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Class Modifier

java.lang.Object
java.lang.reflect.Modifier
public class Modifier extends Object
The Modifier class provides static methods and constants to decode class and member access modifiers. The sets of modifiers are represented as integers with distinct bit positions representing different modifiers. The values for the constants representing the modifiers are taken from the tables in sections 4.1, 4.4, 4.5, and 4.7 of The Java Virtual Machine Specification.
Since:
1.1
See Also:

Field Summary

Modifier and Type Field Description
static final int ABSTRACT
The int value representing the abstract modifier.
static final int FINAL
The int value representing the final modifier.
static final int INTERFACE
The int value representing the interface modifier.
static final int NATIVE
The int value representing the native modifier.
static final int PRIVATE
The int value representing the private modifier.
static final int PROTECTED
The int value representing the protected modifier.
static final int PUBLIC
The int value representing the public modifier.
static final int STATIC
The int value representing the static modifier.
static final int STRICT
The int value representing the strictfp modifier.
static final int SYNCHRONIZED
The int value representing the synchronized modifier.
static final int TRANSIENT
The int value representing the transient modifier.
static final int VOLATILE
The int value representing the volatile modifier.

Method Summary

Modifier and Type Method Description
static int classModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to a class.
static int constructorModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to a constructor.
static int fieldModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to a field.
static int interfaceModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to an interface.
static boolean isAbstract(int mod)
Return true if the integer argument includes the abstract modifier, false otherwise.
static boolean isFinal(int mod)
Return true if the integer argument includes the final modifier, false otherwise.
static boolean isInterface(int mod)
Return true if the integer argument includes the interface modifier, false otherwise.
static boolean isNative(int mod)
Return true if the integer argument includes the native modifier, false otherwise.
static boolean isPrivate(int mod)
Return true if the integer argument includes the private modifier, false otherwise.
static boolean isProtected(int mod)
Return true if the integer argument includes the protected modifier, false otherwise.
static boolean isPublic(int mod)
Return true if the integer argument includes the public modifier, false otherwise.
static boolean isStatic(int mod)
Return true if the integer argument includes the static modifier, false otherwise.
static boolean isStrict(int mod)
Return true if the integer argument includes the strictfp modifier, false otherwise.
static boolean isSynchronized(int mod)
Return true if the integer argument includes the synchronized modifier, false otherwise.
static boolean isTransient(int mod)
Return true if the integer argument includes the transient modifier, false otherwise.
static boolean isVolatile(int mod)
Return true if the integer argument includes the volatile modifier, false otherwise.
static int methodModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to a method.
static int parameterModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to a parameter.
static String toString(int mod)
Return a string describing the access modifier flags in the specified modifier.

Methods declared in class java.lang.Object

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

Field Details

PUBLIC

public static final int PUBLIC
The int value representing the public modifier.
See Also:

PRIVATE

public static final int PRIVATE
The int value representing the private modifier.
See Also:

PROTECTED

public static final int PROTECTED
The int value representing the protected modifier.
See Also:

STATIC

public static final int STATIC
The int value representing the static modifier.
See Also:

FINAL

public static final int FINAL
The int value representing the final modifier.
See Also:

SYNCHRONIZED

public static final int SYNCHRONIZED
The int value representing the synchronized modifier.
See Also:

VOLATILE

public static final int VOLATILE
The int value representing the volatile modifier.
See Also:

TRANSIENT

public static final int TRANSIENT
The int value representing the transient modifier.
See Also:

NATIVE

public static final int NATIVE
The int value representing the native modifier.
See Also:

INTERFACE

public static final int INTERFACE
The int value representing the interface modifier.
See Also:

ABSTRACT

public static final int ABSTRACT
The int value representing the abstract modifier.
See Also:

STRICT

public static final int STRICT
The int value representing the strictfp modifier.
See Also:

Method Details

isPublic

public static boolean isPublic(int mod)
Return true if the integer argument includes the public modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the public modifier; false otherwise.

isPrivate

public static boolean isPrivate(int mod)
Return true if the integer argument includes the private modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the private modifier; false otherwise.

isProtected

public static boolean isProtected(int mod)
Return true if the integer argument includes the protected modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the protected modifier; false otherwise.

isStatic

public static boolean isStatic(int mod)
Return true if the integer argument includes the static modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the static modifier; false otherwise.

isFinal

public static boolean isFinal(int mod)
Return true if the integer argument includes the final modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the final modifier; false otherwise.

isSynchronized

public static boolean isSynchronized(int mod)
Return true if the integer argument includes the synchronized modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the synchronized modifier; false otherwise.

isVolatile

public static boolean isVolatile(int mod)
Return true if the integer argument includes the volatile modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the volatile modifier; false otherwise.

isTransient

public static boolean isTransient(int mod)
Return true if the integer argument includes the transient modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the transient modifier; false otherwise.

isNative

public static boolean isNative(int mod)
Return true if the integer argument includes the native modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the native modifier; false otherwise.

isInterface

public static boolean isInterface(int mod)
Return true if the integer argument includes the interface modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the interface modifier; false otherwise.

isAbstract

public static boolean isAbstract(int mod)
Return true if the integer argument includes the abstract modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the abstract modifier; false otherwise.

isStrict

public static boolean isStrict(int mod)
Return true if the integer argument includes the strictfp modifier, false otherwise.
Parameters:
mod - a set of modifiers
Returns:
true if mod includes the strictfp modifier; false otherwise.

toString

public static String toString(int mod)
Return a string describing the access modifier flags in the specified modifier. For example:
    public final synchronized strictfp
 
The modifier names are returned in an order consistent with the suggested modifier orderings given in sections 8.1.1, 8.3.1, 8.4.3, 8.8.3, and 9.1.1 of The Java Language Specification. The full modifier ordering used by this method is:
public protected private abstract static final transient volatile synchronized native strictfp interface
The interface modifier discussed in this class is not a true modifier in the Java language and it appears after all other modifiers listed by this method. This method may return a string of modifiers that are not valid modifiers of a Java entity; in other words, no checking is done on the possible validity of the combination of modifiers represented by the input. Note that to perform such checking for a known kind of entity, such as a constructor or method, first AND the argument of toString with the appropriate mask from a method like constructorModifiers() or methodModifiers().
Parameters:
mod - a set of modifiers
Returns:
a string representation of the set of modifiers represented by mod

classModifiers

public static int classModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to a class.
Returns:
an int value OR-ing together the source language modifiers that can be applied to a class.
See Java Language Specification:
8.1.1 Class Modifiers
Since:
1.7

interfaceModifiers

public static int interfaceModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to an interface.
Returns:
an int value OR-ing together the source language modifiers that can be applied to an interface.
See Java Language Specification:
9.1.1 Interface Modifiers
Since:
1.7

constructorModifiers

public static int constructorModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to a constructor.
Returns:
an int value OR-ing together the source language modifiers that can be applied to a constructor.
See Java Language Specification:
8.8.3 Constructor Modifiers
Since:
1.7

methodModifiers

public static int methodModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to a method.
Returns:
an int value OR-ing together the source language modifiers that can be applied to a method.
See Java Language Specification:
8.4.3 Method Modifiers
Since:
1.7

fieldModifiers

public static int fieldModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to a field.
Returns:
an int value OR-ing together the source language modifiers that can be applied to a field.
See Java Language Specification:
8.3.1 Field Modifiers
Since:
1.7

parameterModifiers

public static int parameterModifiers()
Return an int value OR-ing together the source language modifiers that can be applied to a parameter.
Returns:
an int value OR-ing together the source language modifiers that can be applied to a parameter.
See Java Language Specification:
8.4.1 Formal Parameters
Since:
1.8

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/reflect/Modifier.html