public final class java.util.UUID implements java.io.Serializable, java.lang.Comparable<java.util.UUID>
minor version: 0
major version: 59
flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
this_class: java.util.UUID
super_class: java.lang.Object
{
private static final long serialVersionUID;
descriptor: J
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
ConstantValue: -4856846361193249489
private final long mostSigBits;
descriptor: J
flags: (0x0012) ACC_PRIVATE, ACC_FINAL
private final long leastSigBits;
descriptor: J
flags: (0x0012) ACC_PRIVATE, ACC_FINAL
private static final jdk.internal.misc.JavaLangAccess jla;
descriptor: Ljdk/internal/misc/JavaLangAccess;
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
static final boolean $assertionsDisabled;
descriptor: Z
flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC
static void <clinit>();
descriptor: ()V
flags: (0x0008) ACC_STATIC
Code:
stack=1, locals=0, args_size=0
0: ldc Ljava/util/UUID;
invokevirtual java.lang.Class.desiredAssertionStatus:()Z
ifne 1
iconst_1
goto 2
StackMap locals:
StackMap stack:
1: iconst_0
StackMap locals:
StackMap stack: int
2: putstatic java.util.UUID.$assertionsDisabled:Z
3: invokestatic jdk.internal.misc.SharedSecrets.getJavaLangAccess:()Ljdk/internal/misc/JavaLangAccess;
putstatic java.util.UUID.jla:Ljdk/internal/misc/JavaLangAccess;
return
LocalVariableTable:
Start End Slot Name Signature
private void <init>(byte[]);
descriptor: ([B)V
flags: (0x0002) ACC_PRIVATE
Code:
stack=4, locals=7, args_size=2
start local 0 start local 1 0: aload 0
invokespecial java.lang.Object.<init>:()V
1: lconst_0
lstore 2
start local 2 2: lconst_0
lstore 4
start local 4 3: getstatic java.util.UUID.$assertionsDisabled:Z
ifne 4
aload 1
arraylength
bipush 16
if_icmpeq 4
new java.lang.AssertionError
dup
ldc "data must be 16 bytes in length"
invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
athrow
4: StackMap locals: java.util.UUID byte[] long long
StackMap stack:
iconst_0
istore 6
start local 6 5: goto 8
6: StackMap locals: int
StackMap stack:
lload 2
bipush 8
lshl
aload 1
iload 6
baload
sipush 255
iand
i2l
lor
lstore 2
7: iinc 6 1
StackMap locals:
StackMap stack:
8: iload 6
bipush 8
if_icmplt 6
end local 6 9: bipush 8
istore 6
start local 6 10: goto 13
11: StackMap locals:
StackMap stack:
lload 4
bipush 8
lshl
aload 1
iload 6
baload
sipush 255
iand
i2l
lor
lstore 4
12: iinc 6 1
StackMap locals:
StackMap stack:
13: iload 6
bipush 16
if_icmplt 11
end local 6 14: aload 0
lload 2
putfield java.util.UUID.mostSigBits:J
15: aload 0
lload 4
putfield java.util.UUID.leastSigBits:J
16: return
end local 4 end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 17 0 this Ljava/util/UUID;
0 17 1 data [B
2 17 2 msb J
3 17 4 lsb J
5 9 6 i I
10 14 6 i I
MethodParameters:
Name Flags
data
public void <init>(long, long);
descriptor: (JJ)V
flags: (0x0001) ACC_PUBLIC
Code:
stack=3, locals=5, args_size=3
start local 0 start local 1 start local 3 0: aload 0
invokespecial java.lang.Object.<init>:()V
1: aload 0
lload 1
putfield java.util.UUID.mostSigBits:J
2: aload 0
lload 3
putfield java.util.UUID.leastSigBits:J
3: return
end local 3 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 4 0 this Ljava/util/UUID;
0 4 1 mostSigBits J
0 4 3 leastSigBits J
MethodParameters:
Name Flags
mostSigBits
leastSigBits
public static java.util.UUID randomUUID();
descriptor: ()Ljava/util/UUID;
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=2, args_size=0
0: getstatic java.util.UUID$Holder.numberGenerator:Ljava/security/SecureRandom;
astore 0
start local 0 1: bipush 16
newarray 8
astore 1
start local 1 2: aload 0
aload 1
invokevirtual java.security.SecureRandom.nextBytes:([B)V
3: aload 1
bipush 6
dup2
baload
bipush 15
iand
i2b
bastore
4: aload 1
bipush 6
dup2
baload
bipush 64
ior
i2b
bastore
5: aload 1
bipush 8
dup2
baload
bipush 63
iand
i2b
bastore
6: aload 1
bipush 8
dup2
baload
sipush 128
ior
i2b
bastore
7: new java.util.UUID
dup
aload 1
invokespecial java.util.UUID.<init>:([B)V
areturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
1 8 0 ng Ljava/security/SecureRandom;
2 8 1 randomBytes [B
public static java.util.UUID nameUUIDFromBytes(byte[]);
descriptor: ([B)Ljava/util/UUID;
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=3, args_size=1
start local 0 0: ldc "MD5"
invokestatic java.security.MessageDigest.getInstance:(Ljava/lang/String;)Ljava/security/MessageDigest;
astore 1
start local 1 1: goto 4
end local 1 StackMap locals:
StackMap stack: java.security.NoSuchAlgorithmException
2: astore 2
start local 2 3: new java.lang.InternalError
dup
ldc "MD5 not supported"
aload 2
invokespecial java.lang.InternalError.<init>:(Ljava/lang/String;Ljava/lang/Throwable;)V
athrow
end local 2 start local 1 4: StackMap locals: java.security.MessageDigest
StackMap stack:
aload 1
aload 0
invokevirtual java.security.MessageDigest.digest:([B)[B
astore 2
start local 2 5: aload 2
bipush 6
dup2
baload
bipush 15
iand
i2b
bastore
6: aload 2
bipush 6
dup2
baload
bipush 48
ior
i2b
bastore
7: aload 2
bipush 8
dup2
baload
bipush 63
iand
i2b
bastore
8: aload 2
bipush 8
dup2
baload
sipush 128
ior
i2b
bastore
9: new java.util.UUID
dup
aload 2
invokespecial java.util.UUID.<init>:([B)V
areturn
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 10 0 name [B
1 2 1 md Ljava/security/MessageDigest;
4 10 1 md Ljava/security/MessageDigest;
3 4 2 nsae Ljava/security/NoSuchAlgorithmException;
5 10 2 md5Bytes [B
Exception table:
from to target type
0 1 2 Class java.security.NoSuchAlgorithmException
MethodParameters:
Name Flags
name
public static java.util.UUID fromString(java.lang.String);
descriptor: (Ljava/lang/String;)Ljava/util/UUID;
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=6, locals=11, args_size=1
start local 0 0: aload 0
invokevirtual java.lang.String.length:()I
istore 1
start local 1 1: iload 1
bipush 36
if_icmple 3
2: new java.lang.IllegalArgumentException
dup
ldc "UUID string too large"
invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
athrow
3: StackMap locals: int
StackMap stack:
aload 0
bipush 45
iconst_0
invokevirtual java.lang.String.indexOf:(II)I
istore 2
start local 2 4: aload 0
bipush 45
iload 2
iconst_1
iadd
invokevirtual java.lang.String.indexOf:(II)I
istore 3
start local 3 5: aload 0
bipush 45
iload 3
iconst_1
iadd
invokevirtual java.lang.String.indexOf:(II)I
istore 4
start local 4 6: aload 0
bipush 45
iload 4
iconst_1
iadd
invokevirtual java.lang.String.indexOf:(II)I
istore 5
start local 5 7: aload 0
bipush 45
iload 5
iconst_1
iadd
invokevirtual java.lang.String.indexOf:(II)I
istore 6
start local 6 8: iload 5
iflt 9
iload 6
iflt 10
9: StackMap locals: java.lang.String int int int int int int
StackMap stack:
new java.lang.IllegalArgumentException
dup
new java.lang.StringBuilder
dup
ldc "Invalid UUID string: "
invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
aload 0
invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
athrow
10: StackMap locals:
StackMap stack:
aload 0
iconst_0
iload 2
bipush 16
invokestatic java.lang.Long.parseLong:(Ljava/lang/CharSequence;III)J
ldc 4294967295
land
lstore 7
start local 7 11: lload 7
bipush 16
lshl
lstore 7
12: lload 7
aload 0
iload 2
iconst_1
iadd
iload 3
bipush 16
invokestatic java.lang.Long.parseLong:(Ljava/lang/CharSequence;III)J
ldc 65535
land
lor
lstore 7
13: lload 7
bipush 16
lshl
lstore 7
14: lload 7
aload 0
iload 3
iconst_1
iadd
iload 4
bipush 16
invokestatic java.lang.Long.parseLong:(Ljava/lang/CharSequence;III)J
ldc 65535
land
lor
lstore 7
15: aload 0
iload 4
iconst_1
iadd
iload 5
bipush 16
invokestatic java.lang.Long.parseLong:(Ljava/lang/CharSequence;III)J
ldc 65535
land
lstore 9
start local 9 16: lload 9
bipush 48
lshl
lstore 9
17: lload 9
aload 0
iload 5
iconst_1
iadd
iload 1
bipush 16
invokestatic java.lang.Long.parseLong:(Ljava/lang/CharSequence;III)J
ldc 281474976710655
land
lor
lstore 9
18: new java.util.UUID
dup
lload 7
lload 9
invokespecial java.util.UUID.<init>:(JJ)V
areturn
end local 9 end local 7 end local 6 end local 5 end local 4 end local 3 end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 19 0 name Ljava/lang/String;
1 19 1 len I
4 19 2 dash1 I
5 19 3 dash2 I
6 19 4 dash3 I
7 19 5 dash4 I
8 19 6 dash5 I
11 19 7 mostSigBits J
16 19 9 leastSigBits J
MethodParameters:
Name Flags
name
public long getLeastSignificantBits();
descriptor: ()J
flags: (0x0001) ACC_PUBLIC
Code:
stack=2, locals=1, args_size=1
start local 0 0: aload 0
getfield java.util.UUID.leastSigBits:J
lreturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Ljava/util/UUID;
public long getMostSignificantBits();
descriptor: ()J
flags: (0x0001) ACC_PUBLIC
Code:
stack=2, locals=1, args_size=1
start local 0 0: aload 0
getfield java.util.UUID.mostSigBits:J
lreturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Ljava/util/UUID;
public int version();
descriptor: ()I
flags: (0x0001) ACC_PUBLIC
Code:
stack=4, locals=1, args_size=1
start local 0 0: aload 0
getfield java.util.UUID.mostSigBits:J
bipush 12
lshr
ldc 15
land
l2i
ireturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Ljava/util/UUID;
public int variant();
descriptor: ()I
flags: (0x0001) ACC_PUBLIC
Code:
stack=7, locals=1, args_size=1
start local 0 0: aload 0
getfield java.util.UUID.leastSigBits:J
ldc 64
aload 0
getfield java.util.UUID.leastSigBits:J
bipush 62
lushr
lsub
l2i
lushr
1: aload 0
getfield java.util.UUID.leastSigBits:J
bipush 63
lshr
2: land
l2i
ireturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 3 0 this Ljava/util/UUID;
public long timestamp();
descriptor: ()J
flags: (0x0001) ACC_PUBLIC
Code:
stack=6, locals=1, args_size=1
start local 0 0: aload 0
invokevirtual java.util.UUID.version:()I
iconst_1
if_icmpeq 2
1: new java.lang.UnsupportedOperationException
dup
ldc "Not a time-based UUID"
invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
athrow
2: StackMap locals:
StackMap stack:
aload 0
getfield java.util.UUID.mostSigBits:J
ldc 4095
land
bipush 48
lshl
3: aload 0
getfield java.util.UUID.mostSigBits:J
bipush 16
lshr
ldc 65535
land
bipush 32
lshl
4: lor
5: aload 0
getfield java.util.UUID.mostSigBits:J
bipush 32
lushr
6: lor
lreturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 7 0 this Ljava/util/UUID;
public int clockSequence();
descriptor: ()I
flags: (0x0001) ACC_PUBLIC
Code:
stack=4, locals=1, args_size=1
start local 0 0: aload 0
invokevirtual java.util.UUID.version:()I
iconst_1
if_icmpeq 2
1: new java.lang.UnsupportedOperationException
dup
ldc "Not a time-based UUID"
invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
athrow
2: StackMap locals:
StackMap stack:
aload 0
getfield java.util.UUID.leastSigBits:J
ldc 4611404543450677248
land
bipush 48
lushr
l2i
ireturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 3 0 this Ljava/util/UUID;
public long node();
descriptor: ()J
flags: (0x0001) ACC_PUBLIC
Code:
stack=4, locals=1, args_size=1
start local 0 0: aload 0
invokevirtual java.util.UUID.version:()I
iconst_1
if_icmpeq 2
1: new java.lang.UnsupportedOperationException
dup
ldc "Not a time-based UUID"
invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
athrow
2: StackMap locals:
StackMap stack:
aload 0
getfield java.util.UUID.leastSigBits:J
ldc 281474976710655
land
lreturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 3 0 this Ljava/util/UUID;
public java.lang.String toString();
descriptor: ()Ljava/lang/String;
flags: (0x0001) ACC_PUBLIC
Code:
stack=5, locals=1, args_size=1
start local 0 0: getstatic java.util.UUID.jla:Ljdk/internal/misc/JavaLangAccess;
aload 0
getfield java.util.UUID.leastSigBits:J
aload 0
getfield java.util.UUID.mostSigBits:J
invokeinterface jdk.internal.misc.JavaLangAccess.fastUUID:(JJ)Ljava/lang/String;
areturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Ljava/util/UUID;
public int hashCode();
descriptor: ()I
flags: (0x0001) ACC_PUBLIC
Code:
stack=4, locals=3, args_size=1
start local 0 0: aload 0
getfield java.util.UUID.mostSigBits:J
aload 0
getfield java.util.UUID.leastSigBits:J
lxor
lstore 1
start local 1 1: lload 1
bipush 32
lshr
l2i
lload 1
l2i
ixor
ireturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 2 0 this Ljava/util/UUID;
1 2 1 hilo J
public boolean equals(java.lang.Object);
descriptor: (Ljava/lang/Object;)Z
flags: (0x0001) ACC_PUBLIC
Code:
stack=4, locals=3, args_size=2
start local 0 start local 1 0: aload 1
ifnull 1
aload 1
invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
ldc Ljava/util/UUID;
if_acmpeq 2
1: StackMap locals:
StackMap stack:
iconst_0
ireturn
2: StackMap locals:
StackMap stack:
aload 1
checkcast java.util.UUID
astore 2
start local 2 3: aload 0
getfield java.util.UUID.mostSigBits:J
aload 2
getfield java.util.UUID.mostSigBits:J
lcmp
ifne 6
4: aload 0
getfield java.util.UUID.leastSigBits:J
aload 2
getfield java.util.UUID.leastSigBits:J
lcmp
ifne 6
5: iconst_1
ireturn
StackMap locals: java.util.UUID
StackMap stack:
6: iconst_0
ireturn
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 7 0 this Ljava/util/UUID;
0 7 1 obj Ljava/lang/Object;
3 7 2 id Ljava/util/UUID;
MethodParameters:
Name Flags
obj
public int compareTo(java.util.UUID);
descriptor: (Ljava/util/UUID;)I
flags: (0x0001) ACC_PUBLIC
Code:
stack=4, locals=2, args_size=2
start local 0 start local 1 0: aload 0
getfield java.util.UUID.mostSigBits:J
aload 1
getfield java.util.UUID.mostSigBits:J
lcmp
ifge 1
iconst_m1
goto 5
1: StackMap locals:
StackMap stack:
aload 0
getfield java.util.UUID.mostSigBits:J
aload 1
getfield java.util.UUID.mostSigBits:J
lcmp
ifle 2
iconst_1
goto 5
2: StackMap locals:
StackMap stack:
aload 0
getfield java.util.UUID.leastSigBits:J
aload 1
getfield java.util.UUID.leastSigBits:J
lcmp
ifge 3
iconst_m1
goto 5
3: StackMap locals:
StackMap stack:
aload 0
getfield java.util.UUID.leastSigBits:J
aload 1
getfield java.util.UUID.leastSigBits:J
lcmp
ifle 4
iconst_1
goto 5
4: StackMap locals:
StackMap stack:
iconst_0
5: StackMap locals:
StackMap stack: int
ireturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 6 0 this Ljava/util/UUID;
0 6 1 val Ljava/util/UUID;
MethodParameters:
Name Flags
val
public int compareTo(java.lang.Object);
descriptor: (Ljava/lang/Object;)I
flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
Code:
stack=2, locals=2, args_size=2
0: aload 0
aload 1
checkcast java.util.UUID
invokevirtual java.util.UUID.compareTo:(Ljava/util/UUID;)I
ireturn
LocalVariableTable:
Start End Slot Name Signature
}
Signature: Ljava/lang/Object;Ljava/io/Serializable;Ljava/lang/Comparable<Ljava/util/UUID;>;
SourceFile: "UUID.java"
NestMembers:
java.util.UUID$Holder
InnerClasses:
private Holder = java.util.UUID$Holder of java.util.UUID