Package com.sun.jdo.api.persistence.enhancer.classfile

Class ClassFile

java.lang.Object

com.sun.jdo.api.persistence.enhancer.classfile.ClassFile

All Implemented Interfaces:

VMConstants

public final class ClassFile
extends Object
implements VMConstants

ClassFile models the structure of a class as represented within a class file.

Field Summary

Fields

Modifier and Type	Field	Description
static final short[][]	jdkMajorMinorVersions
static final List	jdkVersions
static final int	magic
static final String	supportedVersions

Fields inherited from interface com.sun.jdo.api.persistence.enhancer.classfile.VMConstants

ACCAbstract, ACCFinal, ACCInterface, ACCNative, ACCPrivate, ACCProtected, ACCPublic, ACCStatic, ACCSuper, ACCSynchronized, ACCTransient, ACCVolatile, CONSTANTClass, CONSTANTDouble, CONSTANTFieldRef, CONSTANTFloat, CONSTANTInteger, CONSTANTInterfaceMethodRef, CONSTANTLong, CONSTANTMethodRef, CONSTANTNameAndType, CONSTANTString, CONSTANTUnicode, CONSTANTUtf8, opc_aaload, opc_aastore, opc_aconst_null, opc_aload, opc_aload_0, opc_aload_1, opc_aload_2, opc_aload_3, opc_anewarray, opc_areturn, opc_arraylength, opc_astore, opc_astore_0, opc_astore_1, opc_astore_2, opc_astore_3, opc_athrow, opc_baload, opc_bastore, opc_bipush, opc_caload, opc_castore, opc_checkcast, opc_d2f, opc_d2i, opc_d2l, opc_dadd, opc_daload, opc_dastore, opc_dcmpg, opc_dcmpl, opc_dconst_0, opc_dconst_1, opc_ddiv, opc_dload, opc_dload_0, opc_dload_1, opc_dload_2, opc_dload_3, opc_dmul, opc_dneg, opc_drem, opc_dreturn, opc_dstore, opc_dstore_0, opc_dstore_1, opc_dstore_2, opc_dstore_3, opc_dsub, opc_dup, opc_dup_x1, opc_dup_x2, opc_dup2, opc_dup2_x1, opc_dup2_x2, opc_f2d, opc_f2i, opc_f2l, opc_fadd, opc_faload, opc_fastore, opc_fcmpg, opc_fcmpl, opc_fconst_0, opc_fconst_1, opc_fconst_2, opc_fdiv, opc_fload, opc_fload_0, opc_fload_1, opc_fload_2, opc_fload_3, opc_fmul, opc_fneg, opc_frem, opc_freturn, opc_fstore, opc_fstore_0, opc_fstore_1, opc_fstore_2, opc_fstore_3, opc_fsub, opc_getfield, opc_getstatic, opc_goto, opc_goto_w, opc_i2b, opc_i2c, opc_i2d, opc_i2f, opc_i2l, opc_i2s, opc_iadd, opc_iaload, opc_iand, opc_iastore, opc_iconst_0, opc_iconst_1, opc_iconst_2, opc_iconst_3, opc_iconst_4, opc_iconst_5, opc_iconst_m1, opc_idiv, opc_if_acmpeq, opc_if_acmpne, opc_if_icmpeq, opc_if_icmpge, opc_if_icmpgt, opc_if_icmple, opc_if_icmplt, opc_if_icmpne, opc_ifeq, opc_ifge, opc_ifgt, opc_ifle, opc_iflt, opc_ifne, opc_ifnonnull, opc_ifnull, opc_iinc, opc_iload, opc_iload_0, opc_iload_1, opc_iload_2, opc_iload_3, opc_imul, opc_ineg, opc_instanceof, opc_invokeinterface, opc_invokespecial, opc_invokestatic, opc_invokevirtual, opc_ior, opc_irem, opc_ireturn, opc_ishl, opc_ishr, opc_istore, opc_istore_0, opc_istore_1, opc_istore_2, opc_istore_3, opc_isub, opc_iushr, opc_ixor, opc_jsr, opc_jsr_w, opc_l2d, opc_l2f, opc_l2i, opc_ladd, opc_laload, opc_land, opc_lastore, opc_lcmp, opc_lconst_0, opc_lconst_1, opc_ldc, opc_ldc_w, opc_ldc2_w, opc_ldiv, opc_lload, opc_lload_0, opc_lload_1, opc_lload_2, opc_lload_3, opc_lmul, opc_lneg, opc_lookupswitch, opc_lor, opc_lrem, opc_lreturn, opc_lshl, opc_lshr, opc_lstore, opc_lstore_0, opc_lstore_1, opc_lstore_2, opc_lstore_3, opc_lsub, opc_lushr, opc_lxor, opc_monitorenter, opc_monitorexit, opc_multianewarray, opc_new, opc_newarray, opc_nop, opc_pop, opc_pop2, opc_putfield, opc_putstatic, opc_ret, opc_return, opc_saload, opc_sastore, opc_sipush, opc_swap, opc_tableswitch, opc_wide, opc_xxxunusedxxx, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, T_TWOWORD, T_UNKNOWN, T_WORD, TC_INTERFACE, TC_OBJECT, TC_STRING

Constructor Summary

Constructors

Constructor	Description
ClassFile(DataInputStream data)	Construct a ClassFile from an input stream
ClassFile(String cname, String supername)	Construct a bare bones class, ready for additions

Method Summary

Modifier and Type	Method	Description
int	access()	Return the access flags for the class - see VMConstants
void	addField(ClassField field)	Add a field to the list of the fields which the class contains
void	addField(ClassField field, int index)	Add a field to the list of the fields which the class contains, at the index'th position.
void	addInterface(ConstClass iface)	Add an interface to the list of the interfaces which the class implements
void	addMethod(ClassMethod method)	Add a method to the list of the methods which the class defines
AttributeVector	attributes()	Return the list of the attributes associated with the class
ConstClass	className()	Return the name of the class
Vector	fields()	Return the list of the fields which the class contains The contents are ClassField objects
ClassField	findField(String fieldName)	Look for a field with the specified name
ClassMethod	findMethod(String methodName, String methodSig)	Look for a method with the specified name and type signature
byte[]	getBytes()	Returns a byte array representation of this class.
Vector	interfaces()	Return the list of the interfaces which the class implements The contents are ConstClass objects
final boolean	isAbstract()	Is the class abstract?
final boolean	isFinal()	Is the class final?
final boolean	isInterface()	Is the class an interface?
final boolean	isPublic()	Is the class public?
Vector	methods()	Return the list of the methods which the class defines The contents are ClassMethod objects
ConstantPool	pool()	Return the constant pool for the class file
void	print(PrintStream out)
static final String	printSupportedVersions()
void	setAccessFlags(int flags)	Set the access flags for the class - see VMConstants
void	setSuperName(ConstClass superCl)	Set the name of the super class
void	summarize()
ConstClass	superName()	Return the name of the super class
String	superNameString()	Return the name of the super class as a string
void	write(DataOutputStream buff)	Write the Class file to the data output stream

Methods inherited from class java.lang.Object

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

Field Details

magic

public static final int magic

See Also:

• Constant Field Values

jdkMajorMinorVersions

public static final short[][] jdkMajorMinorVersions

jdkVersions

public static final List jdkVersions

supportedVersions

public static final String supportedVersions

Constructor Details

ClassFile

public ClassFile(DataInputStream data)
          throws ClassFormatError

Construct a ClassFile from an input stream

Throws:

ClassFormatError

ClassFile

public ClassFile(String cname,
 String supername)

Construct a bare bones class, ready for additions

Method Details

pool

public ConstantPool pool()

Return the constant pool for the class file

access

public int access()

Return the access flags for the class - see VMConstants

isFinal

public final boolean isFinal()

Is the class final?

isInterface

public final boolean isInterface()

Is the class an interface?

isPublic

public final boolean isPublic()

Is the class public?

isAbstract

public final boolean isAbstract()

Is the class abstract?

setAccessFlags

public void setAccessFlags(int flags)

Set the access flags for the class - see VMConstants

className

public ConstClass className()

Return the name of the class

superName

public ConstClass superName()

Return the name of the super class

superNameString

public String superNameString()

Return the name of the super class as a string

setSuperName

public void setSuperName(ConstClass superCl)

Set the name of the super class

interfaces

public Vector interfaces()

Return the list of the interfaces which the class implements The contents are ConstClass objects

addInterface

public void addInterface(ConstClass iface)

Add an interface to the list of the interfaces which the class implements

fields

public Vector fields()

Return the list of the fields which the class contains The contents are ClassField objects

addField

public void addField(ClassField field)

Add a field to the list of the fields which the class contains

addField

public void addField(ClassField field,
 int index)

Add a field to the list of the fields which the class contains, at the index'th position.

methods

public Vector methods()

Return the list of the methods which the class defines The contents are ClassMethod objects

findMethod

public ClassMethod findMethod(String methodName,
 String methodSig)

Look for a method with the specified name and type signature

addMethod

public void addMethod(ClassMethod method)

Add a method to the list of the methods which the class defines

findField

public ClassField findField(String fieldName)

Look for a field with the specified name

attributes

public AttributeVector attributes()

Return the list of the attributes associated with the class

write

public void write(DataOutputStream buff)
           throws IOException

Write the Class file to the data output stream

Throws:

IOException

getBytes

public byte[] getBytes()
                throws IOException

Returns a byte array representation of this class.

Throws:

IOException

print

public void print(PrintStream out)

summarize

public void summarize()

printSupportedVersions

public static final String printSupportedVersions()