ClassFile (janino 3.0.12 API)

java.lang.Object
- org.codehaus.janino.util.ClassFile

All Implemented Interfaces:

Annotatable
```
public class ClassFile
extends Object
implements Annotatable
```
An object that implements the Java "class file" format.
ClassFile(InputStream) reads bytecode from an InputStream and creates a ClassFile object from it.

store(OutputStream) generates JVM bytecode which is suitable for being processed by a Java virtual machine, and writes it to an OutputStream.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`ClassFile.Annotation` The structure of the `annotations` array as described in JVMS8 4.7.16.
`static class`	`ClassFile.AnnotationDefaultAttribute` Representation of an `AnnotationDefault` attribute (see JVMS8 4.7.22).
`static class`	`ClassFile.AnnotationsAttribute` Representation of a `Runtime[In]visibleAnnotations` attribute (see JVMS8 4.7.16/17).
`static class`	`ClassFile.ArrayElementValue` Representation of the "array_value" structure.
`static class`	`ClassFile.AttributeInfo` Representation of a class file attribute (see JVMS7 4.7).
`static class`	`ClassFile.BooleanElementValue`
`static class`	`ClassFile.ByteElementValue`
`static class`	`ClassFile.CharElementValue`
`static class`	`ClassFile.ClassElementValue`
`static class`	`ClassFile.ClassFileException` Unchecked exception that represents an error condition that could occur during processing of class files, e.g.
`static class`	`ClassFile.CodeAttribute` Representation of an unmodifiable `Code` attribute, as read from a class file.
`static class`	`ClassFile.ConstantClassInfo` See JVMS7 4.4.1.
`static class`	`ClassFile.ConstantElementValue` Convenience class for element values that are constants (as opposed to annotations, enum constants and arrays).
`static class`	`ClassFile.ConstantFieldrefInfo` See JVMS7 4.4.2.
`static class`	`ClassFile.ConstantInterfaceMethodrefInfo` See JVMS7 4.4.2.
`static class`	`ClassFile.ConstantInvokeDynamicInfo` See JVMS7 4.4.10.
`static class`	`ClassFile.ConstantMethodHandleInfo` See JVMS7 4.4.8.
`static class`	`ClassFile.ConstantMethodrefInfo` See JVMS7 4.4.2.
`static class`	`ClassFile.ConstantMethodTypeInfo` See JVMS7 4.4.9.
`static class`	`ClassFile.ConstantNameAndTypeInfo` See JVMS7 4.4.6.
`static class`	`ClassFile.ConstantPoolInfo` Base for various the constant pool table entry types.
`static class`	`ClassFile.ConstantUtf8Info` See JVMS7 4.4.7.
`static class`	`ClassFile.ConstantValueAttribute` Representation of a `ConstantValue` attribute (see JVMS 4.7.2).
`static class`	`ClassFile.ConstantValuePoolInfo` Intermediate base class for constant pool table entry types that have 'value' semantics: Double, Float, Integer, Long, String
`static class`	`ClassFile.DeprecatedAttribute` Representation of a `Deprecated` attribute (see JVMS 4.7.10).
`static class`	`ClassFile.DoubleElementValue`
`static interface`	`ClassFile.ElementValue` Representation of the "element_value" structure (see JVMS8 4.7.16.1).
`static class`	`ClassFile.EnumConstValue` Representation of the "enum_const_value" element in the "element_value" structure.
`static class`	`ClassFile.ExceptionsAttribute` Representation of an `Exceptions` attribute (see JVMS 4.7.4).
`class`	`ClassFile.FieldInfo` Representation of a "method_info" structure, as defined by JVMS7 4.5.
`static class`	`ClassFile.FloatElementValue`
`static class`	`ClassFile.InnerClassesAttribute` Representation of an `InnerClasses` attribute (see JVMS 4.7.5).
`static class`	`ClassFile.IntElementValue`
`static class`	`ClassFile.LineNumberTableAttribute` Representation of a `LineNumberTable` attribute (see JVMS 4.7.8).
`static class`	`ClassFile.LocalVariableTableAttribute` Representation of a `LocalVariableTable` attribute (see JVMS 4.7.9).
`static class`	`ClassFile.LongElementValue`
`class`	`ClassFile.MethodInfo` Representation of a "method_info" structure, as defined by JVMS7 4.6.
`static class`	`ClassFile.ShortElementValue`
`static class`	`ClassFile.SourceFileAttribute` Representation of a `SourceFile` attribute (see JVMS 4.7.7).
`static class`	`ClassFile.StackMapTableAttribute` Representation of an unmodifiable `StackMapTable` attribute, as read from a class file.
`static class`	`ClassFile.StringElementValue`
`static class`	`ClassFile.SyntheticAttribute` Representation of a `Synthetic` attribute (see JVMS 4.7.6).

Field Summary

Fields
Modifier and Type	Field and Description
`short`	`accessFlags` The access flags of the class.
`List<ClassFile.FieldInfo>`	`fieldInfos` The `ClassFile.FieldInfo`s of the field members of this class or interface.
`short[]`	`interfaces` The constant pool indexes of `ClassFile.ConstantClassInfo` which describe the interfaces that this class implements, resp. that this interface extends.
`static short`	`MAJOR_VERSION_JDK_1_1` Major version number of a class file that was generated by a Java 1.1-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_10` Major version number of a class file that was generated by a Java 1.10-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_11` Major version number of a class file that was generated by a Java 1.11-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_12` Major version number of a class file that was generated by a Java 1.12-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_2` Major version number of a class file that was generated by a Java 1.2-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_3` Major version number of a class file that was generated by a Java 1.3-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_4` Major version number of a class file that was generated by a Java 1.4-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_5` Major version number of a class file that was generated by a Java 1.5-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_6` Major version number of a class file that was generated by a Java 1.6-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_7` Major version number of a class file that was generated by a Java 1.7-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_8` Major version number of a class file that was generated by a Java 1.8-compliant compiler.
`static short`	`MAJOR_VERSION_JDK_1_9` Major version number of a class file that was generated by a Java 1.9-compliant compiler.
`List<ClassFile.MethodInfo>`	`methodInfos` The `ClassFile.MethodInfo`s of the methods of this class or interface.
`static short`	`MINOR_VERSION_JDK_1_1` Minor version number of a class file that was generated by a Java 1.1-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_10` Minor version number of a class file that was generated by a Java 1.10-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_11` Minor version number of a class file that was generated by a Java 1.11-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_12` Minor version number of a class file that was generated by a Java 1.12-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_2` Minor version number of a class file that was generated by a Java 1.2-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_3` Minor version number of a class file that was generated by a Java 1.3-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_4` Minor version number of a class file that was generated by a Java 1.4-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_5` Minor version number of a class file that was generated by a Java 1.5-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_6` Minor version number of a class file that was generated by a Java 1.6-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_7` Minor version number of a class file that was generated by a Java 1.7-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_8` Minor version number of a class file that was generated by a Java 1.8-compliant compiler.
`static short`	`MINOR_VERSION_JDK_1_9` Minor version number of a class file that was generated by a Java 1.9-compliant compiler.
`short`	`superclass` The constant pool index of the `ClassFile.ConstantClassInfo` that describes the superclass of this class.
`short`	`thisClass` The constant pool index of the `ClassFile.ConstantClassInfo` that describes this class.

Constructor Summary

Constructors
Constructor and Description
`ClassFile(InputStream inputStream)` Reads "class file" data from the `inputStream` and construct a `ClassFile` object from it.
`ClassFile(short accessFlags, String thisClassFd, String superclassFd, String[] interfaceFds)` Constructs a class with no fields and methods.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addAnnotationsAttributeEntry(boolean runtimeVisible, String fieldDescriptor, Map<Short,ClassFile.ElementValue> elementValuePairs)` Creates a `Runtime[In]visibleAnnotations` attribute on the class (if it does not yet exist) and adds an entry to it.
`short`	`addConstantClassInfo(String typeFd)` Returns the constant index number for a "CONSTANT_Class_info" structure to the class file.
`short`	`addConstantDoubleInfo(double value)` Adds a "CONSTANT_Double_info" structure to the class file.
`short`	`addConstantFieldrefInfo(String classFd, String fieldName, String fieldFd)` Adds a "CONSTANT_Fieldref_info" structure to the class file.
`short`	`addConstantFloatInfo(float value)` Adds a "CONSTANT_Float_info" structure to the class file.
`short`	`addConstantIntegerInfo(int value)` Adds a "CONSTANT_Integer_info" structure to the class file.
`short`	`addConstantInterfaceMethodrefInfo(String classFd, String methodName, String methodMd)` Adds a "CONSTANT_InterfaceMethodref_info" structure to the class file.
`short`	`addConstantLongInfo(long value)` Adds a "CONSTANT_Long_info" structure to the class file.
`short`	`addConstantMethodrefInfo(String classFd, String methodName, String methodMd)` Adds a "CONSTANT_Methodref_info" structure to the class file.
`short`	`addConstantStringInfo(String string)` Adds a "CONSTANT_String_info" structure to the class file.
`short`	`addConstantUtf8Info(String s)` Adds a "CONSTANT_Utf8_info" structure to the class file if no equal entry exists.
`void`	`addDeprecatedAttribute()` Adds the `Deprecated` attribute to this class.
`ClassFile.FieldInfo`	`addFieldInfo(short accessFlags, String fieldName, String fieldTypeFd, Object optionalConstantValue)` Creates a `ClassFile.FieldInfo` and adds it to this class.
`void`	`addInnerClassesAttributeEntry(ClassFile.InnerClassesAttribute.Entry entry)` Creates an `InnerClasses` attribute if it does not exist, then adds the `entry` to the `InnerClasses` attribute.
`ClassFile.MethodInfo`	`addMethodInfo(short accessFlags, String methodName, MethodDescriptor methodMd)` Creates a `ClassFile.MethodInfo` and adds it to this class.
`void`	`addSourceFileAttribute(String sourceFileName)` Adds a `SourceFile` attribute to this class file.
`ClassFile.Annotation[]`	`getAnnotations(boolean runtimeVisible)`
`static String`	`getClassFileResourceName(String className)` Constructs the name of a resource that could contain the class file of the class with the `className`.
`ClassFile.ConstantClassInfo`	`getConstantClassInfo(short index)`
`ClassFile.ConstantFieldrefInfo`	`getConstantFieldrefInfo(short index)`
`ClassFile.ConstantInterfaceMethodrefInfo`	`getConstantInterfaceMethodrefInfo(short index)`
`ClassFile.ConstantInvokeDynamicInfo`	`getConstantInvokeDynamicInfo(short index)`
`ClassFile.ConstantMethodHandleInfo`	`getConstantMethodHandleInfo(short index)`
`ClassFile.ConstantMethodrefInfo`	`getConstantMethodrefInfo(short index)`
`ClassFile.ConstantMethodTypeInfo`	`getConstantMethodTypeInfo(short index)`
`ClassFile.ConstantNameAndTypeInfo`	`getConstantNameAndTypeInfo(short index)`
`ClassFile.ConstantPoolInfo`	`getConstantPoolInfo(short index)`
`int`	`getConstantPoolSize()`
`String`	`getConstantUtf8(short index)` Shorthand for `getConstantUtf8Info(index).s`.
`ClassFile.ConstantUtf8Info`	`getConstantUtf8Info(short index)`
`ClassFile.ConstantValuePoolInfo`	`getConstantValuePoolInfo(short index)`
`ClassFile.InnerClassesAttribute`	`getInnerClassesAttribute()` Finds the `InnerClasses` attribute of this class file.
`short`	`getMajorVersion()`
`short`	`getMinorVersion()`
`static String`	`getSourceResourceName(String className)` Constructs the name of a resource that could contain the source code of the class with the `className`.
`String`	`getThisClassName()`
`void`	`setVersion(short majorVersion, short minorVersion)` Sets the major and minor class file version numbers (JVMS 4.1).
`void`	`store(OutputStream os)` Writes `ClassFile` to an `OutputStream`, in "class file" format.
`byte[]`	`toByteArray()` Returns the byte code of this `ClassFile` as a byte array.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - MAJOR_VERSION_JDK_1_1
```
public static final short MAJOR_VERSION_JDK_1_1
```
    Major version number of a class file that was generated by a Java 1.1-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_1
```
public static final short MINOR_VERSION_JDK_1_1
```
    Minor version number of a class file that was generated by a Java 1.1-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_2
```
public static final short MAJOR_VERSION_JDK_1_2
```
    Major version number of a class file that was generated by a Java 1.2-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_2
```
public static final short MINOR_VERSION_JDK_1_2
```
    Minor version number of a class file that was generated by a Java 1.2-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_3
```
public static final short MAJOR_VERSION_JDK_1_3
```
    Major version number of a class file that was generated by a Java 1.3-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_3
```
public static final short MINOR_VERSION_JDK_1_3
```
    Minor version number of a class file that was generated by a Java 1.3-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_4
```
public static final short MAJOR_VERSION_JDK_1_4
```
    Major version number of a class file that was generated by a Java 1.4-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_4
```
public static final short MINOR_VERSION_JDK_1_4
```
    Minor version number of a class file that was generated by a Java 1.4-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_5
```
public static final short MAJOR_VERSION_JDK_1_5
```
    Major version number of a class file that was generated by a Java 1.5-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_5
```
public static final short MINOR_VERSION_JDK_1_5
```
    Minor version number of a class file that was generated by a Java 1.5-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_6
```
public static final short MAJOR_VERSION_JDK_1_6
```
    Major version number of a class file that was generated by a Java 1.6-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_6
```
public static final short MINOR_VERSION_JDK_1_6
```
    Minor version number of a class file that was generated by a Java 1.6-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_7
```
public static final short MAJOR_VERSION_JDK_1_7
```
    Major version number of a class file that was generated by a Java 1.7-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_7
```
public static final short MINOR_VERSION_JDK_1_7
```
    Minor version number of a class file that was generated by a Java 1.7-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_8
```
public static final short MAJOR_VERSION_JDK_1_8
```
    Major version number of a class file that was generated by a Java 1.8-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_8
```
public static final short MINOR_VERSION_JDK_1_8
```
    Minor version number of a class file that was generated by a Java 1.8-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_9
```
public static final short MAJOR_VERSION_JDK_1_9
```
    Major version number of a class file that was generated by a Java 1.9-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_9
```
public static final short MINOR_VERSION_JDK_1_9
```
    Minor version number of a class file that was generated by a Java 1.9-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_10
```
public static final short MAJOR_VERSION_JDK_1_10
```
    Major version number of a class file that was generated by a Java 1.10-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_10
```
public static final short MINOR_VERSION_JDK_1_10
```
    Minor version number of a class file that was generated by a Java 1.10-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_11
```
public static final short MAJOR_VERSION_JDK_1_11
```
    Major version number of a class file that was generated by a Java 1.11-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_11
```
public static final short MINOR_VERSION_JDK_1_11
```
    Minor version number of a class file that was generated by a Java 1.11-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MAJOR_VERSION_JDK_1_12
```
public static final short MAJOR_VERSION_JDK_1_12
```
    Major version number of a class file that was generated by a Java 1.12-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - MINOR_VERSION_JDK_1_12
```
public static final short MINOR_VERSION_JDK_1_12
```
    Minor version number of a class file that was generated by a Java 1.12-compliant compiler.
    
    See Also:
    
    Constant Field Values
  - accessFlags
```
public final short accessFlags
```
    The access flags of the class.
    
    See Also:
    
    and consorts
  - thisClass
```
public final short thisClass
```
    The constant pool index of the ClassFile.ConstantClassInfo that describes this class.
  - superclass
```
public final short superclass
```
    The constant pool index of the ClassFile.ConstantClassInfo that describes the superclass of this class. Zero for class Object, Object for interfaces.
  - interfaces
```
public final short[] interfaces
```
    The constant pool indexes of ClassFile.ConstantClassInfo which describe the interfaces that this class implements, resp. that this interface extends.
  - fieldInfos
```
public final List<ClassFile.FieldInfo> fieldInfos
```
    The ClassFile.FieldInfos of the field members of this class or interface.
  - methodInfos
```
public final List<ClassFile.MethodInfo> methodInfos
```
    The ClassFile.MethodInfos of the methods of this class or interface.
- Constructor Detail
  - ClassFile
```
public ClassFile(short accessFlags,
                 String thisClassFd,
                 @Nullable
                 String superclassFd,
                 String[] interfaceFds)
```
    Constructs a class with no fields and methods. An application would typically add these through addFieldInfo(short, String, String, Object) and addMethodInfo(short, String, MethodDescriptor) before saving it.
    
    Parameters:
    
    accessFlags - as defined by Mod
    
    thisClassFd - the field descriptor for this class
    
    superclassFd - the field descriptor for the extended class (e.g. "Ljava/lang/Object;")
    
    interfaceFds - the field descriptors for the implemented interfaces
  - ClassFile
```
public ClassFile(InputStream inputStream)
          throws IOException
```
    Reads "class file" data from the inputStream and construct a ClassFile object from it.
    If the ClassFile is created with this constructor, then most modifying operations lead to a UnsupportedOperationException; only fields, methods and attributes can be added.
    
    Throws:
    
    IOException
- Method Detail
  - addSourceFileAttribute
```
public void addSourceFileAttribute(String sourceFileName)
```
    Adds a SourceFile attribute to this class file. (Does not check whether one exists already.)
    
    Parameters:
    
    sourceFileName -
  - addDeprecatedAttribute
```
public void addDeprecatedAttribute()
```
    Adds the Deprecated attribute to this class.
  - getInnerClassesAttribute
```
@Nullable
public ClassFile.InnerClassesAttribute getInnerClassesAttribute()
```
    Finds the InnerClasses attribute of this class file.
    
    Returns:
    
    null if this class has no "InnerClasses" attribute
  - addInnerClassesAttributeEntry
```
public void addInnerClassesAttributeEntry(ClassFile.InnerClassesAttribute.Entry entry)
```
    Creates an InnerClasses attribute if it does not exist, then adds the entry to the InnerClasses attribute.
  - getAnnotations
```
public ClassFile.Annotation[] getAnnotations(boolean runtimeVisible)
```
    Specified by:
    
    getAnnotations in interface Annotatable
    
    Returns:
    
    The annotations on this element; an empty array iff there are no annotations
  - addAnnotationsAttributeEntry
```
public void addAnnotationsAttributeEntry(boolean runtimeVisible,
                                         String fieldDescriptor,
                                         Map<Short,ClassFile.ElementValue> elementValuePairs)
```
    Creates a Runtime[In]visibleAnnotations attribute on the class (if it does not yet exist) and adds an entry to it.
    
    Specified by:
    
    addAnnotationsAttributeEntry in interface Annotatable
    
    Parameters:
    
    elementValuePairs - Maps element-name constant-pool-index (ClassFile.ConstantUtf8Info) to element value
  - getThisClassName
```
public String getThisClassName()
```
    Returns:
    
    The fully qualified name of this class, e.g. "pkg1.pkg2.Outer$Inner"
  - setVersion
```
public void setVersion(short majorVersion,
                       short minorVersion)
```
    Sets the major and minor class file version numbers (JVMS 4.1). The class file version defaults to the JDK 1.1 values (45.3) which execute on virtually every JVM.
  - getMajorVersion
```
public short getMajorVersion()
```
    Returns:
    
    The current major class file version number
  - getMinorVersion
```
public short getMinorVersion()
```
    Returns:
    
    The current minor class file version number
  - addConstantClassInfo
```
public short addConstantClassInfo(String typeFd)
```
    Returns the constant index number for a "CONSTANT_Class_info" structure to the class file. If the class hasn't been added before, adds it to the constant pool. Otherwise returns the constant number for that element of the pool.
    
    See Also:
    
    JVM specification, section 4.4.1
  - addConstantFieldrefInfo
```
public short addConstantFieldrefInfo(String classFd,
                                     String fieldName,
                                     String fieldFd)
```
    Adds a "CONSTANT_Fieldref_info" structure to the class file.
    
    See Also:
    
    JVM specification, section 4.4.2
  - addConstantMethodrefInfo
```
public short addConstantMethodrefInfo(String classFd,
                                      String methodName,
                                      String methodMd)
```
    Adds a "CONSTANT_Methodref_info" structure to the class file.
    
    See Also:
    
    JVM specification, section 4.4.2
  - addConstantInterfaceMethodrefInfo
```
public short addConstantInterfaceMethodrefInfo(String classFd,
                                               String methodName,
                                               String methodMd)
```
    Adds a "CONSTANT_InterfaceMethodref_info" structure to the class file.
    
    See Also:
    
    JVM specification, section 4.4.2
  - addConstantStringInfo
```
public short addConstantStringInfo(String string)
```
    Adds a "CONSTANT_String_info" structure to the class file.
    
    See Also:
    
    JVM specification, section 4.4.3
  - addConstantIntegerInfo
```
public short addConstantIntegerInfo(int value)
```
    Adds a "CONSTANT_Integer_info" structure to the class file.
    
    See Also:
    
    JVM specification, section 4.4.4
  - addConstantFloatInfo
```
public short addConstantFloatInfo(float value)
```
    Adds a "CONSTANT_Float_info" structure to the class file.
    
    See Also:
    
    JVM specification, section 4.4.4
  - addConstantLongInfo
```
public short addConstantLongInfo(long value)
```
    Adds a "CONSTANT_Long_info" structure to the class file.
    
    See Also:
    
    JVM specification, section 4.4.5
  - addConstantDoubleInfo
```
public short addConstantDoubleInfo(double value)
```
    Adds a "CONSTANT_Double_info" structure to the class file.
    
    See Also:
    
    JVM specification, section 4.4.5
  - addConstantUtf8Info
```
public short addConstantUtf8Info(String s)
```
    Adds a "CONSTANT_Utf8_info" structure to the class file if no equal entry exists.
    
    Returns:
    
    The index of the already existing or newly created entry
    
    See Also:
    
    JVM specification, section 4.4.7
  - addFieldInfo
```
public ClassFile.FieldInfo addFieldInfo(short accessFlags,
                                        String fieldName,
                                        String fieldTypeFd,
                                        @Nullable
                                        Object optionalConstantValue)
```
    Creates a ClassFile.FieldInfo and adds it to this class. The return value can be used e.g. to add attributes (Deprecated, ...) to the field.
  - addMethodInfo
```
public ClassFile.MethodInfo addMethodInfo(short accessFlags,
                                          String methodName,
                                          MethodDescriptor methodMd)
```
    Creates a ClassFile.MethodInfo and adds it to this class. The return value can be used e.g. to add attributes (Code, Deprecated, Exceptions, ...) to the method.
  - getConstantPoolInfo
```
public ClassFile.ConstantPoolInfo getConstantPoolInfo(short index)
```
    Returns:
    
    The (read-only) constant pool entry indexed by index
  - getConstantClassInfo
```
public ClassFile.ConstantClassInfo getConstantClassInfo(short index)
```
    Returns:
    
    The (read-only) constant class info indexed by index
  - getConstantFieldrefInfo
```
public ClassFile.ConstantFieldrefInfo getConstantFieldrefInfo(short index)
```
    Returns:
    
    The (read-only) constant fieldref info indexed by index
  - getConstantInterfaceMethodrefInfo
```
public ClassFile.ConstantInterfaceMethodrefInfo getConstantInterfaceMethodrefInfo(short index)
```
    Returns:
    
    The (read-only) constant interface methodref info indexed by index
  - getConstantInvokeDynamicInfo
```
public ClassFile.ConstantInvokeDynamicInfo getConstantInvokeDynamicInfo(short index)
```
    Returns:
    
    The (read-only) constant invoke dynamic info indexed by index
  - getConstantMethodHandleInfo
```
public ClassFile.ConstantMethodHandleInfo getConstantMethodHandleInfo(short index)
```
    Returns:
    
    The (read-only) constant method handle info indexed by index
  - getConstantMethodrefInfo
```
public ClassFile.ConstantMethodrefInfo getConstantMethodrefInfo(short index)
```
    Returns:
    
    The (read-only) constant methodref info indexed by index
  - getConstantMethodTypeInfo
```
public ClassFile.ConstantMethodTypeInfo getConstantMethodTypeInfo(short index)
```
    Returns:
    
    The (read-only) constant method type info indexed by index
  - getConstantNameAndTypeInfo
```
public ClassFile.ConstantNameAndTypeInfo getConstantNameAndTypeInfo(short index)
```
    Returns:
    
    The (read-only) constant name and type info indexed by index
  - getConstantUtf8Info
```
public ClassFile.ConstantUtf8Info getConstantUtf8Info(short index)
```
    Returns:
    
    The (read-only) constant utf8 info indexed by index
  - getConstantValuePoolInfo
```
public ClassFile.ConstantValuePoolInfo getConstantValuePoolInfo(short index)
```
    Returns:
    
    The (read-only) constant value pool info indexed by index
  - getConstantPoolSize
```
public int getConstantPoolSize()
```
    Returns:
    
    The size of the constant pool
  - getConstantUtf8
```
public String getConstantUtf8(short index)
```
    Shorthand for getConstantUtf8Info(index).s.
    
    Parameters:
    
    index - Index to a CONSTANT_Utf8_info in the constant pool
    
    Returns:
    
    The string represented by the structure
  - store
```
public void store(OutputStream os)
           throws IOException
```
    Writes ClassFile to an OutputStream, in "class file" format.
    Notice that if an IOException is thrown, the class file is probably written incompletely and thus invalid. The calling method must take care of this situation, e.g. by closing the output stream and then deleting the file.
    
    Throws:
    
    IOException
  - getSourceResourceName
```
public static String getSourceResourceName(String className)
```
    Constructs the name of a resource that could contain the source code of the class with the className.
    Notice that member types are declared inside a different type, so the relevant source file is that of the outermost declaring class.
    
    Parameters:
    
    className - Fully qualified class name, e.g. "pkg1.pkg2.Outer$Inner"
    
    Returns:
    
    the name of the resource, e.g. "pkg1/pkg2/Outer.java"
  - getClassFileResourceName
```
public static String getClassFileResourceName(String className)
```
    Constructs the name of a resource that could contain the class file of the class with the className.
    
    Parameters:
    
    className - Fully qualified class name, e.g. "pkg1.pkg2.Outer$Inner"
    
    Returns:
    
    the name of the resource, e.g. "pkg1/pkg2/Outer$Inner.class"
  - toByteArray
```
public byte[] toByteArray()
```
    Returns the byte code of this ClassFile as a byte array.

Class ClassFile

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MAJOR_VERSION_JDK_1_1

MINOR_VERSION_JDK_1_1

MAJOR_VERSION_JDK_1_2

MINOR_VERSION_JDK_1_2

MAJOR_VERSION_JDK_1_3

MINOR_VERSION_JDK_1_3

MAJOR_VERSION_JDK_1_4

MINOR_VERSION_JDK_1_4

MAJOR_VERSION_JDK_1_5

MINOR_VERSION_JDK_1_5

MAJOR_VERSION_JDK_1_6

MINOR_VERSION_JDK_1_6

MAJOR_VERSION_JDK_1_7

MINOR_VERSION_JDK_1_7

MAJOR_VERSION_JDK_1_8

MINOR_VERSION_JDK_1_8

MAJOR_VERSION_JDK_1_9

MINOR_VERSION_JDK_1_9

MAJOR_VERSION_JDK_1_10

MINOR_VERSION_JDK_1_10

MAJOR_VERSION_JDK_1_11

MINOR_VERSION_JDK_1_11

MAJOR_VERSION_JDK_1_12

MINOR_VERSION_JDK_1_12

accessFlags

thisClass

superclass

interfaces

fieldInfos

methodInfos

Constructor Detail

ClassFile

ClassFile

Method Detail

addSourceFileAttribute

addDeprecatedAttribute

getInnerClassesAttribute

addInnerClassesAttributeEntry

getAnnotations

addAnnotationsAttributeEntry

getThisClassName

setVersion

getMajorVersion

getMinorVersion

addConstantClassInfo

addConstantFieldrefInfo

addConstantMethodrefInfo

addConstantInterfaceMethodrefInfo

addConstantStringInfo

addConstantIntegerInfo

addConstantFloatInfo

addConstantLongInfo

addConstantDoubleInfo

addConstantUtf8Info

addFieldInfo

addMethodInfo

getConstantPoolInfo

getConstantClassInfo

getConstantFieldrefInfo

getConstantInterfaceMethodrefInfo

getConstantInvokeDynamicInfo

getConstantMethodHandleInfo

getConstantMethodrefInfo

getConstantMethodTypeInfo

getConstantNameAndTypeInfo

getConstantUtf8Info

getConstantValuePoolInfo

getConstantPoolSize

getConstantUtf8

store

getSourceResourceName

getClassFileResourceName

toByteArray