Package org.apache.tomcat.util.bcel

Class Const

java.lang.Object

org.apache.tomcat.util.bcel.Const

public final class Const
extends Object

Constants for the project, mostly defined in the JVM specification.

Field Summary

Fields

Modifier and Type	Field	Description
static final short	ACC_ABSTRACT	One of the access flags for methods or classes: 1024.
static final short	ACC_ANNOTATION	One of the access flags for classes: 8192.
static final short	ACC_FINAL	One of the access flags for fields, methods, or classes: 16.
static final short	ACC_INTERFACE	One of the access flags for classes: 512.
static final byte	CONSTANT_Class	Marks a constant pool entry as a Class: 0x7.
static final byte	CONSTANT_Double	Marks a constant pool entry as type Double: 0x6.
static final byte	CONSTANT_Dynamic	Marks a constant pool entry as dynamically computed: 0x11.
static final byte	CONSTANT_Fieldref	Marks a constant pool entry as a Field Reference: 0x9.
static final byte	CONSTANT_Float	Marks a constant pool entry as type Float: 0x4.
static final byte	CONSTANT_Integer	Marks a constant pool entry as type Integer: 0x3.
static final byte	CONSTANT_InterfaceMethodref	Marks a constant pool entry as an Interface Method Reference: 0xb.
static final byte	CONSTANT_InvokeDynamic	Marks a constant pool entry as an Invoke Dynamic: 0x12.
static final byte	CONSTANT_Long	Marks a constant pool entry as type Long: 0x5.
static final byte	CONSTANT_MethodHandle	Marks a constant pool entry as a Method Handle: 0xf.
static final byte	CONSTANT_Methodref	Marks a constant pool entry as a Method Reference: 0xa.
static final byte	CONSTANT_MethodType	Marks a constant pool entry as a Method Type: 0x10.
static final byte	CONSTANT_Module	Marks a constant pool entry as a Module Reference: 0x13.
static final byte	CONSTANT_NameAndType	Marks a constant pool entry as a name and type: 0xc.
static final byte	CONSTANT_Package	Marks a constant pool entry as a Package Reference: 0x14.
static final byte	CONSTANT_String	Marks a constant pool entry as type String: 0x8.
static final byte	CONSTANT_Utf8	Marks a constant pool entry as type UTF-8: 0x1.
static final int	JVM_CLASSFILE_MAGIC	Java class file format Magic number: -889275714.
static final int	MAX_ARRAY_DIMENSIONS	The maximum number of dimensions in an array: 255.

Constructor Summary

Constructors

Constructor	Description
Const()

Method Summary

Modifier and Type	Method	Description
static String	getConstantName(int index)	Get the CONSTANT_NAMES entry at the given index.

Methods inherited from class java.lang.Object

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

Field Details

JVM_CLASSFILE_MAGIC

public static final int JVM_CLASSFILE_MAGIC

Java class file format Magic number: -889275714.

See Also:

• The ClassFile Structure in The Java Virtual Machine Specification
• Constant Field Values

ACC_FINAL

public static final short ACC_FINAL

One of the access flags for fields, methods, or classes: 16.

See Also:

• Flag definitions for Classes in the Java Virtual Machine Specification (Java SE 9 Edition).
• Flag definitions for Fields in the Java Virtual Machine Specification (Java SE 9 Edition).
• Flag definitions for Methods in the Java Virtual Machine Specification (Java SE 9 Edition).
• Flag definitions for Inner Classes in the Java Virtual Machine Specification (Java SE 9 Edition).
• Constant Field Values

ACC_INTERFACE

public static final short ACC_INTERFACE

One of the access flags for classes: 512.

See Also:

• ACC_FINAL
• Constant Field Values

ACC_ABSTRACT

public static final short ACC_ABSTRACT

One of the access flags for methods or classes: 1024.

See Also:

• ACC_FINAL
• Constant Field Values

ACC_ANNOTATION

public static final short ACC_ANNOTATION

One of the access flags for classes: 8192.

See Also:

• ACC_FINAL
• Constant Field Values

CONSTANT_Utf8

public static final byte CONSTANT_Utf8

Marks a constant pool entry as type UTF-8: 0x1.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_Integer

public static final byte CONSTANT_Integer

Marks a constant pool entry as type Integer: 0x3.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_Float

public static final byte CONSTANT_Float

Marks a constant pool entry as type Float: 0x4.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_Long

public static final byte CONSTANT_Long

Marks a constant pool entry as type Long: 0x5.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_Double

public static final byte CONSTANT_Double

Marks a constant pool entry as type Double: 0x6.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_Class

public static final byte CONSTANT_Class

Marks a constant pool entry as a Class: 0x7.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_Fieldref

public static final byte CONSTANT_Fieldref

Marks a constant pool entry as a Field Reference: 0x9.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_String

public static final byte CONSTANT_String

Marks a constant pool entry as type String: 0x8.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_Methodref

public static final byte CONSTANT_Methodref

Marks a constant pool entry as a Method Reference: 0xa.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_InterfaceMethodref

public static final byte CONSTANT_InterfaceMethodref

Marks a constant pool entry as an Interface Method Reference: 0xb.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_NameAndType

public static final byte CONSTANT_NameAndType

Marks a constant pool entry as a name and type: 0xc.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_MethodHandle

public static final byte CONSTANT_MethodHandle

Marks a constant pool entry as a Method Handle: 0xf.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_MethodType

public static final byte CONSTANT_MethodType

Marks a constant pool entry as a Method Type: 0x10.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_Dynamic

public static final byte CONSTANT_Dynamic

Marks a constant pool entry as dynamically computed: 0x11.

See Also:

• Change request for JEP 309
• Constant Field Values

CONSTANT_InvokeDynamic

public static final byte CONSTANT_InvokeDynamic

Marks a constant pool entry as an Invoke Dynamic: 0x12.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_Module

public static final byte CONSTANT_Module

Marks a constant pool entry as a Module Reference: 0x13.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

CONSTANT_Package

public static final byte CONSTANT_Package

Marks a constant pool entry as a Package Reference: 0x14.

See Also:

• The Constant Pool in The Java Virtual Machine Specification
• Constant Field Values

MAX_ARRAY_DIMENSIONS

public static final int MAX_ARRAY_DIMENSIONS

The maximum number of dimensions in an array: 255. One of the limitations of the Java Virtual Machine.

See Also:

• Field Descriptors in The Java Virtual Machine Specification
• Constant Field Values

Constructor Details

Const

public Const()

Method Details

getConstantName

public static String getConstantName(int index)

Get the CONSTANT_NAMES entry at the given index.

Parameters:

index - index into CONSTANT_NAMES.

Returns:

the CONSTANT_NAMES entry at the given index