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 
public class org.eclipse.collections.impl.collection.mutable.primitive.UnmodifiableIntCollection extends org.eclipse.collections.impl.collection.mutable.primitive.AbstractUnmodifiableIntCollection
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.eclipse.collections.impl.collection.mutable.primitive.UnmodifiableIntCollection
  super_class: org.eclipse.collections.impl.collection.mutable.primitive.AbstractUnmodifiableIntCollection
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  protected void <init>(org.eclipse.collections.api.collection.primitive.MutableIntCollection);
    descriptor: (Lorg/eclipse/collections/api/collection/primitive/MutableIntCollection;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.collection.mutable.primitive.UnmodifiableIntCollection this
        start local 1 // org.eclipse.collections.api.collection.primitive.MutableIntCollection collection
         0: .line 28
            aload 0 /* this */
            aload 1 /* collection */
            invokespecial org.eclipse.collections.impl.collection.mutable.primitive.AbstractUnmodifiableIntCollection.<init>:(Lorg/eclipse/collections/api/collection/primitive/MutableIntCollection;)V
         1: .line 29
            return
        end local 1 // org.eclipse.collections.api.collection.primitive.MutableIntCollection collection
        end local 0 // org.eclipse.collections.impl.collection.mutable.primitive.UnmodifiableIntCollection this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    2     0        this  Lorg/eclipse/collections/impl/collection/mutable/primitive/UnmodifiableIntCollection;
            0    2     1  collection  Lorg/eclipse/collections/api/collection/primitive/MutableIntCollection;
    MethodParameters:
            Name  Flags
      collection  

  public static org.eclipse.collections.impl.collection.mutable.primitive.UnmodifiableIntCollection of(org.eclipse.collections.api.collection.primitive.MutableIntCollection);
    descriptor: (Lorg/eclipse/collections/api/collection/primitive/MutableIntCollection;)Lorg/eclipse/collections/impl/collection/mutable/primitive/UnmodifiableIntCollection;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.eclipse.collections.api.collection.primitive.MutableIntCollection collection
         0: .line 36
            aload 0 /* collection */
            ifnonnull 2
         1: .line 38
            new java.lang.IllegalArgumentException
            dup
            ldc "cannot create a UnmodifiableIntCollection for null"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 40
      StackMap locals:
      StackMap stack:
            new org.eclipse.collections.impl.collection.mutable.primitive.UnmodifiableIntCollection
            dup
            aload 0 /* collection */
            invokespecial org.eclipse.collections.impl.collection.mutable.primitive.UnmodifiableIntCollection.<init>:(Lorg/eclipse/collections/api/collection/primitive/MutableIntCollection;)V
            areturn
        end local 0 // org.eclipse.collections.api.collection.primitive.MutableIntCollection collection
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    3     0  collection  Lorg/eclipse/collections/api/collection/primitive/MutableIntCollection;
    MethodParameters:
            Name  Flags
      collection  

  public org.eclipse.collections.api.collection.primitive.MutableIntCollection newEmpty();
    descriptor: ()Lorg/eclipse/collections/api/collection/primitive/MutableIntCollection;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.collection.mutable.primitive.UnmodifiableIntCollection this
         0: .line 49
            new org.eclipse.collections.impl.bag.mutable.primitive.IntHashBag
            dup
            invokespecial org.eclipse.collections.impl.bag.mutable.primitive.IntHashBag.<init>:()V
            areturn
        end local 0 // org.eclipse.collections.impl.collection.mutable.primitive.UnmodifiableIntCollection this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/collection/mutable/primitive/UnmodifiableIntCollection;
}
SourceFile: "UnmodifiableIntCollection.java"