Top Description Fields Constructors Methods
java.lang

public Class Exception

extends Throwable
Class Inheritance
Known Direct Subclasses
java.lang.InterruptedException, java.lang.ReflectiveOperationException, java.lang.RuntimeException, java.util.TooManyListenersException, java.io.IOException, java.lang.invoke.LambdaConversionException, java.lang.invoke.StringConcatException, java.net.URISyntaxException, java.security.GeneralSecurityException, java.security.PrivilegedActionException, java.text.ParseException, java.util.concurrent.BrokenBarrierException, java.util.concurrent.ExecutionException, java.util.concurrent.TimeoutException, java.util.zip.DataFormatException, javax.security.auth.DestroyFailedException, javax.security.auth.RefreshFailedException, javax.security.auth.callback.UnsupportedCallbackException, javax.security.cert.CertificateException, jdk.internal.org.xml.sax.SAXException, jdk.internal.util.xml.XMLStreamException, jdk.internal.vm.TranslatedException, sun.nio.fs.UnixException, sun.util.locale.LocaleSyntaxException, jdk.internal.org.objectweb.asm.tree.analysis.AnalyzerException, sun.net.ftp.FtpProtocolException, sun.security.ec.ECOperations.IntermediateValueException, java.lang.CloneNotSupportedException

The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.

The class Exception and any subclasses that are not also subclasses of RuntimeException are checked exceptions. Checked exceptions need to be declared in a method or constructor's throws clause if they can be thrown by the execution of the method or constructor and propagate outside the method or constructor boundary.

Author
Frank Yellin
Since
1.0
Java Language Specification
11.2 Compile-Time Checking of Exceptions
See Also
java.lang.Error

Field Summary

Modifier and TypeField and Description
pack-priv static final long
Inherited from java.lang.Throwable:
jfrTracing

Constructor Summary

AccessConstructor and Description
public
Exception()

Constructs a new exception with null as its detail message.

public
Exception(String
the detail message. The detail message is saved for later retrieval by the getMessage() method.
message
)

Constructs a new exception with the specified detail message.

public
Exception(String
the detail message (which is saved for later retrieval by the getMessage() method).
message
,
Throwable
the cause (which is saved for later retrieval by the getCause() method). (A null value is permitted, and indicates that the cause is nonexistent or unknown.)
cause
)

Constructs a new exception with the specified detail message and cause.

public
Exception(Throwable
the cause (which is saved for later retrieval by the getCause() method). (A null value is permitted, and indicates that the cause is nonexistent or unknown.)
cause
)

Constructs a new exception with the specified cause and a detail message of (cause==null ?

protected
Exception(String
the detail message.
message
,
Throwable
the cause. (A null value is permitted, and indicates that the cause is nonexistent or unknown.)
cause
,
boolean
whether or not suppression is enabled or disabled
enableSuppression
,
boolean
whether or not the stack trace should be writable
writableStackTrace
)

Constructs a new exception with the specified detail message, cause, suppression enabled or disabled, and writable stack trace enabled or disabled.

Method Summary

Inherited from java.lang.Throwable:
addSuppressedfillInStackTracegetCausegetLocalizedMessagegetMessagegetStackTracegetSuppressedinitCauseprintStackTraceprintStackTraceprintStackTracesetCausesetStackTracetoString

Field Detail

serialVersionUIDback to summary
pack-priv static final long serialVersionUID

Hides java.lang.Throwable.serialVersionUID.

Annotations
@Serial

Constructor Detail

Exceptionback to summary
public Exception()

Constructs a new exception with null as its detail message. The cause is not initialized, and may subsequently be initialized by a call to initCause.

Exceptionback to summary
public Exception(String message)

Constructs a new exception with the specified detail message. The cause is not initialized, and may subsequently be initialized by a call to initCause.

Parameters
message:String

the detail message. The detail message is saved for later retrieval by the getMessage() method.

Exceptionback to summary
public Exception(String message, Throwable cause)

Constructs a new exception with the specified detail message and cause.

Note that the detail message associated with cause is not automatically incorporated in this exception's detail message.

Parameters
message:String

the detail message (which is saved for later retrieval by the getMessage() method).

cause:Throwable

the cause (which is saved for later retrieval by the getCause() method). (A null value is permitted, and indicates that the cause is nonexistent or unknown.)

Since
1.4
Exceptionback to summary
public Exception(Throwable cause)

Constructs a new exception with the specified cause and a detail message of (cause==null ? null : cause.toString()) (which typically contains the class and detail message of cause). This constructor is useful for exceptions that are little more than wrappers for other throwables (for example, java.security.PrivilegedActionException).

Parameters
cause:Throwable

the cause (which is saved for later retrieval by the getCause() method). (A null value is permitted, and indicates that the cause is nonexistent or unknown.)

Since
1.4
Exceptionback to summary
protected Exception(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace)

Constructs a new exception with the specified detail message, cause, suppression enabled or disabled, and writable stack trace enabled or disabled.

Parameters
message:String

the detail message.

cause:Throwable

the cause. (A null value is permitted, and indicates that the cause is nonexistent or unknown.)

enableSuppression:boolean

whether or not suppression is enabled or disabled

writableStackTrace:boolean

whether or not the stack trace should be writable

Since
1.7