Constant (Classycle)

java.lang.Object
- classycle.classfile.Constant

Direct Known Subclasses:

ClassConstant, DoubleConstant, FloatConstant, IntConstant, InvokeDynamicConstant, LongConstant, MethodHandleConstant, MethodTypeConstant, NameAndTypeConstant, RefConstant, StringConstant, UTF8Constant
```
public abstract class Constant
extends java.lang.Object
```
Abstract super class of all type of constants in the constant pool of a class file.

Author:

Franz-Josef Elmer

Constructor Summary

Constructors
Constructor Description

Constant(Constant[] pool)
Creates an instance.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static Constant[]`	`extractConstantPool(java.io.DataInputStream stream)`	Extracts the constant pool from the specified data stream of a class file.
`Constant`	`getConstant(int index)`	Returns the specified constant from the pool.

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

- Constructor Detail
  - Constant
```
public Constant(Constant[] pool)
```
    Creates an instance.
    
    Parameters:
    
    pool - The poole which will be needed to resolve references.
- Method Detail
  - extractConstantPool
```
public static Constant[] extractConstantPool(java.io.DataInputStream stream)
                                      throws java.io.IOException
```
    Extracts the constant pool from the specified data stream of a class file.
    
    Parameters:
    
    stream - Input stream of a class file starting at the first byte.
    
    Returns:
    
    extracted array of constants.
    
    Throws:
    
    java.io.IOException - in case of reading errors or invalid class file.
  - getConstant
```
public Constant getConstant(int index)
```
    Returns the specified constant from the pool.
    
    Parameters:
    
    index - Index of requested constant.