<-Ljava/io/InputStream;>; #27 = Utf8 Signature #28 = Utf8 <A:Lcom/test18/CA;:Lcom/test18/IA;:Lcom/test18/IB;B:TA;>(TA;Ljava/util/List<+TB;>;)V #29 = Utf8 <T:Lcom/test18/CA;:Lcom/test18/IA;:Lcom/test18/IB;E:TT;>Lcom/test18/ParentClass<Ljava/lang/String;>;Lcom/test18/ParentIA;Lcom/test18/ParentIB; #30 = Utf8 SourceFile #31 = Utf8 TestClass.java #32 = NameAndType #6:#7 // "<init>":()V #33 = Utf8 com/test18/TestClass #34 = Utf8 com/test18/ParentClass #35 = Utf8 com/test18/ParentIA #36 = Utf8 com/test18/ParentIB{ public com.test18.TestClass(); flags: ACC_PUBLIC Code: stack=1, locals=1, args_size=1 0: aload_0 1: invokespecial #1 // Method com/test18/ParentClass."<init>":()V 4: return LineNumberTable: line 53: 0 LocalVariableTable: Start Length Slot Name Signature 0 5 0 this Lcom/test18/TestClass; LocalVariableTypeTable: Start Length Slot Name Signature 0 5 0 this Lcom/test18/TestClass<TT;TE;>; public <A extends com/test18/CA & com/test18/IA & com/test18/IB, B extends A> void mymethod(A, java.util.List<? extends B>); flags: ACC_PUBLIC Code: stack=1, locals=5, args_size=3 0: aconst_null 1: astore_3 2: aconst_null 3: astore 4 5: return LineNumberTable: line 60: 0 line 61: 2 line 62: 5 LocalVariableTable: Start Length Slot Name Signature 0 6 0 this Lcom/test18/TestClass; 0 6 1 a Lcom/test18/CA; 0 6 2 list Ljava/util/List; 2 4 3 x Ljava/util/List; 5 1 4 y Ljava/util/List; LocalVariableTypeTable: Start Length Slot Name Signature 0 6 0 this Lcom/test18/TestClass<TT;TE;>; 0 6 1 a TA; 0 6 2 list Ljava/util/List<+TB;>; 2 4 3 x Ljava/util/List<Ljava/io/InputStream;>; 5 1 4 y Ljava/util/List<-Ljava/io/InputStream;>; Signature: #28 // <A:Lcom/test18/CA;:Lcom/test18/IA;:Lcom/test18/IB;B:TA;>(TA;Ljava/util/List<+TB;>;)V}