Package org.apache.tomcat.util.bcel.classfile

Class ConstantPool

java.lang.Object

org.apache.tomcat.util.bcel.classfile.ConstantPool

public class ConstantPool
extends java.lang.Object

This class represents the constant pool, i.e., a table of constants, of a parsed classfile. It may contain null references, due to the JVM specification that skips an entry after an 8-byte constant (double, long) entry. Those interested in generating constant pools programatically should see ConstantPoolGen.

See Also:

Constant

Method Summary

Modifier and Type	Method	Description
Constant	getConstant(int index)	Get constant from constant pool.
Constant	getConstant(int index, byte tag)	Get constant from constant pool and check whether it has the expected type.

Methods inherited from class java.lang.Object

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

Method Detail

getConstant

public Constant getConstant(int index)

Get constant from constant pool.

Parameters:

index - Index in constant pool

Returns:

Constant value

See Also:

Constant

getConstant

public Constant getConstant(int index,
                            byte tag)
                     throws ClassFormatException

Get constant from constant pool and check whether it has the expected type.

Parameters:

index - Index in constant pool

tag - Tag of expected constant, i.e., its type

Returns:

Constant value

Throws:

ClassFormatException - If the constant is not of the expected type

See Also:

Constant