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 final class org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator<T> implements java.util.Iterator<org.eclipse.collections.api.tuple.Pair<T, java.lang.Integer>>
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator
  super_class: java.lang.Object
{
  private final java.util.Iterator<T> iterator;
    descriptor: Ljava/util/Iterator;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Iterator<TT;>;

  private int index;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  public void <init>(java.lang.Iterable<T>);
    descriptor: (Ljava/lang/Iterable;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator this
        start local 1 // java.lang.Iterable iterable
         0: .line 24
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 22
            aload 0 /* this */
            iconst_0
            putfield org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator.index:I
         2: .line 26
            aload 0 /* this */
            aload 1 /* iterable */
            invokeinterface java.lang.Iterable.iterator:()Ljava/util/Iterator;
            putfield org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator.iterator:Ljava/util/Iterator;
         3: .line 27
            return
        end local 1 // java.lang.Iterable iterable
        end local 0 // org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0      this  Lorg/eclipse/collections/impl/lazy/iterator/ZipWithIndexIterator<TT;>;
            0    4     1  iterable  Ljava/lang/Iterable<TT;>;
    Signature: (Ljava/lang/Iterable<TT;>;)V
    MethodParameters:
          Name  Flags
      iterable  

  public void remove();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator this
         0: .line 32
            new java.lang.UnsupportedOperationException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Cannot call remove() on "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            invokevirtual java.lang.Class.getSimpleName:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/lazy/iterator/ZipWithIndexIterator<TT;>;

  public boolean hasNext();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator this
         0: .line 38
            aload 0 /* this */
            getfield org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator.iterator:Ljava/util/Iterator;
            invokeinterface java.util.Iterator.hasNext:()Z
            ireturn
        end local 0 // org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/lazy/iterator/ZipWithIndexIterator<TT;>;

  public org.eclipse.collections.api.tuple.Pair<T, java.lang.Integer> next();
    descriptor: ()Lorg/eclipse/collections/api/tuple/Pair;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=1
        start local 0 // org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator this
         0: .line 46
            aload 0 /* this */
            getfield org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator.iterator:Ljava/util/Iterator;
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            aload 0 /* this */
            getfield org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator.index:I
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            invokestatic org.eclipse.collections.impl.tuple.Tuples.pair:(Ljava/lang/Object;Ljava/lang/Object;)Lorg/eclipse/collections/api/tuple/Pair;
            astore 2
         1: .line 50
            aload 0 /* this */
            dup
            getfield org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator.index:I
            iconst_1
            iadd
            putfield org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator.index:I
         2: .line 46
            aload 2
            areturn
         3: .line 49
      StackMap locals:
      StackMap stack: java.lang.Throwable
            astore 1
         4: .line 50
            aload 0 /* this */
            dup
            getfield org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator.index:I
            iconst_1
            iadd
            putfield org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator.index:I
         5: .line 51
            aload 1
            athrow
        end local 0 // org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/eclipse/collections/impl/lazy/iterator/ZipWithIndexIterator<TT;>;
      Exception table:
        from    to  target  type
           0     1       3  any
    Signature: ()Lorg/eclipse/collections/api/tuple/Pair<TT;Ljava/lang/Integer;>;

  public java.lang.Object next();
    descriptor: ()Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual org.eclipse.collections.impl.lazy.iterator.ZipWithIndexIterator.next:()Lorg/eclipse/collections/api/tuple/Pair;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;Ljava/util/Iterator<Lorg/eclipse/collections/api/tuple/Pair<TT;Ljava/lang/Integer;>;>;
SourceFile: "ZipWithIndexIterator.java"