# Class LineNumber

java.lang.Object
org.apache.bcel.classfile.LineNumber

All Implemented Interfaces:
  `Cloneable, Node`

public final class LineNumber extends Object implements Cloneable, Node
This class represents a (PC offset, line number) pair, i.e., a line number in the source that corresponds to a relative address in the byte code. This is used for debugging purposes.

See Also:
  - `LineNumberTable`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `LineNumber(int startPc, int lineNumber)`
  `LineNumber(LineNumber c)`
  Initialize from another object.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `accept(Visitor v)`
  Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class.
  `LineNumber`
  `copy()`
  `void`
  `dump(DataOutputStream file)`
  Dump line number/pc pair to file stream in binary format.
  `int`
  `getLineNumber()`
  `int`
  `getStartPC()`
  `void`
  `setLineNumber(int lineNumber)`
  `void`
  `setStartPC(int startPc)`
  `String`
  `toString()`

  ### Methods inherited from class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- ## Constructor Details

  - ### LineNumber

    public LineNumber(int startPc, int lineNumber)
    Parameters:
      `startPc` - Program Counter (PC) corresponds to
      `lineNumber` - line number in source file

  - ### LineNumber

    public LineNumber(LineNumber c)
    Initialize from another object.
    Parameters:
      `c` - the object to copy

- ## Method Details

  - ### accept

    public void accept(Visitor v)
    Called by objects that are traversing the nodes of the tree implicitly 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`
    Parameters:
      `v` - Visitor object

  - ### copy

    public LineNumber copy()
    Returns:
      deep copy of this object

  - ### dump

    public void dump(DataOutputStream file) throws IOException
    Dump line number/pc pair to file stream in binary format.
    Parameters:
      `file` - Output file stream
    Throws:
      `IOException` - if an I/O Exception occurs in writeShort

  - ### getLineNumber

    public int getLineNumber()
    Returns:
      Corresponding source line

  - ### getStartPC

    public int getStartPC()
    Returns:
      PC in code

  - ### setLineNumber

    public void setLineNumber(int lineNumber)
    Parameters:
      `lineNumber` - the source line number

  - ### setStartPC

    public void setStartPC(int startPc)
    Parameters:
      `startPc` - the pc for this line number

  - ### toString

    public String toString()
    Overrides:
      `toString` in class `Object`
    Returns:
      String representation