Module java.base

Package java.lang

Enum Class StackWalker.Option

java.lang.Object

java.lang.Enum<StackWalker.Option>

java.lang.StackWalker.Option

All Implemented Interfaces:

Serializable, Comparable<StackWalker.Option>, Constable

Enclosing class:

StackWalker

public static enum StackWalker.Option
extends Enum<StackWalker.Option>

Stack walker option to configure the stack frame information obtained by a StackWalker.

Since:

9

Nested Class Summary

Nested classes/interfaces declared in class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
DROP_METHOD_INFO	Drops the method information from StackFrames walked by this StackWalker.
RETAIN_CLASS_REFERENCE	Retains Class object in StackFrames walked by this StackWalker.
SHOW_HIDDEN_FRAMES	Shows all hidden frames.
SHOW_REFLECT_FRAMES	Shows all reflection frames.

Method Summary

Modifier and Type	Method	Description
static StackWalker.Option	valueOf(String name)	Returns the enum constant of this class with the specified name.
static StackWalker.Option[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods declared in class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods declared in class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

RETAIN_CLASS_REFERENCE

public static final StackWalker.Option RETAIN_CLASS_REFERENCE

Retains Class object in StackFrames walked by this StackWalker.

A StackWalker configured with this option will support StackWalker.getCallerClass() and StackFrame.getDeclaringClass().

DROP_METHOD_INFO

public static final StackWalker.Option DROP_METHOD_INFO

Drops the method information from StackFrames walked by this StackWalker.

A StackWalker configured with this option will drop the method name, the method type, the line number, the bytecode index, the source file name and native method or not.

Since:

22

SHOW_REFLECT_FRAMES

public static final StackWalker.Option SHOW_REFLECT_FRAMES

Shows all reflection frames.

By default, reflection frames are hidden. A StackWalker configured with this SHOW_REFLECT_FRAMES option will show all reflection frames that include Method.invoke(java.lang.Object, java.lang.Object...) and Constructor.newInstance(Object...) and their reflection implementation classes.

The SHOW_HIDDEN_FRAMES option can also be used to show all reflection frames and it will also show other hidden frames that are implementation-specific.

API Note:

This option includes the stack frames representing the invocation of Method and Constructor. Any utility methods that are equivalent to calling Method.invoke or Constructor.newInstance such as Class.newInstance are not filtered or controlled by any stack walking option.

SHOW_HIDDEN_FRAMES

public static final StackWalker.Option SHOW_HIDDEN_FRAMES

Shows all hidden frames.

A Java Virtual Machine implementation may hide implementation specific frames in addition to reflection frames. A StackWalker with this SHOW_HIDDEN_FRAMES option will show all hidden frames (including reflection frames).

Method Details

values

public static StackWalker.Option[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static StackWalker.Option valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null