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Class LineNumberTable  view LineNumberTable download

  extended byorg.apache.bcel.classfile.Attribute
      extended byorg.apache.bcel.classfile.LineNumberTable
All Implemented Interfaces:
java.lang.Cloneable, Node,

public final class LineNumberTable
extends Attribute

This class represents a table of line numbers for debugging purposes. This attribute is used by the Code attribute. It contains pairs of PCs and line numbers.

$Id: 386056 2006-03-15 11:31:56Z tcurdt $

Field Summary
private  LineNumber[] line_number_table
private  int line_number_table_length
Fields inherited from class org.apache.bcel.classfile.Attribute
constant_pool, length, name_index, tag
Constructor Summary
(package private) LineNumberTable(int name_index, int length, file, ConstantPool constant_pool)
          Construct object from file stream.
  LineNumberTable(int name_index, int length, LineNumber[] line_number_table, ConstantPool constant_pool)
  LineNumberTable(LineNumberTable c)
Method Summary
 void accept(Visitor v)
          Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class.
 Attribute copy(ConstantPool _constant_pool)
 void dump( file)
          Dump line number table attribute to file stream in binary format.
 LineNumber[] getLineNumberTable()
 int getSourceLine(int pos)
          Map byte code positions to source code lines.
 int getTableLength()
 void setLineNumberTable(LineNumber[] line_number_table)
 java.lang.String toString()
          Convert this Object to a human-readable String.
Methods inherited from class org.apache.bcel.classfile.Attribute
addAttributeReader, clone, getConstantPool, getLength, getNameIndex, getTag, readAttribute, removeAttributeReader, setConstantPool, setLength, setNameIndex
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail


private int line_number_table_length


private LineNumber[] line_number_table
Constructor Detail


public LineNumberTable(LineNumberTable c)


public LineNumberTable(int name_index,
                       int length,
                       LineNumber[] line_number_table,
                       ConstantPool constant_pool)


LineNumberTable(int name_index,
                int length,
                ConstantPool constant_pool)
Construct object from file stream.

Method Detail


public void accept(Visitor v)
Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.

Specified by:
accept in interface Node
Specified by:
accept in class Attribute


public final void dump( file)
Dump line number table attribute to file stream in binary format.

dump in class Attribute


public final LineNumber[] getLineNumberTable()


public final void setLineNumberTable(LineNumber[] line_number_table)


public final java.lang.String toString()
Description copied from class: java.lang.Object
Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

toString in class Attribute


public int getSourceLine(int pos)
Map byte code positions to source code lines.


public Attribute copy(ConstantPool _constant_pool)
Specified by:
copy in class Attribute


public final int getTableLength()