Package org.apache.bcel.classfile

Class ExceptionTable

java.lang.Object

org.apache.bcel.classfile.Attribute

org.apache.bcel.classfile.ExceptionTable

All Implemented Interfaces:

Cloneable, Node

public final class ExceptionTable
extends Attribute

This class represents the table of exceptions that are thrown by a method. This attribute may be used once per method. The name of this class is ExceptionTable for historical reasons; The Java Virtual Machine Specification, Second Edition defines this attribute using the name Exceptions (which is inconsistent with the other classes).

 Exceptions_attribute {
   u2 attribute_name_index;
   u4 attribute_length;
   u2 number_of_exceptions;
   u2 exception_index_table[number_of_exceptions];
 }
 

See Also:

• Code

Field Summary

Fields inherited from class org.apache.bcel.classfile.Attribute

constant_pool, EMPTY_ARRAY, length, name_index, tag

Constructor Summary

Constructors

Constructor	Description
ExceptionTable(int nameIndex, int length, int[] exceptionIndexTable, ConstantPool constantPool)
ExceptionTable(ExceptionTable 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.
Attribute	copy(ConstantPool constantPool)
void	dump(DataOutputStream file)	Dump exceptions attribute to file stream in binary format.
int[]	getExceptionIndexTable()
String[]	getExceptionNames()
int	getNumberOfExceptions()
void	setExceptionIndexTable(int[] exceptionIndexTable)
String	toString()

Methods inherited from class org.apache.bcel.classfile.Attribute

addAttributeReader, addAttributeReader, clone, getConstantPool, getLength, getName, getNameIndex, getTag, println, readAttribute, readAttribute, removeAttributeReader, setConstantPool, setLength, setNameIndex

Methods inherited from class java.lang.Object

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

Constructor Details

ExceptionTable

public ExceptionTable(ExceptionTable c)

Initialize from another object. Note that both objects use the same references (shallow copy). Use copy() for a physical copy.

Parameters:

c - Source to copy.

ExceptionTable

public ExceptionTable(int nameIndex,
 int length,
 int[] exceptionIndexTable,
 ConstantPool constantPool)

Parameters:

nameIndex - Index in constant pool

length - Content length in bytes

exceptionIndexTable - Table of indices in constant pool

constantPool - Array of constants

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

Specified by:

accept in class Attribute

Parameters:

v - Visitor object

copy

public Attribute copy(ConstantPool constantPool)

Specified by:

copy in class Attribute

Parameters:

constantPool - constant pool to save.

Returns:

deep copy of this attribute

dump

public void dump(DataOutputStream file)
          throws IOException

Dump exceptions attribute to file stream in binary format.

Overrides:

dump in class Attribute

Parameters:

file - Output file stream

Throws:

IOException - if an I/O error occurs.

getExceptionIndexTable

public int[] getExceptionIndexTable()

Returns:

Array of indices into constant pool of thrown exceptions.

getExceptionNames

public String[] getExceptionNames()

Returns:

class names of thrown exceptions

getNumberOfExceptions

public int getNumberOfExceptions()

Returns:

Length of exception table.

setExceptionIndexTable

public void setExceptionIndexTable(int[] exceptionIndexTable)

Parameters:

exceptionIndexTable - the list of exception indexes Also redefines number_of_exceptions according to table length.

toString

public String toString()

Overrides:

toString in class Attribute

Returns:

String representation, i.e., a list of thrown exceptions.