java.lang.Object
- org.apache.bcel.generic.Type

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

BasicType, DOUBLE_Upper, LONG_Upper, ReferenceType, ReturnaddressType
```
public abstract class Type
extends java.lang.Object
implements java.io.Serializable
```
Abstract super class for all possible java types, namely basic types such as int, object types like String and array types, e.g. int[]

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static BasicType`	`BOOLEAN`
`static BasicType`	`BYTE`
`static BasicType`	`CHAR`
`static ObjectType`	`CLASS`
`static BasicType`	`DOUBLE`
`static BasicType`	`FLOAT`
`static BasicType`	`INT`
`static BasicType`	`LONG`
`static Type[]`	`NO_ARGS`
`static ReferenceType`	`NULL`
`static ObjectType`	`OBJECT`
`static BasicType`	`SHORT`
`protected java.lang.String`	`signature`
`static ObjectType`	`STRING`
`static ObjectType`	`STRINGBUFFER`
`static ObjectType`	`THROWABLE`
`protected byte`	`type`
`static Type`	`UNKNOWN`
`static BasicType`	`VOID`	Predefined constants

Constructor Summary

Constructors
Modifier Constructor Description

protected Type(byte t, java.lang.String s)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(java.lang.Object o)`
`static Type[]`	`getArgumentTypes(java.lang.String signature)`	Convert arguments of a method (signature) to an array of Type objects.
`static java.lang.String`	`getMethodSignature(Type return_type, Type[] arg_types)`	Convert type to Java method signature, e.g.
`static Type`	`getReturnType(java.lang.String signature)`	Convert return value of a method (signature) to a Type object.
`java.lang.String`	`getSignature()`
`static java.lang.String`	`getSignature(java.lang.reflect.Method meth)`
`int`	`getSize()`
`byte`	`getType()`
`static Type`	`getType(java.lang.Class<?> cl)`	Convert runtime java.lang.Class to BCEL Type object.
`static Type`	`getType(java.lang.String signature)`	Convert signature to a Type object.
`static Type[]`	`getTypes(java.lang.Class<?>[] classes)`	Convert runtime java.lang.Class[] to BCEL Type objects.
`int`	`hashCode()`
`java.lang.String`	`toString()`

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

Field Detail

type
```
protected final byte type
```

signature
```
protected java.lang.String signature
```

VOID
```
public static final BasicType VOID
```
Predefined constants

BOOLEAN
```
public static final BasicType BOOLEAN
```

INT
```
public static final BasicType INT
```

SHORT
```
public static final BasicType SHORT
```

BYTE
```
public static final BasicType BYTE
```

LONG
```
public static final BasicType LONG
```

DOUBLE
```
public static final BasicType DOUBLE
```

FLOAT
```
public static final BasicType FLOAT
```

CHAR
```
public static final BasicType CHAR
```

OBJECT
```
public static final ObjectType OBJECT
```

CLASS
```
public static final ObjectType CLASS
```

STRING
```
public static final ObjectType STRING
```

STRINGBUFFER

public static final ObjectType STRINGBUFFER

THROWABLE

public static final ObjectType THROWABLE

NO_ARGS
```
public static final Type[] NO_ARGS
```

NULL
```
public static final ReferenceType NULL
```

UNKNOWN
```
public static final Type UNKNOWN
```

Constructor Detail

Type

protected Type(byte t,
               java.lang.String s)

Method Detail
- hashCode
```
public int hashCode()
```
  Overrides:
  
  hashCode in class java.lang.Object
  
  Returns:
  
  hashcode of Type
- equals
```
public boolean equals(java.lang.Object o)
```
  Overrides:
  
  equals in class java.lang.Object
  
  Returns:
  
  whether the Types are equal
- getSignature
```
public java.lang.String getSignature()
```
  Returns:
  
  signature for given type.
- getType
```
public byte getType()
```
  Returns:
  
  type as defined in Constants
- getSize
```
public int getSize()
```
  Returns:
  
  stack size of this type (2 for long and double, 0 for void, 1 otherwise)
- toString
```
public java.lang.String toString()
```
  Overrides:
  
  toString in class java.lang.Object
  
  Returns:
  
  Type string, e.g. `int[]'
- getMethodSignature
```
public static java.lang.String getMethodSignature(Type return_type,
                                                  Type[] arg_types)
```
  Convert type to Java method signature, e.g. int[] f(java.lang.String x) becomes (Ljava/lang/String;)[I
  
  Parameters:
  
  return_type - what the method returns
  
  arg_types - what are the argument types
  
  Returns:
  
  method signature for given type(s).
- getType
```
public static final Type getType(java.lang.String signature)
                          throws java.lang.StringIndexOutOfBoundsException
```
  Convert signature to a Type object.
  
  Parameters:
  
  signature - signature string such as Ljava/lang/String;
  
  Returns:
  
  type object
  
  Throws:
  
  java.lang.StringIndexOutOfBoundsException
- getReturnType
```
public static Type getReturnType(java.lang.String signature)
```
  Convert return value of a method (signature) to a Type object.
  
  Parameters:
  
  signature - signature string such as (Ljava/lang/String;)V
  
  Returns:
  
  return type
- getArgumentTypes
```
public static Type[] getArgumentTypes(java.lang.String signature)
```
  Convert arguments of a method (signature) to an array of Type objects.
  
  Parameters:
  
  signature - signature string such as (Ljava/lang/String;)V
  
  Returns:
  
  array of argument types
- getType
```
public static Type getType(java.lang.Class<?> cl)
```
  Convert runtime java.lang.Class to BCEL Type object.
  
  Parameters:
  
  cl - Java class
  
  Returns:
  
  corresponding Type object
- getTypes
```
public static Type[] getTypes(java.lang.Class<?>[] classes)
```
  Convert runtime java.lang.Class[] to BCEL Type objects.
  
  Parameters:
  
  classes - an array of runtime class objects
  
  Returns:
  
  array of corresponding Type objects
- getSignature
```
public static java.lang.String getSignature(java.lang.reflect.Method meth)
```

Class Type

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

type

signature

VOID

BOOLEAN

INT

SHORT

BYTE

LONG

DOUBLE

FLOAT

CHAR

OBJECT

CLASS

STRING

STRINGBUFFER

THROWABLE

NO_ARGS

NULL

UNKNOWN

Constructor Detail

Type

Method Detail

hashCode

equals

getSignature

getType

getSize

toString

getMethodSignature

getType

getReturnType

getArgumentTypes

getType

getTypes

getSignature