Error (Java SE 9 & JDK 9 ) (original) (raw)
- java.lang.Throwable
- java.lang.Error
All Implemented Interfaces:
[Serializable](../../java/io/Serializable.html "interface in java.io")
Direct Known Subclasses:[AnnotationFormatError](../../java/lang/annotation/AnnotationFormatError.html "class in java.lang.annotation"),[AssertionError](../../java/lang/AssertionError.html "class in java.lang"),[AWTError](../../java/awt/AWTError.html "class in java.awt"),[CoderMalfunctionError](../../java/nio/charset/CoderMalfunctionError.html "class in java.nio.charset"),[FactoryConfigurationError](../../javax/xml/parsers/FactoryConfigurationError.html "class in javax.xml.parsers"),[FactoryConfigurationError](../../javax/xml/stream/FactoryConfigurationError.html "class in javax.xml.stream"),[IOError](../../java/io/IOError.html "class in java.io"),[LinkageError](../../java/lang/LinkageError.html "class in java.lang"),[SchemaFactoryConfigurationError](../../javax/xml/validation/SchemaFactoryConfigurationError.html "class in javax.xml.validation"),[ServiceConfigurationError](../../java/util/ServiceConfigurationError.html "class in java.util"),[ThreadDeath](../../java/lang/ThreadDeath.html "class in java.lang"),[TransformerFactoryConfigurationError](../../javax/xml/transform/TransformerFactoryConfigurationError.html "class in javax.xml.transform"),[VirtualMachineError](../../java/lang/VirtualMachineError.html "class in java.lang")
public class Error
extends Throwable
An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch. Most such errors are abnormal conditions. The ThreadDeath error, though a "normal" condition, is also a subclass of Error because most applications should not try to catch it.
A method is not required to declare in its throws clause any subclasses of Error that might be thrown during the execution of the method but not caught, since these errors are abnormal conditions that should never occur. That is, Error and its subclasses are regarded as unchecked exceptions for the purposes of compile-time checking of exceptions.
Since:
1.0
See Also:
ThreadDeath, Serialized Form
See The Java™ Language Specification:
11.2 Compile-Time Checking of Exceptions
Constructor Summary
Constructors
Modifier Constructor Description Error() Constructs a new error with null as its detail message. Error(String message) Constructs a new error with the specified detail message. Error(String message,Throwable cause) Constructs a new error with the specified detail message and cause. protected Error(String message,Throwable cause, boolean enableSuppression, boolean writableStackTrace) Constructs a new error with the specified detail message, cause, suppression enabled or disabled, and writable stack trace enabled or disabled. Error(Throwable cause) Constructs a new error with the specified cause and a detail message of (cause==null ? null : cause.toString()) (which typically contains the class and detail message of cause). Method Summary
* ### Methods inherited from class java.lang.[Object](../../java/lang/Object.html "class in java.lang") `[clone](../../java/lang/Object.html#clone--), [equals](../../java/lang/Object.html#equals-java.lang.Object-), [finalize](../../java/lang/Object.html#finalize--), [getClass](../../java/lang/Object.html#getClass--), [hashCode](../../java/lang/Object.html#hashCode--), [notify](../../java/lang/Object.html#notify--), [notifyAll](../../java/lang/Object.html#notifyAll--), [wait](../../java/lang/Object.html#wait--), [wait](../../java/lang/Object.html#wait-long-), [wait](../../java/lang/Object.html#wait-long-int-)` * ### Methods inherited from class java.lang.[Throwable](../../java/lang/Throwable.html "class in java.lang") `[addSuppressed](../../java/lang/Throwable.html#addSuppressed-java.lang.Throwable-), [fillInStackTrace](../../java/lang/Throwable.html#fillInStackTrace--), [getCause](../../java/lang/Throwable.html#getCause--), [getLocalizedMessage](../../java/lang/Throwable.html#getLocalizedMessage--), [getMessage](../../java/lang/Throwable.html#getMessage--), [getStackTrace](../../java/lang/Throwable.html#getStackTrace--), [getSuppressed](../../java/lang/Throwable.html#getSuppressed--), [initCause](../../java/lang/Throwable.html#initCause-java.lang.Throwable-), [printStackTrace](../../java/lang/Throwable.html#printStackTrace--), [printStackTrace](../../java/lang/Throwable.html#printStackTrace-java.io.PrintStream-), [printStackTrace](../../java/lang/Throwable.html#printStackTrace-java.io.PrintWriter-), [setStackTrace](../../java/lang/Throwable.html#setStackTrace-java.lang.StackTraceElement:A-), [toString](../../java/lang/Throwable.html#toString--)`
Constructor Detail
* #### Error public Error() Constructs a new error with `null` as its detail message. The cause is not initialized, and may subsequently be initialized by a call to [Throwable.initCause(java.lang.Throwable)](../../java/lang/Throwable.html#initCause-java.lang.Throwable-). * #### Error public Error([String](../../java/lang/String.html "class in java.lang") message) Constructs a new error with the specified detail message. The cause is not initialized, and may subsequently be initialized by a call to [Throwable.initCause(java.lang.Throwable)](../../java/lang/Throwable.html#initCause-java.lang.Throwable-). Parameters: `message` \- the detail message. The detail message is saved for later retrieval by the [Throwable.getMessage()](../../java/lang/Throwable.html#getMessage--) method. * #### Error public Error([String](../../java/lang/String.html "class in java.lang") message, [Throwable](../../java/lang/Throwable.html "class in java.lang") cause) Constructs a new error with the specified detail message and cause. Note that the detail message associated with`cause` is _not_ automatically incorporated in this error's detail message. Parameters: `message` \- the detail message (which is saved for later retrieval by the [Throwable.getMessage()](../../java/lang/Throwable.html#getMessage--) method). `cause` \- the cause (which is saved for later retrieval by the[Throwable.getCause()](../../java/lang/Throwable.html#getCause--) method). (A `null` value is permitted, and indicates that the cause is nonexistent or unknown.) Since: 1.4 * #### Error public Error([Throwable](../../java/lang/Throwable.html "class in java.lang") cause) Constructs a new error 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 errors that are little more than wrappers for other throwables. Parameters: `cause` \- the cause (which is saved for later retrieval by the[Throwable.getCause()](../../java/lang/Throwable.html#getCause--) method). (A `null` value is permitted, and indicates that the cause is nonexistent or unknown.) Since: 1.4 * #### Error protected Error([String](../../java/lang/String.html "class in java.lang") message, [Throwable](../../java/lang/Throwable.html "class in java.lang") cause, boolean enableSuppression, boolean writableStackTrace) Constructs a new error with the specified detail message, cause, suppression enabled or disabled, and writable stack trace enabled or disabled. Parameters: `message` \- the detail message. `cause` \- the cause. (A `null` value is permitted, and indicates that the cause is nonexistent or unknown.) `enableSuppression` \- whether or not suppression is enabled or disabled `writableStackTrace` \- whether or not the stack trace should be writable Since: 1.7
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