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nahi/G.java

Created November 16, 2011 12:45
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G.java
import java.util.*;
public class G {
interface F {
int calc(int x);
}
public static void main(String[] args) {
F fib = (x) -> (x < 2) ? x : fib.calc(x - 1) + fib.calc(x - 2); // fibonacci
Comparator<String> reverse = (a, b) -> -1; // reverse sort
int r = fib.calc(10);
String[] list = { "a", "b", "c" };
Arrays.sort(list, reverse);
}
}
Raw
javap.txt
% ~/java/lambda_b1314/bin/javac G.java
% ~/java/lambda_b1314/bin/javap -v G 'G$1' 'G$2'
Classfile /home/nahi/git/lambda-sandbox/G.class
Last modified Nov 16, 2011; size 567 bytes
MD5 checksum 59cc085a9dc28fc2753540686bcc2250
Compiled from "G.java"
public class G
SourceFile: "G.java"
InnerClasses:
static #15= #14 of #12; //F=class G$F of class G
static #4; //class G$2
static #2; //class G$1
minor version: 0
major version: 51
flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
#1 = Methodref #13.#26 // java/lang/Object."<init>":()V
#2 = Class #27 // G$1
#3 = Methodref #2.#26 // G$1."<init>":()V
#4 = Class #28 // G$2
#5 = Methodref #4.#26 // G$2."<init>":()V
#6 = InterfaceMethodref #14.#29 // G$F.calc:(I)I
#7 = Class #30 // java/lang/String
#8 = String #31 // a
#9 = String #32 // b
#10 = String #33 // c
#11 = Methodref #34.#35 // java/util/Arrays.sort:([Ljava/lang/Object;Ljava/util/Comparator;)V
#12 = Class #36 // G
#13 = Class #37 // java/lang/Object
#14 = Class #38 // G$F
#15 = Utf8 F
#16 = Utf8 InnerClasses
#17 = Utf8
#18 = Utf8 <init>
#19 = Utf8 ()V
#20 = Utf8 Code
#21 = Utf8 LineNumberTable
#22 = Utf8 main
#23 = Utf8 ([Ljava/lang/String;)V
#24 = Utf8 SourceFile
#25 = Utf8 G.java
#26 = NameAndType #18:#19 // "<init>":()V
#27 = Utf8 G$1
#28 = Utf8 G$2
#29 = NameAndType #39:#40 // calc:(I)I
#30 = Utf8 java/lang/String
#31 = Utf8 a
#32 = Utf8 b
#33 = Utf8 c
#34 = Class #41 // java/util/Arrays
#35 = NameAndType #42:#43 // sort:([Ljava/lang/Object;Ljava/util/Comparator;)V
#36 = Utf8 G
#37 = Utf8 java/lang/Object
#38 = Utf8 G$F
#39 = Utf8 calc
#40 = Utf8 (I)I
#41 = Utf8 java/util/Arrays
#42 = Utf8 sort
#43 = Utf8 ([Ljava/lang/Object;Ljava/util/Comparator;)V
{
public G();
flags: ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #1 // Method java/lang/Object."<init>":()V
4: return
LineNumberTable:
line 3: 0
line 5: 4
public static void main(java.lang.String[]);
flags: ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=5, args_size=1
0: new #2 // class G$1
3: dup
4: invokespecial #3 // Method G$1."<init>":()V
7: astore_1
8: new #4 // class G$2
11: dup
12: invokespecial #5 // Method G$2."<init>":()V
15: astore_2
16: aload_1
17: bipush 10
19: invokeinterface #6, 2 // InterfaceMethod G$F.calc:(I)I
24: istore_3
25: iconst_3
26: anewarray #7 // class java/lang/String
29: dup
30: iconst_0
31: ldc #8 // String a
33: aastore
34: dup
35: iconst_1
36: ldc #9 // String b
38: aastore
39: dup
40: iconst_2
41: ldc #10 // String c
43: aastore
44: astore 4
46: aload 4
48: aload_2
49: invokestatic #11 // Method java/util/Arrays.sort:([Ljava/lang/Object;Ljava/util/Comparator;)V
52: return
LineNumberTable:
line 10: 0
line 11: 8
line 12: 16
line 13: 25
line 14: 46
line 15: 52
}
Classfile /home/nahi/git/lambda-sandbox/G$1.class
Last modified Nov 16, 2011; size 425 bytes
MD5 checksum 07f691b6c2a19fb5aa2fc4e9fc77d607
Compiled from "G.java"
class G$1 implements G$F
SourceFile: "G.java"
EnclosingMethod: #16.#17 // G.main
InnerClasses:
static #3; //class G$1
static #25= #5 of #16; //F=class G$F of class G
minor version: 0
major version: 51
flags: ACC_SUPER, ACC_SYNTHETIC
Constant pool:
#1 = Methodref #4.#18 // java/lang/Object."<init>":()V
#2 = InterfaceMethodref #5.#19 // G$F.calc:(I)I
#3 = Class #20 // G$1
#4 = Class #23 // java/lang/Object
#5 = Class #24 // G$F
#6 = Utf8 <init>
#7 = Utf8 ()V
#8 = Utf8 Code
#9 = Utf8 LineNumberTable
#10 = Utf8 calc
#11 = Utf8 (I)I
#12 = Utf8 StackMapTable
#13 = Utf8 SourceFile
#14 = Utf8 G.java
#15 = Utf8 EnclosingMethod
#16 = Class #26 // G
#17 = NameAndType #27:#28 // main:([Ljava/lang/String;)V
#18 = NameAndType #6:#7 // "<init>":()V
#19 = NameAndType #10:#11 // calc:(I)I
#20 = Utf8 G$1
#21 = Utf8
#22 = Utf8 InnerClasses
#23 = Utf8 java/lang/Object
#24 = Utf8 G$F
#25 = Utf8 F
#26 = Utf8 G
#27 = Utf8 main
#28 = Utf8 ([Ljava/lang/String;)V
{
G$1();
flags:
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #1 // Method java/lang/Object."<init>":()V
4: return
LineNumberTable:
line 1: 0
public int calc(int);
flags: ACC_PUBLIC, ACC_SYNTHETIC
Code:
stack=4, locals=2, args_size=2
0: iload_1
1: iconst_2
2: if_icmpge 9
5: iload_1
6: goto 28
9: aload_0
10: iload_1
11: iconst_1
12: isub
13: invokeinterface #2, 2 // InterfaceMethod G$F.calc:(I)I
18: aload_0
19: iload_1
20: iconst_2
21: isub
22: invokeinterface #2, 2 // InterfaceMethod G$F.calc:(I)I
27: iadd
28: ireturn
LineNumberTable:
line 10: 0
StackMapTable: number_of_entries = 2
frame_type = 9 /* same */
frame_type = 82 /* same_locals_1_stack_item */
stack = [ int ]
}
Classfile /home/nahi/git/lambda-sandbox/G$2.class
Last modified Nov 16, 2011; size 612 bytes
MD5 checksum 27dc6b0b33a16878ebedcbed5e27449e
Compiled from "G.java"
class G$2 extends java.lang.Object implements java.util.Comparator<java.lang.String>
Signature: #15 // Ljava/lang/Object;Ljava/util/Comparator<Ljava/lang/String;>;
SourceFile: "G.java"
EnclosingMethod: #19.#20 // G.main
InnerClasses:
static #4; //class G$2
minor version: 0
major version: 51
flags: ACC_SUPER, ACC_SYNTHETIC
Constant pool:
#1 = Class #21 // java/lang/String
#2 = Methodref #4.#22 // G$2.compare:(Ljava/lang/String;Ljava/lang/String;)I
#3 = Methodref #5.#23 // java/lang/Object."<init>":()V
#4 = Class #24 // G$2
#5 = Class #27 // java/lang/Object
#6 = Class #28 // java/util/Comparator
#7 = Utf8 <init>
#8 = Utf8 ()V
#9 = Utf8 Code
#10 = Utf8 LineNumberTable
#11 = Utf8 compare
#12 = Utf8 (Ljava/lang/String;Ljava/lang/String;)I
#13 = Utf8 (Ljava/lang/Object;Ljava/lang/Object;)I
#14 = Utf8 Signature
#15 = Utf8 Ljava/lang/Object;Ljava/util/Comparator<Ljava/lang/String;>;
#16 = Utf8 SourceFile
#17 = Utf8 G.java
#18 = Utf8 EnclosingMethod
#19 = Class #29 // G
#20 = NameAndType #30:#31 // main:([Ljava/lang/String;)V
#21 = Utf8 java/lang/String
#22 = NameAndType #11:#12 // compare:(Ljava/lang/String;Ljava/lang/String;)I
#23 = NameAndType #7:#8 // "<init>":()V
#24 = Utf8 G$2
#25 = Utf8
#26 = Utf8 InnerClasses
#27 = Utf8 java/lang/Object
#28 = Utf8 java/util/Comparator
#29 = Utf8 G
#30 = Utf8 main
#31 = Utf8 ([Ljava/lang/String;)V
{
G$2();
flags:
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #3 // Method java/lang/Object."<init>":()V
4: return
LineNumberTable:
line 10: 0
public int compare(java.lang.String, java.lang.String);
flags: ACC_PUBLIC, ACC_SYNTHETIC
Code:
stack=1, locals=3, args_size=3
0: iconst_m1
1: ireturn
LineNumberTable:
line 11: 0
public int compare(java.lang.Object, java.lang.Object);
flags: ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
Code:
stack=3, locals=3, args_size=3
0: aload_0
1: aload_1
2: checkcast #1 // class java/lang/String
5: aload_2
6: checkcast #1 // class java/lang/String
9: invokevirtual #2 // Method compare:(Ljava/lang/String;Ljava/lang/String;)I
12: ireturn
LineNumberTable:
line 10: 0
}
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