jdk7u.jaxp.org.apache.bcel.external.classfile

Class ClassParser

java.lang.Object

jdk7u.jaxp.org.apache.bcel.external.classfile.ClassParser

public final class ClassParser
extends Object

Wrapper class that parses a given Java .class file. The method parse returns a JavaClass object on success. When an I/O error or an inconsistency occurs an appropiate exception is propagated back to the caller. The structure and the names comply, except for a few conveniences, exactly with the JVM specification 1.0. See this paper for further details about the structure of a bytecode file.

Author:

M. Dahm

Constructor Summary

Constructors

Constructor and Description
ClassParser(InputStream file, String file_name) Parse class from the given stream.
ClassParser(String file_name) Parse class from given .class file.
ClassParser(String zip_file, String file_name) Parse class from given .class file in a ZIP-archive

Method Summary

Methods

Modifier and Type	Method and Description
JavaClass	parse() Parse the given Java class file and return an object that represents the contained data, i.e., constants, methods, fields and commands.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassParser

public ClassParser(InputStream file,
           String file_name)

Parse class from the given stream.

Parameters:

file - Input stream

file_name - File name

ClassParser

public ClassParser(String file_name)
            throws IOException

Parse class from given .class file.

Parameters:

file_name - file name

Throws:

IOException

ClassParser

public ClassParser(String zip_file,
           String file_name)
            throws IOException

Parse class from given .class file in a ZIP-archive

Parameters:

file_name - file name

Throws:

IOException

Method Detail

parse

public JavaClass parse()
                throws IOException,
                       ClassFormatException

Parse the given Java class file and return an object that represents the contained data, i.e., constants, methods, fields and commands. A ClassFormatException is raised, if the file is not a valid .class file. (This does not include verification of the byte code as it is performed by the java interpreter).

Returns:

Class object representing the parsed class file

Throws:

IOException

ClassFormatException