StackInstruction

java.lang.Object
- org.apache.bcel.generic.Instruction
- - org.apache.bcel.generic.StackInstruction

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, POP, POP2, SWAP
```
public abstract class StackInstruction
extends Instruction
```
Super class for stack operations like DUP and POP.

Field Summary
- Fields inherited from class org.apache.bcel.generic.Instruction
  EMPTY_ARRAY, length, opcode

Constructor Summary

Constructors
Modifier	Constructor	Description
`(package private)`	`StackInstruction()`	Empty constructor needed for Instruction.readInstruction.
`protected`	`StackInstruction(short opcode)`	Constructs a StackInstruction.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

Type getType(ConstantPoolGen cp)
Gets the type.
- Methods inherited from class org.apache.bcel.generic.Instruction
  accept, consumeStack, copy, dispose, dump, equals, getComparator, getLength, getName, getOpcode, hashCode, initFromFile, isValidByte, isValidShort, produceStack, readInstruction, setComparator, setLength, setOpcode, toString, toString, toString
- Methods inherited from class java.lang.Object
  clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - StackInstruction
```
StackInstruction()
```
    Empty constructor needed for Instruction.readInstruction. Not to be used otherwise.
  - StackInstruction
```
protected StackInstruction(short opcode)
```
    Constructs a StackInstruction.
    
    Parameters:
    
    opcode - instruction opcode.
- Method Detail
  - getType
```
public Type getType(ConstantPoolGen cp)
```
    Gets the type.
    
    Parameters:
    
    cp - the constant pool.
    
    Returns:
    
    Type.UNKNOWN.