public class org.springframework.util.function.SingletonSupplier<T> implements java.util.function.Supplier<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.springframework.util.function.SingletonSupplier
  super_class: java.lang.Object
{
  private final java.util.function.Supplier<? extends T> instanceSupplier;
    descriptor: Ljava/util/function/Supplier;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/function/Supplier<+TT;>;
    RuntimeVisibleAnnotations: 
      org.springframework.lang.Nullable()

  private final java.util.function.Supplier<? extends T> defaultSupplier;
    descriptor: Ljava/util/function/Supplier;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/function/Supplier<+TT;>;
    RuntimeVisibleAnnotations: 
      org.springframework.lang.Nullable()

  private volatile T singletonInstance;
    descriptor: Ljava/lang/Object;
    flags: (0x0042) ACC_PRIVATE, ACC_VOLATILE
    Signature: TT;
    RuntimeVisibleAnnotations: 
      org.springframework.lang.Nullable()

  public void <init>(T, java.util.function.Supplier<? extends T>);
    descriptor: (Ljava/lang/Object;Ljava/util/function/Supplier;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.springframework.util.function.SingletonSupplier this
        start local 1 // java.lang.Object instance
        start local 2 // java.util.function.Supplier defaultSupplier
         0: .line 55
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 56
            aload 0 /* this */
            aconst_null
            putfield org.springframework.util.function.SingletonSupplier.instanceSupplier:Ljava/util/function/Supplier;
         2: .line 57
            aload 0 /* this */
            aload 2 /* defaultSupplier */
            putfield org.springframework.util.function.SingletonSupplier.defaultSupplier:Ljava/util/function/Supplier;
         3: .line 58
            aload 0 /* this */
            aload 1 /* instance */
            putfield org.springframework.util.function.SingletonSupplier.singletonInstance:Ljava/lang/Object;
         4: .line 59
            return
        end local 2 // java.util.function.Supplier defaultSupplier
        end local 1 // java.lang.Object instance
        end local 0 // org.springframework.util.function.SingletonSupplier this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    5     0             this  Lorg/springframework/util/function/SingletonSupplier<TT;>;
            0    5     1         instance  TT;
            0    5     2  defaultSupplier  Ljava/util/function/Supplier<+TT;>;
    Signature: (TT;Ljava/util/function/Supplier<+TT;>;)V
    RuntimeVisibleParameterAnnotations: 
      0:
        org.springframework.lang.Nullable()
      1:
    MethodParameters:
                 Name  Flags
      instance         
      defaultSupplier  

  public void <init>(java.util.function.Supplier<? extends T>, java.util.function.Supplier<? extends T>);
    descriptor: (Ljava/util/function/Supplier;Ljava/util/function/Supplier;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.springframework.util.function.SingletonSupplier this
        start local 1 // java.util.function.Supplier instanceSupplier
        start local 2 // java.util.function.Supplier defaultSupplier
         0: .line 67
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 68
            aload 0 /* this */
            aload 1 /* instanceSupplier */
            putfield org.springframework.util.function.SingletonSupplier.instanceSupplier:Ljava/util/function/Supplier;
         2: .line 69
            aload 0 /* this */
            aload 2 /* defaultSupplier */
            putfield org.springframework.util.function.SingletonSupplier.defaultSupplier:Ljava/util/function/Supplier;
         3: .line 70
            return
        end local 2 // java.util.function.Supplier defaultSupplier
        end local 1 // java.util.function.Supplier instanceSupplier
        end local 0 // org.springframework.util.function.SingletonSupplier this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    4     0              this  Lorg/springframework/util/function/SingletonSupplier<TT;>;
            0    4     1  instanceSupplier  Ljava/util/function/Supplier<+TT;>;
            0    4     2   defaultSupplier  Ljava/util/function/Supplier<+TT;>;
    Signature: (Ljava/util/function/Supplier<+TT;>;Ljava/util/function/Supplier<+TT;>;)V
    RuntimeVisibleParameterAnnotations: 
      0:
        org.springframework.lang.Nullable()
      1:
    MethodParameters:
                  Name  Flags
      instanceSupplier  
      defaultSupplier   

  private void <init>(java.util.function.Supplier<? extends T>);
    descriptor: (Ljava/util/function/Supplier;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.springframework.util.function.SingletonSupplier this
        start local 1 // java.util.function.Supplier supplier
         0: .line 72
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 73
            aload 0 /* this */
            aload 1 /* supplier */
            putfield org.springframework.util.function.SingletonSupplier.instanceSupplier:Ljava/util/function/Supplier;
         2: .line 74
            aload 0 /* this */
            aconst_null
            putfield org.springframework.util.function.SingletonSupplier.defaultSupplier:Ljava/util/function/Supplier;
         3: .line 75
            return
        end local 1 // java.util.function.Supplier supplier
        end local 0 // org.springframework.util.function.SingletonSupplier this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0      this  Lorg/springframework/util/function/SingletonSupplier<TT;>;
            0    4     1  supplier  Ljava/util/function/Supplier<+TT;>;
    Signature: (Ljava/util/function/Supplier<+TT;>;)V
    MethodParameters:
          Name  Flags
      supplier  

  private void <init>();
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.springframework.util.function.SingletonSupplier this
        start local 1 // java.lang.Object singletonInstance
         0: .line 77
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 78
            aload 0 /* this */
            aconst_null
            putfield org.springframework.util.function.SingletonSupplier.instanceSupplier:Ljava/util/function/Supplier;
         2: .line 79
            aload 0 /* this */
            aconst_null
            putfield org.springframework.util.function.SingletonSupplier.defaultSupplier:Ljava/util/function/Supplier;
         3: .line 80
            aload 0 /* this */
            aload 1 /* singletonInstance */
            putfield org.springframework.util.function.SingletonSupplier.singletonInstance:Ljava/lang/Object;
         4: .line 81
            return
        end local 1 // java.lang.Object singletonInstance
        end local 0 // org.springframework.util.function.SingletonSupplier this
      LocalVariableTable:
        Start  End  Slot               Name  Signature
            0    5     0               this  Lorg/springframework/util/function/SingletonSupplier<TT;>;
            0    5     1  singletonInstance  TT;
    Signature: (TT;)V
    MethodParameters:
                   Name  Flags
      singletonInstance  

  public T get();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=1
        start local 0 // org.springframework.util.function.SingletonSupplier this
         0: .line 91
            aload 0 /* this */
            getfield org.springframework.util.function.SingletonSupplier.singletonInstance:Ljava/lang/Object;
            astore 1 /* instance */
        start local 1 // java.lang.Object instance
         1: .line 92
            aload 1 /* instance */
            ifnonnull 14
         2: .line 93
            aload 0 /* this */
            dup
            astore 2
            monitorenter
         3: .line 94
            aload 0 /* this */
            getfield org.springframework.util.function.SingletonSupplier.singletonInstance:Ljava/lang/Object;
            astore 1 /* instance */
         4: .line 95
            aload 1 /* instance */
            ifnonnull 10
         5: .line 96
            aload 0 /* this */
            getfield org.springframework.util.function.SingletonSupplier.instanceSupplier:Ljava/util/function/Supplier;
            ifnull 7
         6: .line 97
            aload 0 /* this */
            getfield org.springframework.util.function.SingletonSupplier.instanceSupplier:Ljava/util/function/Supplier;
            invokeinterface java.util.function.Supplier.get:()Ljava/lang/Object;
            astore 1 /* instance */
         7: .line 99
      StackMap locals: java.lang.Object org.springframework.util.function.SingletonSupplier
      StackMap stack:
            aload 1 /* instance */
            ifnonnull 9
            aload 0 /* this */
            getfield org.springframework.util.function.SingletonSupplier.defaultSupplier:Ljava/util/function/Supplier;
            ifnull 9
         8: .line 100
            aload 0 /* this */
            getfield org.springframework.util.function.SingletonSupplier.defaultSupplier:Ljava/util/function/Supplier;
            invokeinterface java.util.function.Supplier.get:()Ljava/lang/Object;
            astore 1 /* instance */
         9: .line 102
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* instance */
            putfield org.springframework.util.function.SingletonSupplier.singletonInstance:Ljava/lang/Object;
        10: .line 93
      StackMap locals:
      StackMap stack:
            aload 2
            monitorexit
        11: goto 14
      StackMap locals:
      StackMap stack: java.lang.Throwable
        12: aload 2
            monitorexit
        13: athrow
        14: .line 106
      StackMap locals:
      StackMap stack:
            aload 1 /* instance */
            areturn
        end local 1 // java.lang.Object instance
        end local 0 // org.springframework.util.function.SingletonSupplier this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   15     0      this  Lorg/springframework/util/function/SingletonSupplier<TT;>;
            1   15     1  instance  TT;
      Exception table:
        from    to  target  type
           3    11      12  any
          12    13      12  any
    Signature: ()TT;
    RuntimeVisibleAnnotations: 
      org.springframework.lang.Nullable()

  public T obtain();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // org.springframework.util.function.SingletonSupplier this
         0: .line 115
            aload 0 /* this */
            invokevirtual org.springframework.util.function.SingletonSupplier.get:()Ljava/lang/Object;
            astore 1 /* instance */
        start local 1 // java.lang.Object instance
         1: .line 116
            aload 1 /* instance */
            ifnull 2
            iconst_1
            goto 3
      StackMap locals: java.lang.Object
      StackMap stack:
         2: iconst_0
      StackMap locals:
      StackMap stack: int
         3: ldc "No instance from Supplier"
            invokestatic org.springframework.util.Assert.state:(ZLjava/lang/String;)V
         4: .line 117
            aload 1 /* instance */
            areturn
        end local 1 // java.lang.Object instance
        end local 0 // org.springframework.util.function.SingletonSupplier this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    5     0      this  Lorg/springframework/util/function/SingletonSupplier<TT;>;
            1    5     1  instance  TT;
    Signature: ()TT;

  public static <T> org.springframework.util.function.SingletonSupplier<T> of(T);
    descriptor: (Ljava/lang/Object;)Lorg/springframework/util/function/SingletonSupplier;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // java.lang.Object instance
         0: .line 127
            new org.springframework.util.function.SingletonSupplier
            dup
            aload 0 /* instance */
            invokespecial org.springframework.util.function.SingletonSupplier.<init>:(Ljava/lang/Object;)V
            areturn
        end local 0 // java.lang.Object instance
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0  instance  TT;
    Signature: <T:Ljava/lang/Object;>(TT;)Lorg/springframework/util/function/SingletonSupplier<TT;>;
    MethodParameters:
          Name  Flags
      instance  

  public static <T> org.springframework.util.function.SingletonSupplier<T> ofNullable(T);
    descriptor: (Ljava/lang/Object;)Lorg/springframework/util/function/SingletonSupplier;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // java.lang.Object instance
         0: .line 137
            aload 0 /* instance */
            ifnull 1
            new org.springframework.util.function.SingletonSupplier
            dup
            aload 0 /* instance */
            invokespecial org.springframework.util.function.SingletonSupplier.<init>:(Ljava/lang/Object;)V
            goto 2
      StackMap locals:
      StackMap stack:
         1: aconst_null
      StackMap locals:
      StackMap stack: org.springframework.util.function.SingletonSupplier
         2: areturn
        end local 0 // java.lang.Object instance
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0  instance  TT;
    Signature: <T:Ljava/lang/Object;>(TT;)Lorg/springframework/util/function/SingletonSupplier<TT;>;
    RuntimeVisibleAnnotations: 
      org.springframework.lang.Nullable()
    RuntimeVisibleParameterAnnotations: 
      0:
        org.springframework.lang.Nullable()
    MethodParameters:
          Name  Flags
      instance  

  public static <T> org.springframework.util.function.SingletonSupplier<T> of(java.util.function.Supplier<T>);
    descriptor: (Ljava/util/function/Supplier;)Lorg/springframework/util/function/SingletonSupplier;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // java.util.function.Supplier supplier
         0: .line 146
            new org.springframework.util.function.SingletonSupplier
            dup
            aload 0 /* supplier */
            invokespecial org.springframework.util.function.SingletonSupplier.<init>:(Ljava/util/function/Supplier;)V
            areturn
        end local 0 // java.util.function.Supplier supplier
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0  supplier  Ljava/util/function/Supplier<TT;>;
    Signature: <T:Ljava/lang/Object;>(Ljava/util/function/Supplier<TT;>;)Lorg/springframework/util/function/SingletonSupplier<TT;>;
    MethodParameters:
          Name  Flags
      supplier  

  public static <T> org.springframework.util.function.SingletonSupplier<T> ofNullable(java.util.function.Supplier<T>);
    descriptor: (Ljava/util/function/Supplier;)Lorg/springframework/util/function/SingletonSupplier;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // java.util.function.Supplier supplier
         0: .line 156
            aload 0 /* supplier */
            ifnull 1
            new org.springframework.util.function.SingletonSupplier
            dup
            aload 0 /* supplier */
            invokespecial org.springframework.util.function.SingletonSupplier.<init>:(Ljava/util/function/Supplier;)V
            goto 2
      StackMap locals:
      StackMap stack:
         1: aconst_null
      StackMap locals:
      StackMap stack: org.springframework.util.function.SingletonSupplier
         2: areturn
        end local 0 // java.util.function.Supplier supplier
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0  supplier  Ljava/util/function/Supplier<TT;>;
    Signature: <T:Ljava/lang/Object;>(Ljava/util/function/Supplier<TT;>;)Lorg/springframework/util/function/SingletonSupplier<TT;>;
    RuntimeVisibleAnnotations: 
      org.springframework.lang.Nullable()
    RuntimeVisibleParameterAnnotations: 
      0:
        org.springframework.lang.Nullable()
    MethodParameters:
          Name  Flags
      supplier  
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;Ljava/util/function/Supplier<TT;>;
SourceFile: "SingletonSupplier.java"