https://github.com/eclipse/eclipse-collections/eclipse-collections: Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
  • Craig P. Motlin
  • Donald Raab
  • Mohammad A. Rezaei
  • Hiroshi Ito
  • Nikhil J. Nanivadekar 
final class org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy<T> implements org.eclipse.collections.api.block.HashingStrategy<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy
  super_class: java.lang.Object
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  private final org.eclipse.collections.api.block.HashingStrategy<T> nonNullSafeStrategy;
    descriptor: Lorg/eclipse/collections/api/block/HashingStrategy;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Lorg/eclipse/collections/api/block/HashingStrategy<TT;>;

  private void <init>(org.eclipse.collections.api.block.HashingStrategy<T>);
    descriptor: (Lorg/eclipse/collections/api/block/HashingStrategy;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy this
        start local 1 // org.eclipse.collections.api.block.HashingStrategy nonNullSafeStrategy
         0: .line 149
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 151
            aload 0 /* this */
            aload 1 /* nonNullSafeStrategy */
            putfield org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy.nonNullSafeStrategy:Lorg/eclipse/collections/api/block/HashingStrategy;
         2: .line 152
            return
        end local 1 // org.eclipse.collections.api.block.HashingStrategy nonNullSafeStrategy
        end local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy this
      LocalVariableTable:
        Start  End  Slot                 Name  Signature
            0    3     0                 this  Lorg/eclipse/collections/impl/block/factory/HashingStrategies$NullSafeHashingStrategy<TT;>;
            0    3     1  nonNullSafeStrategy  Lorg/eclipse/collections/api/block/HashingStrategy<TT;>;
    Signature: (Lorg/eclipse/collections/api/block/HashingStrategy<TT;>;)V
    MethodParameters:
                     Name  Flags
      nonNullSafeStrategy  

  public int computeHashCode();
    descriptor: (Ljava/lang/Object;)I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy this
        start local 1 // java.lang.Object object
         0: .line 157
            aload 1 /* object */
            ifnonnull 1
            iconst_0
            goto 2
      StackMap locals:
      StackMap stack:
         1: aload 0 /* this */
            getfield org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy.nonNullSafeStrategy:Lorg/eclipse/collections/api/block/HashingStrategy;
            aload 1 /* object */
            invokeinterface org.eclipse.collections.api.block.HashingStrategy.computeHashCode:(Ljava/lang/Object;)I
      StackMap locals:
      StackMap stack: int
         2: ireturn
        end local 1 // java.lang.Object object
        end local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    3     0    this  Lorg/eclipse/collections/impl/block/factory/HashingStrategies$NullSafeHashingStrategy<TT;>;
            0    3     1  object  TT;
    Signature: (TT;)I
    MethodParameters:
        Name  Flags
      object  

  public boolean equals(T, );
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy this
        start local 1 // java.lang.Object object1
        start local 2 // java.lang.Object object2
         0: .line 163
            aload 1 /* object1 */
            ifnull 1
            aload 2 /* object2 */
            ifnonnull 3
         1: .line 164
      StackMap locals:
      StackMap stack:
            aload 1 /* object1 */
            aload 2 /* object2 */
            if_acmpne 2
            iconst_1
            goto 4
      StackMap locals:
      StackMap stack:
         2: iconst_0
            goto 4
         3: .line 165
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy.nonNullSafeStrategy:Lorg/eclipse/collections/api/block/HashingStrategy;
            aload 1 /* object1 */
            aload 2 /* object2 */
            invokeinterface org.eclipse.collections.api.block.HashingStrategy.equals:(Ljava/lang/Object;Ljava/lang/Object;)Z
         4: .line 163
      StackMap locals:
      StackMap stack: int
            ireturn
        end local 2 // java.lang.Object object2
        end local 1 // java.lang.Object object1
        end local 0 // org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    5     0     this  Lorg/eclipse/collections/impl/block/factory/HashingStrategies$NullSafeHashingStrategy<TT;>;
            0    5     1  object1  TT;
            0    5     2  object2  TT;
    Signature: (TT;TT;)Z
    MethodParameters:
         Name  Flags
      object1  
      object2  
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;Lorg/eclipse/collections/api/block/HashingStrategy<TT;>;
SourceFile: "HashingStrategies.java"
NestHost: org.eclipse.collections.impl.block.factory.HashingStrategies
InnerClasses:
  private final NullSafeHashingStrategy = org.eclipse.collections.impl.block.factory.HashingStrategies$NullSafeHashingStrategy of org.eclipse.collections.impl.block.factory.HashingStrategies