org.apache.bcel.generic

## Class IfInstruction

- java.lang.Object
- - org.apache.bcel.generic.Instruction
  - - org.apache.bcel.generic.BranchInstruction
    - - org.apache.bcel.generic.IfInstruction

- All Implemented Interfaces:
    Cloneable, InstructionTargeter, StackConsumer
  Direct Known Subclasses:
    IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL

      public abstract class IfInstruction
      extends BranchInstruction
      implements StackConsumer

  Super class for the IFxxx family of instructions.

- - ### Field Summary

    - ### Fields inherited from class org.apache.bcel.generic.BranchInstruction

      `index, position, target`

    - ### Fields inherited from class org.apache.bcel.generic.Instruction

      `length, opcode`

  - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `IfInstruction(short opcode, InstructionHandle target)`

  - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `abstract IfInstruction` | `negate()`

    - ### Methods inherited from class org.apache.bcel.generic.BranchInstruction

      `containsTarget, dump, getIndex, getPosition, getTarget, getTargetOffset, getTargetOffset, initFromFile, setIndex, setPosition, setTarget, toString, updatePosition, updateTarget`

    - ### Methods inherited from class org.apache.bcel.generic.Instruction

      `accept, consumeStack, copy, equals, getComparator, getLength, getName, getOpcode, hashCode, isValidByte, isValidShort, produceStack, readInstruction, setComparator, toString, toString`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

    - ### Methods inherited from interface org.apache.bcel.generic.StackConsumer

      `consumeStack`

- - ### Constructor Detail

    - #### IfInstruction

          protected IfInstruction(short opcode,
                                  InstructionHandle target)

      Parameters:
        `opcode` - opcode of instruction
        `target` - Target instruction to branch to

  - ### Method Detail

    - #### negate

          public abstract IfInstruction negate()

      Returns:
        negation of instruction, e.g. IFEQ.negate() == IFNE

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