Modifier

Overview

Package

Class

Use

Deprecated

Index

Home >> All >> java >> lang >> [ reflect overview ]

PREV CLASS NEXT CLASS

SUMMARY:

JAVADOC |

Sourc code of java.lang.reflect.Modifier

SOURCE |

DOWNLOAD | NESTED | FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

java.lang.reflect
Class Modifier

java.lang.Object
  java.lang.reflect.Modifier

public class Modifier
extends java.lang.Object

Modifier is a helper class with static methods to determine whether an int returned from getModifiers() represents static, public, protected, native, final, etc... and provides an additional method to print out all of the modifiers in an int in order.

The methods in this class use the bitmask values in the VM spec to determine the modifiers of an int. This means that a VM must return a standard mask, conformant with the VM spec. I don't know if this is how Sun does it, but I'm willing to bet money that it is.

Since:: 1.1

Field Summary

static int ABSTRACT
          Abstract:
Class: may not be instantiated. Method: may not be called.

(package private) static int ALL_FLAGS
          All the flags, only used by code in this package.

(package private) static int BRIDGE
          Flag indicating a bridge method.

(package private) static int ENUM
          Flag indicating an enum constant or an enum class.

static int FINAL
          Final:
Class: no subclasses allowed. Field: cannot be changed. Method: cannot be overriden.

static int INTERFACE
          Interface: Class: is an interface.

static int NATIVE
          Native: Method: use JNI to call this method.

static int PRIVATE
          Private: accessible only from the same enclosing class.

static int PROTECTED
          Protected: accessible only to subclasses, or within the package.

static int PUBLIC
          Public: accessible from any other class.

static int STATIC
          Static:
Class: no enclosing instance for nested class. Field or Method: can be accessed or invoked without an instance of the declaring class.

static int STRICT
          Strictfp: Method: expressions are FP-strict.

(package private) static int SUPER
          Super - treat invokespecial as polymorphic so that super.foo() works according to the JLS.

static int SYNCHRONIZED
          Synchronized: Method: lock the class while calling this method.

(package private) static int SYNTHETIC
          Flag indicating a synthetic member.

static int TRANSIENT
          Transient: Field: not serialized or deserialized.

(package private) static int VARARGS
          Flag indicating a varargs method.

static int VOLATILE
          Volatile: Field: cannot be cached.

Constructor Summary

Modifier()
          This constructor really shouldn't be here ...

Method Summary

static boolean isAbstract(int mod)
          Check whether the given modifier is abstract.

static boolean isFinal(int mod)
          Check whether the given modifier is final.

static boolean isInterface(int mod)
          Check whether the given modifier is an interface.

static boolean isNative(int mod)
          Check whether the given modifier is native.

static boolean isPrivate(int mod)
          Check whether the given modifier is private.

static boolean isProtected(int mod)
          Check whether the given modifier is protected.

static boolean isPublic(int mod)
          Check whether the given modifier is public.

static boolean isStatic(int mod)
          Check whether the given modifier is static.

static boolean isStrict(int mod)
          Check whether the given modifier is strictfp.

static boolean isSynchronized(int mod)
          Check whether the given modifier is synchronized.

static boolean isTransient(int mod)
          Check whether the given modifier is transient.

static boolean isVolatile(int mod)
          Check whether the given modifier is volatile.

static java.lang.String toString(int mod)
          Get a string representation of all the modifiers represented by the given int.

(package private) static java.lang.StringBuffer toString(int mod, java.lang.StringBuffer r)
          Package helper method that can take a StringBuffer.

(package private) static java.lang.StringBuilder toString(int mod, java.lang.StringBuilder r)
          Package helper method that can take a StringBuilder.

Methods inherited from class java.lang.Object

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

Field Detail

PUBLIC

public static final int PUBLIC

Public: accessible from any other class.

See Also:: Constant Field Values

PRIVATE

public static final int PRIVATE

Private: accessible only from the same enclosing class.

See Also:: Constant Field Values

PROTECTED

public static final int PROTECTED

Protected: accessible only to subclasses, or within the package.

See Also:: Constant Field Values

STATIC

public static final int STATIC

Static:

Class: no enclosing instance for nested class.
Field or Method: can be accessed or invoked without an instance of the declaring class.

See Also:: Constant Field Values

FINAL

public static final int FINAL

Final:

Class: no subclasses allowed.
Field: cannot be changed.
Method: cannot be overriden.

See Also:: Constant Field Values

SYNCHRONIZED

public static final int SYNCHRONIZED

Synchronized: Method: lock the class while calling this method.

See Also:: Constant Field Values

VOLATILE

public static final int VOLATILE

Volatile: Field: cannot be cached.

See Also:: Constant Field Values

TRANSIENT

public static final int TRANSIENT

Transient: Field: not serialized or deserialized.

See Also:: Constant Field Values

NATIVE

public static final int NATIVE

Native: Method: use JNI to call this method.

See Also:: Constant Field Values

INTERFACE

public static final int INTERFACE

Interface: Class: is an interface.

See Also:: Constant Field Values

ABSTRACT

public static final int ABSTRACT

Abstract:

Class: may not be instantiated.
Method: may not be called.

See Also:: Constant Field Values

STRICT

public static final int STRICT

Strictfp: Method: expressions are FP-strict.

Also used as a modifier for classes, to mean that all initializers and constructors are FP-strict, but does not show up in Class.getModifiers.

See Also:: Constant Field Values

SUPER

static final int SUPER

Super - treat invokespecial as polymorphic so that super.foo() works according to the JLS. This is a reuse of the synchronized constant to patch a hole in JDK 1.0. *shudder*.

See Also:: Constant Field Values

ALL_FLAGS

static final int ALL_FLAGS

All the flags, only used by code in this package.

See Also:: Constant Field Values

BRIDGE

static final int BRIDGE

Flag indicating a bridge method.

See Also:: Constant Field Values

VARARGS

static final int VARARGS

Flag indicating a varargs method.

See Also:: Constant Field Values

SYNTHETIC

static final int SYNTHETIC

Flag indicating a synthetic member.

See Also:: Constant Field Values

ENUM

static final int ENUM

Flag indicating an enum constant or an enum class.

See Also:: Constant Field Values

Constructor Detail

Modifier

public Modifier()

This constructor really shouldn't be here ... there are no instance methods or variables of this class, so instantiation is worthless. However, this function is in the 1.1 spec, so it is added for completeness.

Method Detail

isAbstract

public static boolean isAbstract(int mod)

Check whether the given modifier is abstract.

isFinal

public static boolean isFinal(int mod)

Check whether the given modifier is final.

isInterface

public static boolean isInterface(int mod)

Check whether the given modifier is an interface.

isNative

public static boolean isNative(int mod)

Check whether the given modifier is native.

isPrivate

public static boolean isPrivate(int mod)

Check whether the given modifier is private.

isProtected

public static boolean isProtected(int mod)

Check whether the given modifier is protected.

isPublic

public static boolean isPublic(int mod)

Check whether the given modifier is public.

isStatic

public static boolean isStatic(int mod)

Check whether the given modifier is static.

isStrict

public static boolean isStrict(int mod)

Check whether the given modifier is strictfp.

isSynchronized

public static boolean isSynchronized(int mod)

Check whether the given modifier is synchronized.

isTransient

public static boolean isTransient(int mod)

Check whether the given modifier is transient.

isVolatile

public static boolean isVolatile(int mod)

Check whether the given modifier is volatile.

toString

public static java.lang.String toString(int mod)

Get a string representation of all the modifiers represented by the given int. The keywords are printed in this order:

<public|protected|private> abstract static final transient
 volatile synchronized native strictfp interface

toString

static java.lang.StringBuilder toString(int mod,
                                        java.lang.StringBuilder r)

Package helper method that can take a StringBuilder.

toString

static java.lang.StringBuffer toString(int mod,
                                       java.lang.StringBuffer r)

Package helper method that can take a StringBuffer.

Overview

Package

Class

Use

Deprecated

Index

Home >> All >> java >> lang >> [ reflect overview ]

PREV CLASS NEXT CLASS

SUMMARY:

JAVADOC |

SOURCE |

DOWNLOAD | NESTED | FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

Field Summary
`static int`	`ABSTRACT` Abstract: Class: may not be instantiated. Method: may not be called.
`(package private) static int`	`ALL_FLAGS` All the flags, only used by code in this package.
`(package private) static int`	`BRIDGE` Flag indicating a bridge method.
`(package private) static int`	`ENUM` Flag indicating an enum constant or an enum class.
`static int`	`FINAL` Final: Class: no subclasses allowed. Field: cannot be changed. Method: cannot be overriden.
`static int`	`INTERFACE` Interface: Class: is an interface.
`static int`	`NATIVE` Native: Method: use JNI to call this method.
`static int`	`PRIVATE` Private: accessible only from the same enclosing class.
`static int`	`PROTECTED` Protected: accessible only to subclasses, or within the package.
`static int`	`PUBLIC` Public: accessible from any other class.
`static int`	`STATIC` Static: Class: no enclosing instance for nested class. Field or Method: can be accessed or invoked without an instance of the declaring class.
`static int`	`STRICT` Strictfp: Method: expressions are FP-strict.
`(package private) static int`	`SUPER` Super - treat invokespecial as polymorphic so that super.foo() works according to the JLS.
`static int`	`SYNCHRONIZED` Synchronized: Method: lock the class while calling this method.
`(package private) static int`	`SYNTHETIC` Flag indicating a synthetic member.
`static int`	`TRANSIENT` Transient: Field: not serialized or deserialized.
`(package private) static int`	`VARARGS` Flag indicating a varargs method.
`static int`	`VOLATILE` Volatile: Field: cannot be cached.

Constructor Summary
`Modifier()` This constructor really shouldn't be here ...

Method Summary
`static boolean`	`isAbstract(int mod)` Check whether the given modifier is abstract.
`static boolean`	`isFinal(int mod)` Check whether the given modifier is final.
`static boolean`	`isInterface(int mod)` Check whether the given modifier is an interface.
`static boolean`	`isNative(int mod)` Check whether the given modifier is native.
`static boolean`	`isPrivate(int mod)` Check whether the given modifier is private.
`static boolean`	`isProtected(int mod)` Check whether the given modifier is protected.
`static boolean`	`isPublic(int mod)` Check whether the given modifier is public.
`static boolean`	`isStatic(int mod)` Check whether the given modifier is static.
`static boolean`	`isStrict(int mod)` Check whether the given modifier is strictfp.
`static boolean`	`isSynchronized(int mod)` Check whether the given modifier is synchronized.
`static boolean`	`isTransient(int mod)` Check whether the given modifier is transient.
`static boolean`	`isVolatile(int mod)` Check whether the given modifier is volatile.
`static java.lang.String`	`toString(int mod)` Get a string representation of all the modifiers represented by the given int.
`(package private) static java.lang.StringBuffer`	`toString(int mod, java.lang.StringBuffer r)` Package helper method that can take a StringBuffer.
`(package private) static java.lang.StringBuilder`	`toString(int mod, java.lang.StringBuilder r)` Package helper method that can take a StringBuilder.

java.lang.reflect Class Modifier

PUBLIC

PRIVATE

PROTECTED

STATIC

FINAL

SYNCHRONIZED

VOLATILE

TRANSIENT

NATIVE

INTERFACE

ABSTRACT

STRICT

SUPER

ALL_FLAGS

BRIDGE

VARARGS

SYNTHETIC

ENUM

Modifier

isAbstract

isFinal

isInterface

isNative

isPrivate

isProtected

isPublic

isStatic

isStrict

isSynchronized

isTransient

isVolatile

toString

toString

toString

java.lang.reflect
Class Modifier