Module java.base

Package java.lang

Enum StackWalker.Option

java.lang.Object

java.lang.Enum<StackWalker.Option>

java.lang.StackWalker.Option

All Implemented Interfaces:

Serializable, Comparable<StackWalker.Option>

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

Enum Constant Summary

Enum Constants

Enum Constant	Description
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 type with the specified name.
static StackWalker.Option[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

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().

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 Detail

values

public static StackWalker.Option[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (StackWalker.Option c : StackWalker.Option.values())
    System.out.println(c);

Returns:

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

valueOf

public static StackWalker.Option valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null