http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
public class org.apache.fop.layoutmgr.PositionIterator implements java.util.Iterator<org.apache.fop.layoutmgr.Position>
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.fop.layoutmgr.PositionIterator
  super_class: java.lang.Object
{
  private java.util.Iterator parentIter;
    descriptor: Ljava/util/Iterator;
    flags: (0x0002) ACC_PRIVATE

  private java.lang.Object nextObj;
    descriptor: Ljava/lang/Object;
    flags: (0x0002) ACC_PRIVATE

  private org.apache.fop.layoutmgr.LayoutManager childLM;
    descriptor: Lorg/apache/fop/layoutmgr/LayoutManager;
    flags: (0x0002) ACC_PRIVATE

  private boolean hasNext;
    descriptor: Z
    flags: (0x0002) ACC_PRIVATE

  public void <init>(java.util.Iterator);
    descriptor: (Ljava/util/Iterator;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
        start local 1 // java.util.Iterator parentIter
         0: .line 46
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 47
            aload 0 /* this */
            aload 1 /* parentIter */
            putfield org.apache.fop.layoutmgr.PositionIterator.parentIter:Ljava/util/Iterator;
         2: .line 48
            aload 0 /* this */
            invokevirtual org.apache.fop.layoutmgr.PositionIterator.lookAhead:()V
         3: .line 50
            return
        end local 1 // java.util.Iterator parentIter
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    4     0        this  Lorg/apache/fop/layoutmgr/PositionIterator;
            0    4     1  parentIter  Ljava/util/Iterator;
    MethodParameters:
            Name  Flags
      parentIter  

  public org.apache.fop.layoutmgr.LayoutManager getNextChildLM();
    descriptor: ()Lorg/apache/fop/layoutmgr/LayoutManager;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
         0: .line 55
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.childLM:Lorg/apache/fop/layoutmgr/LayoutManager;
            ifnonnull 3
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.nextObj:Ljava/lang/Object;
            ifnull 3
         1: .line 56
            aload 0 /* this */
            aload 0 /* this */
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.nextObj:Ljava/lang/Object;
            invokevirtual org.apache.fop.layoutmgr.PositionIterator.getLM:(Ljava/lang/Object;)Lorg/apache/fop/layoutmgr/LayoutManager;
            putfield org.apache.fop.layoutmgr.PositionIterator.childLM:Lorg/apache/fop/layoutmgr/LayoutManager;
         2: .line 57
            aload 0 /* this */
            iconst_1
            putfield org.apache.fop.layoutmgr.PositionIterator.hasNext:Z
         3: .line 59
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.childLM:Lorg/apache/fop/layoutmgr/LayoutManager;
            areturn
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/apache/fop/layoutmgr/PositionIterator;

  protected org.apache.fop.layoutmgr.LayoutManager getLM(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Lorg/apache/fop/layoutmgr/LayoutManager;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
        start local 1 // java.lang.Object nextObj
         0: .line 67
            aload 0 /* this */
            aload 1 /* nextObj */
            invokevirtual org.apache.fop.layoutmgr.PositionIterator.getPos:(Ljava/lang/Object;)Lorg/apache/fop/layoutmgr/Position;
            invokevirtual org.apache.fop.layoutmgr.Position.getLM:()Lorg/apache/fop/layoutmgr/LayoutManager;
            areturn
        end local 1 // java.lang.Object nextObj
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lorg/apache/fop/layoutmgr/PositionIterator;
            0    1     1  nextObj  Ljava/lang/Object;
    MethodParameters:
         Name  Flags
      nextObj  

  protected org.apache.fop.layoutmgr.Position getPos(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Lorg/apache/fop/layoutmgr/Position;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
        start local 1 // java.lang.Object nextObj
         0: .line 79
            aload 1 /* nextObj */
            instanceof org.apache.fop.layoutmgr.Position
            ifeq 2
         1: .line 80
            aload 1 /* nextObj */
            checkcast org.apache.fop.layoutmgr.Position
            areturn
         2: .line 82
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
         3: .line 83
            ldc "Cannot obtain Position from the given object."
         4: .line 82
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        end local 1 // java.lang.Object nextObj
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    5     0     this  Lorg/apache/fop/layoutmgr/PositionIterator;
            0    5     1  nextObj  Ljava/lang/Object;
    MethodParameters:
         Name  Flags
      nextObj  

  private void lookAhead();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
         0: .line 87
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.parentIter:Ljava/util/Iterator;
            invokeinterface java.util.Iterator.hasNext:()Z
            ifeq 4
         1: .line 88
            aload 0 /* this */
            iconst_1
            putfield org.apache.fop.layoutmgr.PositionIterator.hasNext:Z
         2: .line 89
            aload 0 /* this */
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.parentIter:Ljava/util/Iterator;
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            putfield org.apache.fop.layoutmgr.PositionIterator.nextObj:Ljava/lang/Object;
         3: .line 90
            goto 5
         4: .line 91
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            invokevirtual org.apache.fop.layoutmgr.PositionIterator.endIter:()V
         5: .line 93
      StackMap locals:
      StackMap stack:
            return
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/apache/fop/layoutmgr/PositionIterator;

  protected boolean checkNext();
    descriptor: ()Z
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
         0: .line 97
            aload 0 /* this */
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.nextObj:Ljava/lang/Object;
            invokevirtual org.apache.fop.layoutmgr.PositionIterator.getLM:(Ljava/lang/Object;)Lorg/apache/fop/layoutmgr/LayoutManager;
            astore 1 /* lm */
        start local 1 // org.apache.fop.layoutmgr.LayoutManager lm
         1: .line 98
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.childLM:Lorg/apache/fop/layoutmgr/LayoutManager;
            ifnonnull 4
         2: .line 99
            aload 0 /* this */
            aload 1 /* lm */
            putfield org.apache.fop.layoutmgr.PositionIterator.childLM:Lorg/apache/fop/layoutmgr/LayoutManager;
         3: .line 100
            goto 8
      StackMap locals: org.apache.fop.layoutmgr.LayoutManager
      StackMap stack:
         4: aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.childLM:Lorg/apache/fop/layoutmgr/LayoutManager;
            aload 1 /* lm */
            if_acmpeq 8
            aload 1 /* lm */
            ifnull 8
         5: .line 102
            aload 0 /* this */
            iconst_0
            putfield org.apache.fop.layoutmgr.PositionIterator.hasNext:Z
         6: .line 103
            aload 0 /* this */
            aconst_null
            putfield org.apache.fop.layoutmgr.PositionIterator.childLM:Lorg/apache/fop/layoutmgr/LayoutManager;
         7: .line 104
            iconst_0
            ireturn
         8: .line 106
      StackMap locals:
      StackMap stack:
            iconst_1
            ireturn
        end local 1 // org.apache.fop.layoutmgr.LayoutManager lm
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    9     0  this  Lorg/apache/fop/layoutmgr/PositionIterator;
            1    9     1    lm  Lorg/apache/fop/layoutmgr/LayoutManager;

  protected void endIter();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
         0: .line 111
            aload 0 /* this */
            iconst_0
            putfield org.apache.fop.layoutmgr.PositionIterator.hasNext:Z
         1: .line 112
            aload 0 /* this */
            aconst_null
            putfield org.apache.fop.layoutmgr.PositionIterator.nextObj:Ljava/lang/Object;
         2: .line 113
            aload 0 /* this */
            aconst_null
            putfield org.apache.fop.layoutmgr.PositionIterator.childLM:Lorg/apache/fop/layoutmgr/LayoutManager;
         3: .line 114
            return
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/apache/fop/layoutmgr/PositionIterator;

  public boolean hasNext();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
         0: .line 118
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.hasNext:Z
            ifeq 1
            aload 0 /* this */
            invokevirtual org.apache.fop.layoutmgr.PositionIterator.checkNext:()Z
            ifeq 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/fop/layoutmgr/PositionIterator;

  public org.apache.fop.layoutmgr.Position next();
    descriptor: ()Lorg/apache/fop/layoutmgr/Position;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
         0: .line 124
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.hasNext:Z
            ifeq 4
         1: .line 125
            aload 0 /* this */
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.nextObj:Ljava/lang/Object;
            invokevirtual org.apache.fop.layoutmgr.PositionIterator.getPos:(Ljava/lang/Object;)Lorg/apache/fop/layoutmgr/Position;
            astore 1 /* retPos */
        start local 1 // org.apache.fop.layoutmgr.Position retPos
         2: .line 126
            aload 0 /* this */
            invokevirtual org.apache.fop.layoutmgr.PositionIterator.lookAhead:()V
         3: .line 127
            aload 1 /* retPos */
            areturn
        end local 1 // org.apache.fop.layoutmgr.Position retPos
         4: .line 129
      StackMap locals:
      StackMap stack:
            new java.util.NoSuchElementException
            dup
            ldc "PosIter"
            invokespecial java.util.NoSuchElementException.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    5     0    this  Lorg/apache/fop/layoutmgr/PositionIterator;
            2    4     1  retPos  Lorg/apache/fop/layoutmgr/Position;
    Exceptions:
      throws java.util.NoSuchElementException

  public java.lang.Object peekNext();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
         0: .line 135
            aload 0 /* this */
            getfield org.apache.fop.layoutmgr.PositionIterator.nextObj:Ljava/lang/Object;
            areturn
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/layoutmgr/PositionIterator;

  public void remove();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.fop.layoutmgr.PositionIterator this
         0: .line 140
            new java.lang.UnsupportedOperationException
            dup
            ldc "PositionIterator doesn't support remove"
            invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // org.apache.fop.layoutmgr.PositionIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/layoutmgr/PositionIterator;
    Exceptions:
      throws java.lang.UnsupportedOperationException

  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.apache.fop.layoutmgr.PositionIterator.next:()Lorg/apache/fop/layoutmgr/Position;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Ljava/util/Iterator<Lorg/apache/fop/layoutmgr/Position;>;
SourceFile: "PositionIterator.java"