Interface ExceptionCatch

All Superinterfaces:: ClassFileElement, CodeElement, PseudoInstruction

public sealed interface ExceptionCatch extends PseudoInstruction

A pseudo-instruction modeling an entry in the exception_table array of a Code attribute. Catch (JVMS Â§3.12) and finally (JVMS Â§3.14) blocks in Java source code compile to exception table entries. The order of exception table entries is significant: when an exception is thrown in a method, execution branches to the first matching exception handler if such a handler exists (JVMS Â§2.10). Delivered as a CodeElement when traversing the contents of a CodeModel.

An exception table entry is composite:

ExceptionCatch(
    Label handler,
    Label tryStart,
    Label tryEnd,
    Optional<ClassEntry> catchType
)

See Java Virtual Machine Specification:

4.7.3 The Code Attribute

Since:

See Also:

Method Summary

Modifier and Type	Method	Description
`Optional<ClassEntry>`	`catchType()`	Returns the type of the exception to catch, or empty if this handler catches everything.
`Label`	`handler()`	Returns the handler for the exception.
`static ExceptionCatch`	`of(Label handler, Label tryStart, Label tryEnd)`	Returns an exception table pseudo-instruction to catch everything.
`static ExceptionCatch`	`of(Label handler, Label tryStart, Label tryEnd, Optional<ClassEntry> catchTypeEntry)`	Returns an exception table pseudo-instruction.
`Label`	`tryEnd()`	Returns the end of the instruction range for the guarded instructions.
`Label`	`tryStart()`	Returns the beginning of the instruction range for the guarded instructions.

Method Details

handler

Label handler()

Returns the handler for the exception.

Returns:: the handler for the exception

tryStart

Label tryStart()

Returns the beginning of the instruction range for the guarded instructions.

Returns:: the beginning of the instruction range for the guarded instructions

tryEnd

Label tryEnd()

Returns the end of the instruction range for the guarded instructions.

Returns:: the end of the instruction range for the guarded instructions

catchType

Optional<ClassEntry> catchType()

Returns the type of the exception to catch, or empty if this handler catches everything.

Returns:: the type of the exception to catch, or empty if this handler catches everything

of

static ExceptionCatch of(Label handler, Label tryStart, Label tryEnd, Optional<ClassEntry> catchTypeEntry)

Returns an exception table pseudo-instruction.

Parameters:: handler - the handler for the exception; tryStart - the beginning of the instruction range for the guarded instructions; tryEnd - the end of the instruction range for the guarded instructions; catchTypeEntry - the type of exception to catch, or empty if this handler is unconditional
Returns:: an exception table pseudo-instruction

of

static ExceptionCatch of(Label handler, Label tryStart, Label tryEnd)

Returns an exception table pseudo-instruction to catch everything.

Parameters:: handler - the handler for the exception; tryStart - the beginning of the instruction range for the guarded instructions; tryEnd - the end of the instruction range for the guarded instructions
Returns:: an exception table pseudo-instruction to catch everything

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